/****************************************************************************** ** Filename: intproto.c ** Purpose: Definition of data structures for integer protos. ** Author: Dan Johnson ** History: Thu Feb 7 14:38:16 1991, DSJ, Created. ** ** (c) Copyright Hewlett-Packard Company, 1988. ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** http://www.apache.org/licenses/LICENSE-2.0 ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. ******************************************************************************/ /*----------------------------------------------------------------------------- Include Files and Type Defines -----------------------------------------------------------------------------*/ #include #include #include #ifdef __UNIX__ #include #endif #include "classify.h" #include "const.h" #include "emalloc.h" #include "fontinfo.h" #include "genericvector.h" #include "globals.h" #include "helpers.h" #include "intproto.h" #include "mfoutline.h" #include "ndminx.h" #include "picofeat.h" #include "shapetable.h" #include "svmnode.h" // Include automatically generated configuration file if running autoconf. #ifdef HAVE_CONFIG_H #include "config_auto.h" #endif using tesseract::FontInfo; using tesseract::FontSet; using tesseract::FontSpacingInfo; /* match debug display constants*/ #define PROTO_PRUNER_SCALE (4.0) #define INT_DESCENDER (0.0 * INT_CHAR_NORM_RANGE) #define INT_BASELINE (0.25 * INT_CHAR_NORM_RANGE) #define INT_XHEIGHT (0.75 * INT_CHAR_NORM_RANGE) #define INT_CAPHEIGHT (1.0 * INT_CHAR_NORM_RANGE) #define INT_XCENTER (0.5 * INT_CHAR_NORM_RANGE) #define INT_YCENTER (0.5 * INT_CHAR_NORM_RANGE) #define INT_XRADIUS (0.2 * INT_CHAR_NORM_RANGE) #define INT_YRADIUS (0.2 * INT_CHAR_NORM_RANGE) #define INT_MIN_X 0 #define INT_MIN_Y 0 #define INT_MAX_X INT_CHAR_NORM_RANGE #define INT_MAX_Y INT_CHAR_NORM_RANGE /** define pad used to snap near horiz/vertical protos to horiz/vertical */ #define HV_TOLERANCE (0.0025) /* approx 0.9 degrees */ typedef enum { StartSwitch, EndSwitch, LastSwitch } SWITCH_TYPE; #define MAX_NUM_SWITCHES 3 typedef struct { SWITCH_TYPE Type; inT8 X, Y; inT16 YInit; inT16 Delta; } FILL_SWITCH; typedef struct { uinT8 NextSwitch; uinT8 AngleStart, AngleEnd; inT8 X; inT16 YStart, YEnd; inT16 StartDelta, EndDelta; FILL_SWITCH Switch[MAX_NUM_SWITCHES]; } TABLE_FILLER; typedef struct { inT8 X; inT8 YStart, YEnd; uinT8 AngleStart, AngleEnd; } FILL_SPEC; /* constants for conversion from old inttemp format */ #define OLD_MAX_NUM_CONFIGS 32 #define OLD_WERDS_PER_CONFIG_VEC ((OLD_MAX_NUM_CONFIGS + BITS_PER_WERD - 1) /\ BITS_PER_WERD) /*----------------------------------------------------------------------------- Macros -----------------------------------------------------------------------------*/ /** macro for performing circular increments of bucket indices */ #define CircularIncrement(i,r) (((i) < (r) - 1)?((i)++):((i) = 0)) /** macro for mapping floats to ints without bounds checking */ #define MapParam(P,O,N) (floor (((P) + (O)) * (N))) /*--------------------------------------------------------------------------- Private Function Prototypes ----------------------------------------------------------------------------*/ FLOAT32 BucketStart(int Bucket, FLOAT32 Offset, int NumBuckets); FLOAT32 BucketEnd(int Bucket, FLOAT32 Offset, int NumBuckets); void DoFill(FILL_SPEC *FillSpec, CLASS_PRUNER_STRUCT* Pruner, register uinT32 ClassMask, register uinT32 ClassCount, register uinT32 WordIndex); BOOL8 FillerDone(TABLE_FILLER *Filler); void FillPPCircularBits(uinT32 ParamTable[NUM_PP_BUCKETS][WERDS_PER_PP_VECTOR], int Bit, FLOAT32 Center, FLOAT32 Spread, bool debug); void FillPPLinearBits(uinT32 ParamTable[NUM_PP_BUCKETS][WERDS_PER_PP_VECTOR], int Bit, FLOAT32 Center, FLOAT32 Spread, bool debug); void GetCPPadsForLevel(int Level, FLOAT32 *EndPad, FLOAT32 *SidePad, FLOAT32 *AnglePad); ScrollView::Color GetMatchColorFor(FLOAT32 Evidence); void GetNextFill(TABLE_FILLER *Filler, FILL_SPEC *Fill); void InitTableFiller(FLOAT32 EndPad, FLOAT32 SidePad, FLOAT32 AnglePad, PROTO Proto, TABLE_FILLER *Filler); #ifndef GRAPHICS_DISABLED void RenderIntFeature(ScrollView *window, const INT_FEATURE_STRUCT* Feature, ScrollView::Color color); void RenderIntProto(ScrollView *window, INT_CLASS Class, PROTO_ID ProtoId, ScrollView::Color color); #endif // GRAPHICS_DISABLED int TruncateParam(FLOAT32 Param, int Min, int Max, char *Id); /*----------------------------------------------------------------------------- Global Data Definitions and Declarations -----------------------------------------------------------------------------*/ /* global display lists used to display proto and feature match information*/ ScrollView *IntMatchWindow = NULL; ScrollView *FeatureDisplayWindow = NULL; ScrollView *ProtoDisplayWindow = NULL; /*----------------------------------------------------------------------------- Variables -----------------------------------------------------------------------------*/ /* control knobs */ INT_VAR(classify_num_cp_levels, 3, "Number of Class Pruner Levels"); double_VAR(classify_cp_angle_pad_loose, 45.0, "Class Pruner Angle Pad Loose"); double_VAR(classify_cp_angle_pad_medium, 20.0, "Class Pruner Angle Pad Medium"); double_VAR(classify_cp_angle_pad_tight, 10.0, "CLass Pruner Angle Pad Tight"); double_VAR(classify_cp_end_pad_loose, 0.5, "Class Pruner End Pad Loose"); double_VAR(classify_cp_end_pad_medium, 0.5, "Class Pruner End Pad Medium"); double_VAR(classify_cp_end_pad_tight, 0.5, "Class Pruner End Pad Tight"); double_VAR(classify_cp_side_pad_loose, 2.5, "Class Pruner Side Pad Loose"); double_VAR(classify_cp_side_pad_medium, 1.2, "Class Pruner Side Pad Medium"); double_VAR(classify_cp_side_pad_tight, 0.6, "Class Pruner Side Pad Tight"); double_VAR(classify_pp_angle_pad, 45.0, "Proto Pruner Angle Pad"); double_VAR(classify_pp_end_pad, 0.5, "Proto Prune End Pad"); double_VAR(classify_pp_side_pad, 2.5, "Proto Pruner Side Pad"); /*----------------------------------------------------------------------------- Public Code -----------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/ /** * This routine adds a new class structure to a set of * templates. Classes have to be added to Templates in * the order of increasing ClassIds. * * @param Templates templates to add new class to * @param ClassId class id to associate new class with * @param Class class data structure to add to templates * * Globals: none * * @note Exceptions: none * @note History: Mon Feb 11 11:52:08 1991, DSJ, Created. */ void AddIntClass(INT_TEMPLATES Templates, CLASS_ID ClassId, INT_CLASS Class) { int Pruner; assert (LegalClassId (ClassId)); if (ClassId != Templates->NumClasses) { fprintf(stderr, "Please make sure that classes are added to templates"); fprintf(stderr, " in increasing order of ClassIds\n"); exit(1); } ClassForClassId (Templates, ClassId) = Class; Templates->NumClasses++; if (Templates->NumClasses > MaxNumClassesIn (Templates)) { Pruner = Templates->NumClassPruners++; Templates->ClassPruners[Pruner] = new CLASS_PRUNER_STRUCT; memset(Templates->ClassPruners[Pruner], 0, sizeof(CLASS_PRUNER_STRUCT)); } } /* AddIntClass */ /*---------------------------------------------------------------------------*/ /** * This routine returns the index of the next free config * in Class. * * @param Class class to add new configuration to * * Globals: none * * @return Index of next free config. * @note Exceptions: none * @note History: Mon Feb 11 14:44:40 1991, DSJ, Created. */ int AddIntConfig(INT_CLASS Class) { int Index; assert(Class->NumConfigs < MAX_NUM_CONFIGS); Index = Class->NumConfigs++; Class->ConfigLengths[Index] = 0; return Index; } /* AddIntConfig */ /*---------------------------------------------------------------------------*/ /** * This routine allocates the next free proto in Class and * returns its index. * * @param Class class to add new proto to * * Globals: none * * @return Proto index of new proto. * @note Exceptions: none * @note History: Mon Feb 11 13:26:41 1991, DSJ, Created. */ int AddIntProto(INT_CLASS Class) { int Index; int ProtoSetId; PROTO_SET ProtoSet; INT_PROTO Proto; register uinT32 *Word; if (Class->NumProtos >= MAX_NUM_PROTOS) return (NO_PROTO); Index = Class->NumProtos++; if (Class->NumProtos > MaxNumIntProtosIn(Class)) { ProtoSetId = Class->NumProtoSets++; ProtoSet = (PROTO_SET) Emalloc(sizeof(PROTO_SET_STRUCT)); Class->ProtoSets[ProtoSetId] = ProtoSet; memset(ProtoSet, 0, sizeof(*ProtoSet)); /* reallocate space for the proto lengths and install in class */ Class->ProtoLengths = (uinT8 *)Erealloc(Class->ProtoLengths, MaxNumIntProtosIn(Class) * sizeof(uinT8)); memset(&Class->ProtoLengths[Index], 0, sizeof(*Class->ProtoLengths) * (MaxNumIntProtosIn(Class) - Index)); } /* initialize proto so its length is zero and it isn't in any configs */ Class->ProtoLengths[Index] = 0; Proto = ProtoForProtoId (Class, Index); for (Word = Proto->Configs; Word < Proto->Configs + WERDS_PER_CONFIG_VEC; *Word++ = 0); return (Index); } /* AddIntProto */ /*---------------------------------------------------------------------------*/ void AddProtoToClassPruner (PROTO Proto, CLASS_ID ClassId, INT_TEMPLATES Templates) /* ** Parameters: ** Proto floating-pt proto to add to class pruner ** ClassId class id corresponding to Proto ** Templates set of templates containing class pruner ** Globals: ** classify_num_cp_levels number of levels used in the class pruner ** Operation: This routine adds Proto to the class pruning tables ** for the specified class in Templates. ** Return: none ** Exceptions: none ** History: Wed Feb 13 08:49:54 1991, DSJ, Created. */ #define MAX_LEVEL 2 { CLASS_PRUNER_STRUCT* Pruner; uinT32 ClassMask; uinT32 ClassCount; uinT32 WordIndex; int Level; FLOAT32 EndPad, SidePad, AnglePad; TABLE_FILLER TableFiller; FILL_SPEC FillSpec; Pruner = CPrunerFor (Templates, ClassId); WordIndex = CPrunerWordIndexFor (ClassId); ClassMask = CPrunerMaskFor (MAX_LEVEL, ClassId); for (Level = classify_num_cp_levels - 1; Level >= 0; Level--) { GetCPPadsForLevel(Level, &EndPad, &SidePad, &AnglePad); ClassCount = CPrunerMaskFor (Level, ClassId); InitTableFiller(EndPad, SidePad, AnglePad, Proto, &TableFiller); while (!FillerDone (&TableFiller)) { GetNextFill(&TableFiller, &FillSpec); DoFill(&FillSpec, Pruner, ClassMask, ClassCount, WordIndex); } } } /* AddProtoToClassPruner */ /*---------------------------------------------------------------------------*/ void AddProtoToProtoPruner(PROTO Proto, int ProtoId, INT_CLASS Class, bool debug) { /* ** Parameters: ** Proto floating-pt proto to be added to proto pruner ** ProtoId id of proto ** Class integer class that contains desired proto pruner ** Globals: none ** Operation: This routine updates the proto pruner lookup tables ** for Class to include a new proto identified by ProtoId ** and described by Proto. ** Return: none ** Exceptions: none ** History: Fri Feb 8 13:07:19 1991, DSJ, Created. */ FLOAT32 Angle, X, Y, Length; FLOAT32 Pad; int Index; PROTO_SET ProtoSet; if (ProtoId >= Class->NumProtos) cprintf("AddProtoToProtoPruner:assert failed: %d < %d", ProtoId, Class->NumProtos); assert(ProtoId < Class->NumProtos); Index = IndexForProto (ProtoId); ProtoSet = Class->ProtoSets[SetForProto (ProtoId)]; Angle = Proto->Angle; #ifndef _WIN32 assert(!isnan(Angle)); #endif FillPPCircularBits (ProtoSet->ProtoPruner[PRUNER_ANGLE], Index, Angle + ANGLE_SHIFT, classify_pp_angle_pad / 360.0, debug); Angle *= 2.0 * PI; Length = Proto->Length; X = Proto->X + X_SHIFT; Pad = MAX (fabs (cos (Angle)) * (Length / 2.0 + classify_pp_end_pad * GetPicoFeatureLength ()), fabs (sin (Angle)) * (classify_pp_side_pad * GetPicoFeatureLength ())); FillPPLinearBits(ProtoSet->ProtoPruner[PRUNER_X], Index, X, Pad, debug); Y = Proto->Y + Y_SHIFT; Pad = MAX (fabs (sin (Angle)) * (Length / 2.0 + classify_pp_end_pad * GetPicoFeatureLength ()), fabs (cos (Angle)) * (classify_pp_side_pad * GetPicoFeatureLength ())); FillPPLinearBits(ProtoSet->ProtoPruner[PRUNER_Y], Index, Y, Pad, debug); } /* AddProtoToProtoPruner */ /*---------------------------------------------------------------------------*/ int BucketFor(FLOAT32 Param, FLOAT32 Offset, int NumBuckets) { /* ** Parameters: ** Param parameter value to map into a bucket number ** Offset amount to shift param before mapping it ** NumBuckets number of buckets to map param into ** Globals: none ** Operation: This routine maps a parameter value into a bucket between ** 0 and NumBuckets-1. Offset is added to the parameter ** before mapping it. Values which map to buckets outside ** the range are truncated to fit within the range. Mapping ** is done by truncating rather than rounding. ** Return: Bucket number corresponding to Param + Offset. ** Exceptions: none ** History: Thu Feb 14 13:24:33 1991, DSJ, Created. */ return ClipToRange(static_cast(MapParam(Param, Offset, NumBuckets)), 0, NumBuckets - 1); } /* BucketFor */ /*---------------------------------------------------------------------------*/ int CircBucketFor(FLOAT32 Param, FLOAT32 Offset, int NumBuckets) { /* ** Parameters: ** Param parameter value to map into a circular bucket ** Offset amount to shift param before mapping it ** NumBuckets number of buckets to map param into ** Globals: none ** Operation: This routine maps a parameter value into a bucket between ** 0 and NumBuckets-1. Offset is added to the parameter ** before mapping it. Values which map to buckets outside ** the range are wrapped to a new value in a circular fashion. ** Mapping is done by truncating rather than rounding. ** Return: Bucket number corresponding to Param + Offset. ** Exceptions: none ** History: Thu Feb 14 13:24:33 1991, DSJ, Created. */ int Bucket; Bucket = static_cast(MapParam(Param, Offset, NumBuckets)); if (Bucket < 0) Bucket += NumBuckets; else if (Bucket >= NumBuckets) Bucket -= NumBuckets; return Bucket; } /* CircBucketFor */ /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED void UpdateMatchDisplay() { /* ** Parameters: none ** Globals: ** FeatureShapes display list for features ** ProtoShapes display list for protos ** Operation: This routine clears the global feature and proto ** display lists. ** Return: none ** Exceptions: none ** History: Thu Mar 21 15:40:19 1991, DSJ, Created. */ if (IntMatchWindow != NULL) IntMatchWindow->Update(); } /* ClearMatchDisplay */ #endif /*---------------------------------------------------------------------------*/ void ConvertConfig(BIT_VECTOR Config, int ConfigId, INT_CLASS Class) { /* ** Parameters: ** Config config to be added to class ** ConfigId id to be used for new config ** Class class to add new config to ** Globals: none ** Operation: This operation updates the config vectors of all protos ** in Class to indicate that the protos with 1's in Config ** belong to a new configuration identified by ConfigId. ** It is assumed that the length of the Config bit vector is ** equal to the number of protos in Class. ** Return: none ** Exceptions: none ** History: Mon Feb 11 14:57:31 1991, DSJ, Created. */ int ProtoId; INT_PROTO Proto; int TotalLength; for (ProtoId = 0, TotalLength = 0; ProtoId < Class->NumProtos; ProtoId++) { if (test_bit(Config, ProtoId)) { Proto = ProtoForProtoId(Class, ProtoId); SET_BIT(Proto->Configs, ConfigId); TotalLength += Class->ProtoLengths[ProtoId]; } } Class->ConfigLengths[ConfigId] = TotalLength; } /* ConvertConfig */ namespace tesseract { /*---------------------------------------------------------------------------*/ void Classify::ConvertProto(PROTO Proto, int ProtoId, INT_CLASS Class) { /* ** Parameters: ** Proto floating-pt proto to be converted to integer format ** ProtoId id of proto ** Class integer class to add converted proto to ** Globals: none ** Operation: This routine converts Proto to integer format and ** installs it as ProtoId in Class. ** Return: none ** Exceptions: none ** History: Fri Feb 8 11:22:43 1991, DSJ, Created. */ INT_PROTO P; FLOAT32 Param; assert(ProtoId < Class->NumProtos); P = ProtoForProtoId(Class, ProtoId); Param = Proto->A * 128; P->A = TruncateParam(Param, -128, 127, NULL); Param = -Proto->B * 256; P->B = TruncateParam(Param, 0, 255, NULL); Param = Proto->C * 128; P->C = TruncateParam(Param, -128, 127, NULL); Param = Proto->Angle * 256; if (Param < 0 || Param >= 256) P->Angle = 0; else P->Angle = (uinT8) Param; /* round proto length to nearest integer number of pico-features */ Param = (Proto->Length / GetPicoFeatureLength()) + 0.5; Class->ProtoLengths[ProtoId] = TruncateParam(Param, 1, 255, NULL); if (classify_learning_debug_level >= 2) cprintf("Converted ffeat to (A=%d,B=%d,C=%d,L=%d)", P->A, P->B, P->C, Class->ProtoLengths[ProtoId]); } /* ConvertProto */ /*---------------------------------------------------------------------------*/ INT_TEMPLATES Classify::CreateIntTemplates(CLASSES FloatProtos, const UNICHARSET& target_unicharset) { /* ** Parameters: ** FloatProtos prototypes in old floating pt format ** Globals: none ** Operation: This routine converts from the old floating point format ** to the new integer format. ** Return: New set of training templates in integer format. ** Exceptions: none ** History: Thu Feb 7 14:40:42 1991, DSJ, Created. */ INT_TEMPLATES IntTemplates; CLASS_TYPE FClass; INT_CLASS IClass; int ClassId; int ProtoId; int ConfigId; IntTemplates = NewIntTemplates(); for (ClassId = 0; ClassId < target_unicharset.size(); ClassId++) { FClass = &(FloatProtos[ClassId]); if (FClass->NumProtos == 0 && FClass->NumConfigs == 0 && strcmp(target_unicharset.id_to_unichar(ClassId), " ") != 0) { cprintf("Warning: no protos/configs for %s in CreateIntTemplates()\n", target_unicharset.id_to_unichar(ClassId)); } assert(UnusedClassIdIn(IntTemplates, ClassId)); IClass = NewIntClass(FClass->NumProtos, FClass->NumConfigs); FontSet fs; fs.size = FClass->font_set.size(); fs.configs = new int[fs.size]; for (int i = 0; i < fs.size; ++i) { fs.configs[i] = FClass->font_set.get(i); } if (this->fontset_table_.contains(fs)) { IClass->font_set_id = this->fontset_table_.get_id(fs); delete[] fs.configs; } else { IClass->font_set_id = this->fontset_table_.push_back(fs); } AddIntClass(IntTemplates, ClassId, IClass); for (ProtoId = 0; ProtoId < FClass->NumProtos; ProtoId++) { AddIntProto(IClass); ConvertProto(ProtoIn(FClass, ProtoId), ProtoId, IClass); AddProtoToProtoPruner(ProtoIn(FClass, ProtoId), ProtoId, IClass, classify_learning_debug_level >= 2); AddProtoToClassPruner(ProtoIn(FClass, ProtoId), ClassId, IntTemplates); } for (ConfigId = 0; ConfigId < FClass->NumConfigs; ConfigId++) { AddIntConfig(IClass); ConvertConfig(FClass->Configurations[ConfigId], ConfigId, IClass); } } return (IntTemplates); } /* CreateIntTemplates */ } // namespace tesseract /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED void DisplayIntFeature(const INT_FEATURE_STRUCT* Feature, FLOAT32 Evidence) { /* ** Parameters: ** Feature pico-feature to be displayed ** Evidence best evidence for this feature (0-1) ** Globals: ** FeatureShapes global display list for features ** Operation: This routine renders the specified feature into a ** global display list. ** Return: none ** Exceptions: none ** History: Thu Mar 21 14:45:04 1991, DSJ, Created. */ ScrollView::Color color = GetMatchColorFor(Evidence); RenderIntFeature(IntMatchWindow, Feature, color); if (FeatureDisplayWindow) { RenderIntFeature(FeatureDisplayWindow, Feature, color); } } /* DisplayIntFeature */ /*---------------------------------------------------------------------------*/ void DisplayIntProto(INT_CLASS Class, PROTO_ID ProtoId, FLOAT32 Evidence) { /* ** Parameters: ** Class class to take proto from ** ProtoId id of proto in Class to be displayed ** Evidence total evidence for proto (0-1) ** Globals: ** ProtoShapes global display list for protos ** Operation: This routine renders the specified proto into a ** global display list. ** Return: none ** Exceptions: none ** History: Thu Mar 21 14:45:04 1991, DSJ, Created. */ ScrollView::Color color = GetMatchColorFor(Evidence); RenderIntProto(IntMatchWindow, Class, ProtoId, color); if (ProtoDisplayWindow) { RenderIntProto(ProtoDisplayWindow, Class, ProtoId, color); } } /* DisplayIntProto */ #endif /*---------------------------------------------------------------------------*/ INT_CLASS NewIntClass(int MaxNumProtos, int MaxNumConfigs) { /* ** Parameters: ** MaxNumProtos number of protos to allocate space for ** MaxNumConfigs number of configs to allocate space for ** Globals: none ** Operation: This routine creates a new integer class data structure ** and returns it. Sufficient space is allocated ** to handle the specified number of protos and configs. ** Return: New class created. ** Exceptions: none ** History: Fri Feb 8 10:51:23 1991, DSJ, Created. */ INT_CLASS Class; PROTO_SET ProtoSet; int i; assert(MaxNumConfigs <= MAX_NUM_CONFIGS); Class = (INT_CLASS) Emalloc(sizeof(INT_CLASS_STRUCT)); Class->NumProtoSets = ((MaxNumProtos + PROTOS_PER_PROTO_SET - 1) / PROTOS_PER_PROTO_SET); assert(Class->NumProtoSets <= MAX_NUM_PROTO_SETS); Class->NumProtos = 0; Class->NumConfigs = 0; for (i = 0; i < Class->NumProtoSets; i++) { /* allocate space for a proto set, install in class, and initialize */ ProtoSet = (PROTO_SET) Emalloc(sizeof(PROTO_SET_STRUCT)); memset(ProtoSet, 0, sizeof(*ProtoSet)); Class->ProtoSets[i] = ProtoSet; /* allocate space for the proto lengths and install in class */ } if (MaxNumIntProtosIn (Class) > 0) { Class->ProtoLengths = (uinT8 *)Emalloc(MaxNumIntProtosIn (Class) * sizeof (uinT8)); memset(Class->ProtoLengths, 0, MaxNumIntProtosIn(Class) * sizeof(*Class->ProtoLengths)); } else { Class->ProtoLengths = NULL; } memset(Class->ConfigLengths, 0, sizeof(Class->ConfigLengths)); return (Class); } /* NewIntClass */ /*-------------------------------------------------------------------------*/ void free_int_class(INT_CLASS int_class) { int i; for (i = 0; i < int_class->NumProtoSets; i++) { Efree (int_class->ProtoSets[i]); } if (int_class->ProtoLengths != NULL) { Efree (int_class->ProtoLengths); } Efree(int_class); } /*---------------------------------------------------------------------------*/ INT_TEMPLATES NewIntTemplates() { /* ** Parameters: none ** Globals: none ** Operation: This routine allocates a new set of integer templates ** initialized to hold 0 classes. ** Return: The integer templates created. ** Exceptions: none ** History: Fri Feb 8 08:38:51 1991, DSJ, Created. */ INT_TEMPLATES T; int i; T = (INT_TEMPLATES) Emalloc (sizeof (INT_TEMPLATES_STRUCT)); T->NumClasses = 0; T->NumClassPruners = 0; for (i = 0; i < MAX_NUM_CLASSES; i++) ClassForClassId (T, i) = NULL; return (T); } /* NewIntTemplates */ /*---------------------------------------------------------------------------*/ void free_int_templates(INT_TEMPLATES templates) { int i; for (i = 0; i < templates->NumClasses; i++) free_int_class(templates->Class[i]); for (i = 0; i < templates->NumClassPruners; i++) delete templates->ClassPruners[i]; Efree(templates); } namespace tesseract { INT_TEMPLATES Classify::ReadIntTemplates(FILE *File) { /* ** Parameters: ** File open file to read templates from ** Globals: none ** Operation: This routine reads a set of integer templates from ** File. File must already be open and must be in the ** correct binary format. ** Return: Pointer to integer templates read from File. ** Exceptions: none ** History: Wed Feb 27 11:48:46 1991, DSJ, Created. */ int i, j, w, x, y, z; BOOL8 swap; int nread; int unicharset_size; int version_id = 0; INT_TEMPLATES Templates; CLASS_PRUNER_STRUCT* Pruner; INT_CLASS Class; uinT8 *Lengths; PROTO_SET ProtoSet; /* variables for conversion from older inttemp formats */ int b, bit_number, last_cp_bit_number, new_b, new_i, new_w; CLASS_ID class_id, max_class_id; inT16 *IndexFor = new inT16[MAX_NUM_CLASSES]; CLASS_ID *ClassIdFor = new CLASS_ID[MAX_NUM_CLASSES]; CLASS_PRUNER_STRUCT **TempClassPruner = new CLASS_PRUNER_STRUCT*[MAX_NUM_CLASS_PRUNERS]; uinT32 SetBitsForMask = // word with NUM_BITS_PER_CLASS (1 << NUM_BITS_PER_CLASS) - 1; // set starting at bit 0 uinT32 Mask, NewMask, ClassBits; int MaxNumConfigs = MAX_NUM_CONFIGS; int WerdsPerConfigVec = WERDS_PER_CONFIG_VEC; /* first read the high level template struct */ Templates = NewIntTemplates(); // Read Templates in parts for 64 bit compatibility. if (fread(&unicharset_size, sizeof(int), 1, File) != 1) cprintf("Bad read of inttemp!\n"); if (fread(&Templates->NumClasses, sizeof(Templates->NumClasses), 1, File) != 1 || fread(&Templates->NumClassPruners, sizeof(Templates->NumClassPruners), 1, File) != 1) cprintf("Bad read of inttemp!\n"); // Swap status is determined automatically. swap = Templates->NumClassPruners < 0 || Templates->NumClassPruners > MAX_NUM_CLASS_PRUNERS; if (swap) { Reverse32(&Templates->NumClassPruners); Reverse32(&Templates->NumClasses); Reverse32(&unicharset_size); } if (Templates->NumClasses < 0) { // This file has a version id! version_id = -Templates->NumClasses; if (fread(&Templates->NumClasses, sizeof(Templates->NumClasses), 1, File) != 1) cprintf("Bad read of inttemp!\n"); if (swap) Reverse32(&Templates->NumClasses); } if (version_id < 3) { MaxNumConfigs = OLD_MAX_NUM_CONFIGS; WerdsPerConfigVec = OLD_WERDS_PER_CONFIG_VEC; } if (version_id < 2) { for (i = 0; i < unicharset_size; ++i) { if (fread(&IndexFor[i], sizeof(inT16), 1, File) != 1) cprintf("Bad read of inttemp!\n"); } for (i = 0; i < Templates->NumClasses; ++i) { if (fread(&ClassIdFor[i], sizeof(CLASS_ID), 1, File) != 1) cprintf("Bad read of inttemp!\n"); } if (swap) { for (i = 0; i < Templates->NumClasses; i++) Reverse16(&IndexFor[i]); for (i = 0; i < Templates->NumClasses; i++) Reverse32(&ClassIdFor[i]); } } /* then read in the class pruners */ for (i = 0; i < Templates->NumClassPruners; i++) { Pruner = new CLASS_PRUNER_STRUCT; if ((nread = fread(Pruner, 1, sizeof(CLASS_PRUNER_STRUCT), File)) != sizeof(CLASS_PRUNER_STRUCT)) cprintf("Bad read of inttemp!\n"); if (swap) { for (x = 0; x < NUM_CP_BUCKETS; x++) { for (y = 0; y < NUM_CP_BUCKETS; y++) { for (z = 0; z < NUM_CP_BUCKETS; z++) { for (w = 0; w < WERDS_PER_CP_VECTOR; w++) { Reverse32(&Pruner->p[x][y][z][w]); } } } } } if (version_id < 2) { TempClassPruner[i] = Pruner; } else { Templates->ClassPruners[i] = Pruner; } } /* fix class pruners if they came from an old version of inttemp */ if (version_id < 2) { // Allocate enough class pruners to cover all the class ids. max_class_id = 0; for (i = 0; i < Templates->NumClasses; i++) if (ClassIdFor[i] > max_class_id) max_class_id = ClassIdFor[i]; for (i = 0; i <= CPrunerIdFor(max_class_id); i++) { Templates->ClassPruners[i] = new CLASS_PRUNER_STRUCT; memset(Templates->ClassPruners[i], 0, sizeof(CLASS_PRUNER_STRUCT)); } // Convert class pruners from the old format (indexed by class index) // to the new format (indexed by class id). last_cp_bit_number = NUM_BITS_PER_CLASS * Templates->NumClasses - 1; for (i = 0; i < Templates->NumClassPruners; i++) { for (x = 0; x < NUM_CP_BUCKETS; x++) for (y = 0; y < NUM_CP_BUCKETS; y++) for (z = 0; z < NUM_CP_BUCKETS; z++) for (w = 0; w < WERDS_PER_CP_VECTOR; w++) { if (TempClassPruner[i]->p[x][y][z][w] == 0) continue; for (b = 0; b < BITS_PER_WERD; b += NUM_BITS_PER_CLASS) { bit_number = i * BITS_PER_CP_VECTOR + w * BITS_PER_WERD + b; if (bit_number > last_cp_bit_number) break; // the rest of the bits in this word are not used class_id = ClassIdFor[bit_number / NUM_BITS_PER_CLASS]; // Single out NUM_BITS_PER_CLASS bits relating to class_id. Mask = SetBitsForMask << b; ClassBits = TempClassPruner[i]->p[x][y][z][w] & Mask; // Move these bits to the new position in which they should // appear (indexed corresponding to the class_id). new_i = CPrunerIdFor(class_id); new_w = CPrunerWordIndexFor(class_id); new_b = CPrunerBitIndexFor(class_id) * NUM_BITS_PER_CLASS; if (new_b > b) { ClassBits <<= (new_b - b); } else { ClassBits >>= (b - new_b); } // Copy bits relating to class_id to the correct position // in Templates->ClassPruner. NewMask = SetBitsForMask << new_b; Templates->ClassPruners[new_i]->p[x][y][z][new_w] &= ~NewMask; Templates->ClassPruners[new_i]->p[x][y][z][new_w] |= ClassBits; } } } for (i = 0; i < Templates->NumClassPruners; i++) { delete TempClassPruner[i]; } } /* then read in each class */ for (i = 0; i < Templates->NumClasses; i++) { /* first read in the high level struct for the class */ Class = (INT_CLASS) Emalloc (sizeof (INT_CLASS_STRUCT)); if (fread(&Class->NumProtos, sizeof(Class->NumProtos), 1, File) != 1 || fread(&Class->NumProtoSets, sizeof(Class->NumProtoSets), 1, File) != 1 || fread(&Class->NumConfigs, sizeof(Class->NumConfigs), 1, File) != 1) cprintf ("Bad read of inttemp!\n"); if (version_id == 0) { // Only version 0 writes 5 pointless pointers to the file. for (j = 0; j < 5; ++j) { int junk; if (fread(&junk, sizeof(junk), 1, File) != 1) cprintf ("Bad read of inttemp!\n"); } } if (version_id < 4) { for (j = 0; j < MaxNumConfigs; ++j) { if (fread(&Class->ConfigLengths[j], sizeof(uinT16), 1, File) != 1) cprintf ("Bad read of inttemp!\n"); } if (swap) { Reverse16(&Class->NumProtos); for (j = 0; j < MaxNumConfigs; j++) Reverse16(&Class->ConfigLengths[j]); } } else { ASSERT_HOST(Class->NumConfigs < MaxNumConfigs); for (j = 0; j < Class->NumConfigs; ++j) { if (fread(&Class->ConfigLengths[j], sizeof(uinT16), 1, File) != 1) cprintf ("Bad read of inttemp!\n"); } if (swap) { Reverse16(&Class->NumProtos); for (j = 0; j < MaxNumConfigs; j++) Reverse16(&Class->ConfigLengths[j]); } } if (version_id < 2) { ClassForClassId (Templates, ClassIdFor[i]) = Class; } else { ClassForClassId (Templates, i) = Class; } /* then read in the proto lengths */ Lengths = NULL; if (MaxNumIntProtosIn (Class) > 0) { Lengths = (uinT8 *)Emalloc(sizeof(uinT8) * MaxNumIntProtosIn(Class)); if ((nread = fread((char *)Lengths, sizeof(uinT8), MaxNumIntProtosIn(Class), File)) != MaxNumIntProtosIn (Class)) cprintf ("Bad read of inttemp!\n"); } Class->ProtoLengths = Lengths; /* then read in the proto sets */ for (j = 0; j < Class->NumProtoSets; j++) { ProtoSet = (PROTO_SET)Emalloc(sizeof(PROTO_SET_STRUCT)); if (version_id < 3) { if ((nread = fread((char *) &ProtoSet->ProtoPruner, 1, sizeof(PROTO_PRUNER), File)) != sizeof(PROTO_PRUNER)) cprintf("Bad read of inttemp!\n"); for (x = 0; x < PROTOS_PER_PROTO_SET; x++) { if ((nread = fread((char *) &ProtoSet->Protos[x].A, 1, sizeof(inT8), File)) != sizeof(inT8) || (nread = fread((char *) &ProtoSet->Protos[x].B, 1, sizeof(uinT8), File)) != sizeof(uinT8) || (nread = fread((char *) &ProtoSet->Protos[x].C, 1, sizeof(inT8), File)) != sizeof(inT8) || (nread = fread((char *) &ProtoSet->Protos[x].Angle, 1, sizeof(uinT8), File)) != sizeof(uinT8)) cprintf("Bad read of inttemp!\n"); for (y = 0; y < WerdsPerConfigVec; y++) if ((nread = fread((char *) &ProtoSet->Protos[x].Configs[y], 1, sizeof(uinT32), File)) != sizeof(uinT32)) cprintf("Bad read of inttemp!\n"); } } else { if ((nread = fread((char *) ProtoSet, 1, sizeof(PROTO_SET_STRUCT), File)) != sizeof(PROTO_SET_STRUCT)) cprintf("Bad read of inttemp!\n"); } if (swap) { for (x = 0; x < NUM_PP_PARAMS; x++) for (y = 0; y < NUM_PP_BUCKETS; y++) for (z = 0; z < WERDS_PER_PP_VECTOR; z++) Reverse32(&ProtoSet->ProtoPruner[x][y][z]); for (x = 0; x < PROTOS_PER_PROTO_SET; x++) for (y = 0; y < WerdsPerConfigVec; y++) Reverse32(&ProtoSet->Protos[x].Configs[y]); } Class->ProtoSets[j] = ProtoSet; } if (version_id < 4) Class->font_set_id = -1; else { fread(&Class->font_set_id, sizeof(int), 1, File); if (swap) Reverse32(&Class->font_set_id); } } if (version_id < 2) { /* add an empty NULL class with class id 0 */ assert(UnusedClassIdIn (Templates, 0)); ClassForClassId (Templates, 0) = NewIntClass (1, 1); ClassForClassId (Templates, 0)->font_set_id = -1; Templates->NumClasses++; /* make sure the classes are contiguous */ for (i = 0; i < MAX_NUM_CLASSES; i++) { if (i < Templates->NumClasses) { if (ClassForClassId (Templates, i) == NULL) { fprintf(stderr, "Non-contiguous class ids in inttemp\n"); exit(1); } } else { if (ClassForClassId (Templates, i) != NULL) { fprintf(stderr, "Class id %d exceeds NumClassesIn (Templates) %d\n", i, Templates->NumClasses); exit(1); } } } } if (version_id >= 4) { this->fontinfo_table_.read(File, NewPermanentTessCallback(read_info), swap); if (version_id >= 5) { this->fontinfo_table_.read(File, NewPermanentTessCallback(read_spacing_info), swap); } this->fontset_table_.read(File, NewPermanentTessCallback(read_set), swap); } // Clean up. delete[] IndexFor; delete[] ClassIdFor; delete[] TempClassPruner; return (Templates); } /* ReadIntTemplates */ /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED void Classify::ShowMatchDisplay() { /* ** Parameters: none ** Globals: ** FeatureShapes display list containing feature matches ** ProtoShapes display list containing proto matches ** Operation: This routine sends the shapes in the global display ** lists to the match debugger window. ** Return: none ** Exceptions: none ** History: Thu Mar 21 15:47:33 1991, DSJ, Created. */ InitIntMatchWindowIfReqd(); if (ProtoDisplayWindow) { ProtoDisplayWindow->Clear(); } if (FeatureDisplayWindow) { FeatureDisplayWindow->Clear(); } ClearFeatureSpaceWindow( static_cast(static_cast(classify_norm_method)), IntMatchWindow); IntMatchWindow->ZoomToRectangle(INT_MIN_X, INT_MIN_Y, INT_MAX_X, INT_MAX_Y); if (ProtoDisplayWindow) { ProtoDisplayWindow->ZoomToRectangle(INT_MIN_X, INT_MIN_Y, INT_MAX_X, INT_MAX_Y); } if (FeatureDisplayWindow) { FeatureDisplayWindow->ZoomToRectangle(INT_MIN_X, INT_MIN_Y, INT_MAX_X, INT_MAX_Y); } } /* ShowMatchDisplay */ // Clears the given window and draws the featurespace guides for the // appropriate normalization method. void ClearFeatureSpaceWindow(NORM_METHOD norm_method, ScrollView* window) { window->Clear(); window->Pen(ScrollView::GREY); // Draw the feature space limit rectangle. window->Rectangle(0, 0, INT_MAX_X, INT_MAX_Y); if (norm_method == baseline) { window->SetCursor(0, INT_DESCENDER); window->DrawTo(INT_MAX_X, INT_DESCENDER); window->SetCursor(0, INT_BASELINE); window->DrawTo(INT_MAX_X, INT_BASELINE); window->SetCursor(0, INT_XHEIGHT); window->DrawTo(INT_MAX_X, INT_XHEIGHT); window->SetCursor(0, INT_CAPHEIGHT); window->DrawTo(INT_MAX_X, INT_CAPHEIGHT); } else { window->Rectangle(INT_XCENTER - INT_XRADIUS, INT_YCENTER - INT_YRADIUS, INT_XCENTER + INT_XRADIUS, INT_YCENTER + INT_YRADIUS); } } #endif /*---------------------------------------------------------------------------*/ void Classify::WriteIntTemplates(FILE *File, INT_TEMPLATES Templates, const UNICHARSET& target_unicharset) { /* ** Parameters: ** File open file to write templates to ** Templates templates to save into File ** Globals: none ** Operation: This routine writes Templates to File. The format ** is an efficient binary format. File must already be open ** for writing. ** Return: none ** Exceptions: none ** History: Wed Feb 27 11:48:46 1991, DSJ, Created. */ int i, j; INT_CLASS Class; int unicharset_size = target_unicharset.size(); int version_id = -5; // When negated by the reader -1 becomes +1 etc. if (Templates->NumClasses != unicharset_size) { cprintf("Warning: executing WriteIntTemplates() with %d classes in" " Templates, while target_unicharset size is %d\n", Templates->NumClasses, unicharset_size); } /* first write the high level template struct */ fwrite(&unicharset_size, sizeof(unicharset_size), 1, File); fwrite(&version_id, sizeof(version_id), 1, File); fwrite(&Templates->NumClassPruners, sizeof(Templates->NumClassPruners), 1, File); fwrite(&Templates->NumClasses, sizeof(Templates->NumClasses), 1, File); /* then write out the class pruners */ for (i = 0; i < Templates->NumClassPruners; i++) fwrite(Templates->ClassPruners[i], sizeof(CLASS_PRUNER_STRUCT), 1, File); /* then write out each class */ for (i = 0; i < Templates->NumClasses; i++) { Class = Templates->Class[i]; /* first write out the high level struct for the class */ fwrite(&Class->NumProtos, sizeof(Class->NumProtos), 1, File); fwrite(&Class->NumProtoSets, sizeof(Class->NumProtoSets), 1, File); ASSERT_HOST(Class->NumConfigs == this->fontset_table_.get(Class->font_set_id).size); fwrite(&Class->NumConfigs, sizeof(Class->NumConfigs), 1, File); for (j = 0; j < Class->NumConfigs; ++j) { fwrite(&Class->ConfigLengths[j], sizeof(uinT16), 1, File); } /* then write out the proto lengths */ if (MaxNumIntProtosIn (Class) > 0) { fwrite ((char *) (Class->ProtoLengths), sizeof (uinT8), MaxNumIntProtosIn (Class), File); } /* then write out the proto sets */ for (j = 0; j < Class->NumProtoSets; j++) fwrite ((char *) Class->ProtoSets[j], sizeof (PROTO_SET_STRUCT), 1, File); /* then write the fonts info */ fwrite(&Class->font_set_id, sizeof(int), 1, File); } /* Write the fonts info tables */ this->fontinfo_table_.write(File, NewPermanentTessCallback(write_info)); this->fontinfo_table_.write(File, NewPermanentTessCallback(write_spacing_info)); this->fontset_table_.write(File, NewPermanentTessCallback(write_set)); } /* WriteIntTemplates */ } // namespace tesseract /*----------------------------------------------------------------------------- Private Code -----------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/ FLOAT32 BucketStart(int Bucket, FLOAT32 Offset, int NumBuckets) { /* ** Parameters: ** Bucket bucket whose start is to be computed ** Offset offset used to map params to buckets ** NumBuckets total number of buckets ** Globals: none ** Operation: This routine returns the parameter value which ** corresponds to the beginning of the specified bucket. ** The bucket number should have been generated using the ** BucketFor() function with parameters Offset and NumBuckets. ** Return: Param value corresponding to start position of Bucket. ** Exceptions: none ** History: Thu Feb 14 13:24:33 1991, DSJ, Created. */ return (((FLOAT32) Bucket / NumBuckets) - Offset); } /* BucketStart */ /*---------------------------------------------------------------------------*/ FLOAT32 BucketEnd(int Bucket, FLOAT32 Offset, int NumBuckets) { /* ** Parameters: ** Bucket bucket whose end is to be computed ** Offset offset used to map params to buckets ** NumBuckets total number of buckets ** Globals: none ** Operation: This routine returns the parameter value which ** corresponds to the end of the specified bucket. ** The bucket number should have been generated using the ** BucketFor() function with parameters Offset and NumBuckets. ** Return: Param value corresponding to end position of Bucket. ** Exceptions: none ** History: Thu Feb 14 13:24:33 1991, DSJ, Created. */ return (((FLOAT32) (Bucket + 1) / NumBuckets) - Offset); } /* BucketEnd */ /*---------------------------------------------------------------------------*/ void DoFill(FILL_SPEC *FillSpec, CLASS_PRUNER_STRUCT* Pruner, register uinT32 ClassMask, register uinT32 ClassCount, register uinT32 WordIndex) { /* ** Parameters: ** FillSpec specifies which bits to fill in pruner ** Pruner class pruner to be filled ** ClassMask indicates which bits to change in each word ** ClassCount indicates what to change bits to ** WordIndex indicates which word to change ** Globals: none ** Operation: This routine fills in the section of a class pruner ** corresponding to a single x value for a single proto of ** a class. ** Return: none ** Exceptions: none ** History: Tue Feb 19 11:11:29 1991, DSJ, Created. */ register int X, Y, Angle; register uinT32 OldWord; X = FillSpec->X; if (X < 0) X = 0; if (X >= NUM_CP_BUCKETS) X = NUM_CP_BUCKETS - 1; if (FillSpec->YStart < 0) FillSpec->YStart = 0; if (FillSpec->YEnd >= NUM_CP_BUCKETS) FillSpec->YEnd = NUM_CP_BUCKETS - 1; for (Y = FillSpec->YStart; Y <= FillSpec->YEnd; Y++) for (Angle = FillSpec->AngleStart; TRUE; CircularIncrement (Angle, NUM_CP_BUCKETS)) { OldWord = Pruner->p[X][Y][Angle][WordIndex]; if (ClassCount > (OldWord & ClassMask)) { OldWord &= ~ClassMask; OldWord |= ClassCount; Pruner->p[X][Y][Angle][WordIndex] = OldWord; } if (Angle == FillSpec->AngleEnd) break; } } /* DoFill */ /*---------------------------------------------------------------------------*/ BOOL8 FillerDone(TABLE_FILLER *Filler) { /* ** Parameters: ** Filler table filler to check if done ** Globals: none ** Operation: Return TRUE if the specified table filler is done, i.e. ** if it has no more lines to fill. ** Return: TRUE if no more lines to fill, FALSE otherwise. ** Exceptions: none ** History: Tue Feb 19 10:08:05 1991, DSJ, Created. */ FILL_SWITCH *Next; Next = &(Filler->Switch[Filler->NextSwitch]); if (Filler->X > Next->X && Next->Type == LastSwitch) return (TRUE); else return (FALSE); } /* FillerDone */ /*---------------------------------------------------------------------------*/ void FillPPCircularBits(uinT32 ParamTable[NUM_PP_BUCKETS][WERDS_PER_PP_VECTOR], int Bit, FLOAT32 Center, FLOAT32 Spread, bool debug) { /* ** Parameters: ** ParamTable table of bit vectors, one per param bucket ** Bit bit position in vectors to be filled ** Center center of filled area ** Spread spread of filled area ** Globals: none ** Operation: This routine sets Bit in each bit vector whose ** bucket lies within the range Center +- Spread. The fill ** is done for a circular dimension, i.e. bucket 0 is adjacent ** to the last bucket. It is assumed that Center and Spread ** are expressed in a circular coordinate system whose range ** is 0 to 1. ** Return: none ** Exceptions: none ** History: Tue Oct 16 09:26:54 1990, DSJ, Created. */ int i, FirstBucket, LastBucket; if (Spread > 0.5) Spread = 0.5; FirstBucket = (int) floor ((Center - Spread) * NUM_PP_BUCKETS); if (FirstBucket < 0) FirstBucket += NUM_PP_BUCKETS; LastBucket = (int) floor ((Center + Spread) * NUM_PP_BUCKETS); if (LastBucket >= NUM_PP_BUCKETS) LastBucket -= NUM_PP_BUCKETS; if (debug) tprintf("Circular fill from %d to %d", FirstBucket, LastBucket); for (i = FirstBucket; TRUE; CircularIncrement (i, NUM_PP_BUCKETS)) { SET_BIT (ParamTable[i], Bit); /* exit loop after we have set the bit for the last bucket */ if (i == LastBucket) break; } } /* FillPPCircularBits */ /*---------------------------------------------------------------------------*/ void FillPPLinearBits(uinT32 ParamTable[NUM_PP_BUCKETS][WERDS_PER_PP_VECTOR], int Bit, FLOAT32 Center, FLOAT32 Spread, bool debug) { /* ** Parameters: ** ParamTable table of bit vectors, one per param bucket ** Bit bit number being filled ** Center center of filled area ** Spread spread of filled area ** Globals: none ** Operation: This routine sets Bit in each bit vector whose ** bucket lies within the range Center +- Spread. The fill ** is done for a linear dimension, i.e. there is no wrap-around ** for this dimension. It is assumed that Center and Spread ** are expressed in a linear coordinate system whose range ** is approximately 0 to 1. Values outside this range will ** be clipped. ** Return: none ** Exceptions: none ** History: Tue Oct 16 09:26:54 1990, DSJ, Created. */ int i, FirstBucket, LastBucket; FirstBucket = (int) floor ((Center - Spread) * NUM_PP_BUCKETS); if (FirstBucket < 0) FirstBucket = 0; LastBucket = (int) floor ((Center + Spread) * NUM_PP_BUCKETS); if (LastBucket >= NUM_PP_BUCKETS) LastBucket = NUM_PP_BUCKETS - 1; if (debug) tprintf("Linear fill from %d to %d", FirstBucket, LastBucket); for (i = FirstBucket; i <= LastBucket; i++) SET_BIT (ParamTable[i], Bit); } /* FillPPLinearBits */ /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED namespace tesseract { CLASS_ID Classify::GetClassToDebug(const char *Prompt, bool* adaptive_on, bool* pretrained_on, int* shape_id) { /* ** Parameters: ** Prompt prompt to print while waiting for input from window ** Globals: none ** Operation: This routine prompts the user with Prompt and waits ** for the user to enter something in the debug window. ** Return: Character entered in the debug window. ** Exceptions: none ** History: Thu Mar 21 16:55:13 1991, DSJ, Created. */ tprintf("%s\n", Prompt); SVEvent* ev; SVEventType ev_type; int unichar_id = INVALID_UNICHAR_ID; // Wait until a click or popup event. do { ev = IntMatchWindow->AwaitEvent(SVET_ANY); ev_type = ev->type; if (ev_type == SVET_POPUP) { if (ev->command_id == IDA_SHAPE_INDEX) { if (shape_table_ != NULL) { *shape_id = atoi(ev->parameter); *adaptive_on = false; *pretrained_on = true; if (*shape_id >= 0 && *shape_id < shape_table_->NumShapes()) { int font_id; shape_table_->GetFirstUnicharAndFont(*shape_id, &unichar_id, &font_id); tprintf("Shape %d, first unichar=%d, font=%d\n", *shape_id, unichar_id, font_id); return unichar_id; } tprintf("Shape index '%s' not found in shape table\n", ev->parameter); } else { tprintf("No shape table loaded!\n"); } } else { if (unicharset.contains_unichar(ev->parameter)) { unichar_id = unicharset.unichar_to_id(ev->parameter); if (ev->command_id == IDA_ADAPTIVE) { *adaptive_on = true; *pretrained_on = false; *shape_id = -1; } else if (ev->command_id == IDA_STATIC) { *adaptive_on = false; *pretrained_on = true; } else { *adaptive_on = true; *pretrained_on = true; } if (ev->command_id == IDA_ADAPTIVE || shape_table_ == NULL) { *shape_id = -1; return unichar_id; } for (int s = 0; s < shape_table_->NumShapes(); ++s) { if (shape_table_->GetShape(s).ContainsUnichar(unichar_id)) { tprintf("%s\n", shape_table_->DebugStr(s).string()); } } } else { tprintf("Char class '%s' not found in unicharset", ev->parameter); } } } delete ev; } while (ev_type != SVET_CLICK); return 0; } /* GetClassToDebug */ } // namespace tesseract #endif /*---------------------------------------------------------------------------*/ void GetCPPadsForLevel(int Level, FLOAT32 *EndPad, FLOAT32 *SidePad, FLOAT32 *AnglePad) { /* ** Parameters: ** Level "tightness" level to return pads for ** EndPad place to put end pad for Level ** SidePad place to put side pad for Level ** AnglePad place to put angle pad for Level ** Globals: none ** Operation: This routine copies the appropriate global pad variables ** into EndPad, SidePad, and AnglePad. This is a kludge used ** to get around the fact that global control variables cannot ** be arrays. If the specified level is illegal, the tightest ** possible pads are returned. ** Return: none (results are returned in EndPad, SidePad, and AnglePad. ** Exceptions: none ** History: Thu Feb 14 08:26:49 1991, DSJ, Created. */ switch (Level) { case 0: *EndPad = classify_cp_end_pad_loose * GetPicoFeatureLength (); *SidePad = classify_cp_side_pad_loose * GetPicoFeatureLength (); *AnglePad = classify_cp_angle_pad_loose / 360.0; break; case 1: *EndPad = classify_cp_end_pad_medium * GetPicoFeatureLength (); *SidePad = classify_cp_side_pad_medium * GetPicoFeatureLength (); *AnglePad = classify_cp_angle_pad_medium / 360.0; break; case 2: *EndPad = classify_cp_end_pad_tight * GetPicoFeatureLength (); *SidePad = classify_cp_side_pad_tight * GetPicoFeatureLength (); *AnglePad = classify_cp_angle_pad_tight / 360.0; break; default: *EndPad = classify_cp_end_pad_tight * GetPicoFeatureLength (); *SidePad = classify_cp_side_pad_tight * GetPicoFeatureLength (); *AnglePad = classify_cp_angle_pad_tight / 360.0; break; } if (*AnglePad > 0.5) *AnglePad = 0.5; } /* GetCPPadsForLevel */ /*---------------------------------------------------------------------------*/ ScrollView::Color GetMatchColorFor(FLOAT32 Evidence) { /* ** Parameters: ** Evidence evidence value to return color for ** Globals: none ** Operation: ** Return: Color which corresponds to specified Evidence value. ** Exceptions: none ** History: Thu Mar 21 15:24:52 1991, DSJ, Created. */ assert (Evidence >= 0.0); assert (Evidence <= 1.0); if (Evidence >= 0.90) return ScrollView::WHITE; else if (Evidence >= 0.75) return ScrollView::GREEN; else if (Evidence >= 0.50) return ScrollView::RED; else return ScrollView::BLUE; } /* GetMatchColorFor */ /*---------------------------------------------------------------------------*/ void GetNextFill(TABLE_FILLER *Filler, FILL_SPEC *Fill) { /* ** Parameters: ** Filler filler to get next fill spec from ** Fill place to put spec for next fill ** Globals: none ** Operation: This routine returns (in Fill) the specification of ** the next line to be filled from Filler. FillerDone() should ** always be called before GetNextFill() to ensure that we ** do not run past the end of the fill table. ** Return: none (results are returned in Fill) ** Exceptions: none ** History: Tue Feb 19 10:17:42 1991, DSJ, Created. */ FILL_SWITCH *Next; /* compute the fill assuming no switches will be encountered */ Fill->AngleStart = Filler->AngleStart; Fill->AngleEnd = Filler->AngleEnd; Fill->X = Filler->X; Fill->YStart = Filler->YStart >> 8; Fill->YEnd = Filler->YEnd >> 8; /* update the fill info and the filler for ALL switches at this X value */ Next = &(Filler->Switch[Filler->NextSwitch]); while (Filler->X >= Next->X) { Fill->X = Filler->X = Next->X; if (Next->Type == StartSwitch) { Fill->YStart = Next->Y; Filler->StartDelta = Next->Delta; Filler->YStart = Next->YInit; } else if (Next->Type == EndSwitch) { Fill->YEnd = Next->Y; Filler->EndDelta = Next->Delta; Filler->YEnd = Next->YInit; } else { /* Type must be LastSwitch */ break; } Filler->NextSwitch++; Next = &(Filler->Switch[Filler->NextSwitch]); } /* prepare the filler for the next call to this routine */ Filler->X++; Filler->YStart += Filler->StartDelta; Filler->YEnd += Filler->EndDelta; } /* GetNextFill */ /*---------------------------------------------------------------------------*/ /** * This routine computes a data structure (Filler) * which can be used to fill in a rectangle surrounding * the specified Proto. * * @param EndPad, SidePad, AnglePad padding to add to proto * @param Proto proto to create a filler for * @param Filler place to put table filler * * Globals: none * * @return none (results are returned in Filler) * @note Exceptions: none * @note History: Thu Feb 14 09:27:05 1991, DSJ, Created. */ void InitTableFiller (FLOAT32 EndPad, FLOAT32 SidePad, FLOAT32 AnglePad, PROTO Proto, TABLE_FILLER * Filler) #define XS X_SHIFT #define YS Y_SHIFT #define AS ANGLE_SHIFT #define NB NUM_CP_BUCKETS { FLOAT32 Angle; FLOAT32 X, Y, HalfLength; FLOAT32 Cos, Sin; FLOAT32 XAdjust, YAdjust; FPOINT Start, Switch1, Switch2, End; int S1 = 0; int S2 = 1; Angle = Proto->Angle; X = Proto->X; Y = Proto->Y; HalfLength = Proto->Length / 2.0; Filler->AngleStart = CircBucketFor(Angle - AnglePad, AS, NB); Filler->AngleEnd = CircBucketFor(Angle + AnglePad, AS, NB); Filler->NextSwitch = 0; if (fabs (Angle - 0.0) < HV_TOLERANCE || fabs (Angle - 0.5) < HV_TOLERANCE) { /* horizontal proto - handle as special case */ Filler->X = BucketFor(X - HalfLength - EndPad, XS, NB); Filler->YStart = BucketFor(Y - SidePad, YS, NB * 256); Filler->YEnd = BucketFor(Y + SidePad, YS, NB * 256); Filler->StartDelta = 0; Filler->EndDelta = 0; Filler->Switch[0].Type = LastSwitch; Filler->Switch[0].X = BucketFor(X + HalfLength + EndPad, XS, NB); } else if (fabs(Angle - 0.25) < HV_TOLERANCE || fabs(Angle - 0.75) < HV_TOLERANCE) { /* vertical proto - handle as special case */ Filler->X = BucketFor(X - SidePad, XS, NB); Filler->YStart = BucketFor(Y - HalfLength - EndPad, YS, NB * 256); Filler->YEnd = BucketFor(Y + HalfLength + EndPad, YS, NB * 256); Filler->StartDelta = 0; Filler->EndDelta = 0; Filler->Switch[0].Type = LastSwitch; Filler->Switch[0].X = BucketFor(X + SidePad, XS, NB); } else { /* diagonal proto */ if ((Angle > 0.0 && Angle < 0.25) || (Angle > 0.5 && Angle < 0.75)) { /* rising diagonal proto */ Angle *= 2.0 * PI; Cos = fabs(cos(Angle)); Sin = fabs(sin(Angle)); /* compute the positions of the corners of the acceptance region */ Start.x = X - (HalfLength + EndPad) * Cos - SidePad * Sin; Start.y = Y - (HalfLength + EndPad) * Sin + SidePad * Cos; End.x = 2.0 * X - Start.x; End.y = 2.0 * Y - Start.y; Switch1.x = X - (HalfLength + EndPad) * Cos + SidePad * Sin; Switch1.y = Y - (HalfLength + EndPad) * Sin - SidePad * Cos; Switch2.x = 2.0 * X - Switch1.x; Switch2.y = 2.0 * Y - Switch1.y; if (Switch1.x > Switch2.x) { S1 = 1; S2 = 0; } /* translate into bucket positions and deltas */ Filler->X = (inT8) MapParam(Start.x, XS, NB); Filler->StartDelta = -(inT16) ((Cos / Sin) * 256); Filler->EndDelta = (inT16) ((Sin / Cos) * 256); XAdjust = BucketEnd(Filler->X, XS, NB) - Start.x; YAdjust = XAdjust * Cos / Sin; Filler->YStart = (inT16) MapParam(Start.y - YAdjust, YS, NB * 256); YAdjust = XAdjust * Sin / Cos; Filler->YEnd = (inT16) MapParam(Start.y + YAdjust, YS, NB * 256); Filler->Switch[S1].Type = StartSwitch; Filler->Switch[S1].X = (inT8) MapParam(Switch1.x, XS, NB); Filler->Switch[S1].Y = (inT8) MapParam(Switch1.y, YS, NB); XAdjust = Switch1.x - BucketStart(Filler->Switch[S1].X, XS, NB); YAdjust = XAdjust * Sin / Cos; Filler->Switch[S1].YInit = (inT16) MapParam(Switch1.y - YAdjust, YS, NB * 256); Filler->Switch[S1].Delta = Filler->EndDelta; Filler->Switch[S2].Type = EndSwitch; Filler->Switch[S2].X = (inT8) MapParam(Switch2.x, XS, NB); Filler->Switch[S2].Y = (inT8) MapParam(Switch2.y, YS, NB); XAdjust = Switch2.x - BucketStart(Filler->Switch[S2].X, XS, NB); YAdjust = XAdjust * Cos / Sin; Filler->Switch[S2].YInit = (inT16) MapParam(Switch2.y + YAdjust, YS, NB * 256); Filler->Switch[S2].Delta = Filler->StartDelta; Filler->Switch[2].Type = LastSwitch; Filler->Switch[2].X = (inT8)MapParam(End.x, XS, NB); } else { /* falling diagonal proto */ Angle *= 2.0 * PI; Cos = fabs(cos(Angle)); Sin = fabs(sin(Angle)); /* compute the positions of the corners of the acceptance region */ Start.x = X - (HalfLength + EndPad) * Cos - SidePad * Sin; Start.y = Y + (HalfLength + EndPad) * Sin - SidePad * Cos; End.x = 2.0 * X - Start.x; End.y = 2.0 * Y - Start.y; Switch1.x = X - (HalfLength + EndPad) * Cos + SidePad * Sin; Switch1.y = Y + (HalfLength + EndPad) * Sin + SidePad * Cos; Switch2.x = 2.0 * X - Switch1.x; Switch2.y = 2.0 * Y - Switch1.y; if (Switch1.x > Switch2.x) { S1 = 1; S2 = 0; } /* translate into bucket positions and deltas */ Filler->X = (inT8) MapParam(Start.x, XS, NB); Filler->StartDelta = -(inT16) ((Sin / Cos) * 256); Filler->EndDelta = (inT16) ((Cos / Sin) * 256); XAdjust = BucketEnd(Filler->X, XS, NB) - Start.x; YAdjust = XAdjust * Sin / Cos; Filler->YStart = (inT16) MapParam(Start.y - YAdjust, YS, NB * 256); YAdjust = XAdjust * Cos / Sin; Filler->YEnd = (inT16) MapParam(Start.y + YAdjust, YS, NB * 256); Filler->Switch[S1].Type = EndSwitch; Filler->Switch[S1].X = (inT8) MapParam(Switch1.x, XS, NB); Filler->Switch[S1].Y = (inT8) MapParam(Switch1.y, YS, NB); XAdjust = Switch1.x - BucketStart(Filler->Switch[S1].X, XS, NB); YAdjust = XAdjust * Sin / Cos; Filler->Switch[S1].YInit = (inT16) MapParam(Switch1.y + YAdjust, YS, NB * 256); Filler->Switch[S1].Delta = Filler->StartDelta; Filler->Switch[S2].Type = StartSwitch; Filler->Switch[S2].X = (inT8) MapParam(Switch2.x, XS, NB); Filler->Switch[S2].Y = (inT8) MapParam(Switch2.y, YS, NB); XAdjust = Switch2.x - BucketStart(Filler->Switch[S2].X, XS, NB); YAdjust = XAdjust * Cos / Sin; Filler->Switch[S2].YInit = (inT16) MapParam(Switch2.y - YAdjust, YS, NB * 256); Filler->Switch[S2].Delta = Filler->EndDelta; Filler->Switch[2].Type = LastSwitch; Filler->Switch[2].X = (inT8) MapParam(End.x, XS, NB); } } } /* InitTableFiller */ /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED /* * Parameters: * ShapeList shape list to add feature rendering to * Feature feature to be rendered * Color color to use for feature rendering * Globals: none * Operation: This routine renders the specified feature into ShapeList. * Return: New shape list with rendering of Feature added. * @note Exceptions: none * @note History: Thu Mar 21 14:57:41 1991, DSJ, Created. */ void RenderIntFeature(ScrollView *window, const INT_FEATURE_STRUCT* Feature, ScrollView::Color color) { FLOAT32 X, Y, Dx, Dy, Length; window->Pen(color); assert(Feature != NULL); assert(color != 0); X = Feature->X; Y = Feature->Y; Length = GetPicoFeatureLength() * 0.7 * INT_CHAR_NORM_RANGE; // The -PI has no significant effect here, but the value of Theta is computed // using BinaryAnglePlusPi in intfx.cpp. Dx = (Length / 2.0) * cos((Feature->Theta / 256.0) * 2.0 * PI - PI); Dy = (Length / 2.0) * sin((Feature->Theta / 256.0) * 2.0 * PI - PI); window->SetCursor(X, Y); window->DrawTo(X + Dx, Y + Dy); } /* RenderIntFeature */ /*---------------------------------------------------------------------------*/ /* * This routine extracts the parameters of the specified * proto from the class description and adds a rendering of * the proto onto the ShapeList. * * @param Class class that proto is contained in * @param ProtoId id of proto to be rendered * @param color color to render proto in * * Globals: none * * @return New shape list with a rendering of one proto added. * @note Exceptions: none * @note History: Thu Mar 21 10:21:09 1991, DSJ, Created. */ void RenderIntProto(ScrollView *window, INT_CLASS Class, PROTO_ID ProtoId, ScrollView::Color color) { PROTO_SET ProtoSet; INT_PROTO Proto; int ProtoSetIndex; int ProtoWordIndex; FLOAT32 Length; int Xmin, Xmax, Ymin, Ymax; FLOAT32 X, Y, Dx, Dy; uinT32 ProtoMask; int Bucket; assert(ProtoId >= 0); assert(Class != NULL); assert(ProtoId < Class->NumProtos); assert(color != 0); window->Pen(color); ProtoSet = Class->ProtoSets[SetForProto(ProtoId)]; ProtoSetIndex = IndexForProto(ProtoId); Proto = &(ProtoSet->Protos[ProtoSetIndex]); Length = (Class->ProtoLengths[ProtoId] * GetPicoFeatureLength() * INT_CHAR_NORM_RANGE); ProtoMask = PPrunerMaskFor(ProtoId); ProtoWordIndex = PPrunerWordIndexFor(ProtoId); // find the x and y extent of the proto from the proto pruning table Xmin = Ymin = NUM_PP_BUCKETS; Xmax = Ymax = 0; for (Bucket = 0; Bucket < NUM_PP_BUCKETS; Bucket++) { if (ProtoMask & ProtoSet->ProtoPruner[PRUNER_X][Bucket][ProtoWordIndex]) { UpdateRange(Bucket, &Xmin, &Xmax); } if (ProtoMask & ProtoSet->ProtoPruner[PRUNER_Y][Bucket][ProtoWordIndex]) { UpdateRange(Bucket, &Ymin, &Ymax); } } X = (Xmin + Xmax + 1) / 2.0 * PROTO_PRUNER_SCALE; Y = (Ymin + Ymax + 1) / 2.0 * PROTO_PRUNER_SCALE; // The -PI has no significant effect here, but the value of Theta is computed // using BinaryAnglePlusPi in intfx.cpp. Dx = (Length / 2.0) * cos((Proto->Angle / 256.0) * 2.0 * PI - PI); Dy = (Length / 2.0) * sin((Proto->Angle / 256.0) * 2.0 * PI - PI); window->SetCursor(X - Dx, Y - Dy); window->DrawTo(X + Dx, Y + Dy); } /* RenderIntProto */ #endif /*---------------------------------------------------------------------------*/ /** * This routine truncates Param to lie within the range * of Min-Max inclusive. If a truncation is performed, and * Id is not null, an warning message is printed. * * @param Param parameter value to be truncated * @param Min, Max parameter limits (inclusive) * @param Id string id of parameter for error messages * * Globals: none * * @return Truncated parameter. * @note Exceptions: none * @note History: Fri Feb 8 11:54:28 1991, DSJ, Created. */ int TruncateParam(FLOAT32 Param, int Min, int Max, char *Id) { if (Param < Min) { if (Id) cprintf("Warning: Param %s truncated from %f to %d!\n", Id, Param, Min); Param = Min; } else if (Param > Max) { if (Id) cprintf("Warning: Param %s truncated from %f to %d!\n", Id, Param, Max); Param = Max; } return static_cast(floor(Param)); } /* TruncateParam */ /*---------------------------------------------------------------------------*/ #ifndef GRAPHICS_DISABLED /** * Initializes the int matcher window if it is not already * initialized. */ void InitIntMatchWindowIfReqd() { if (IntMatchWindow == NULL) { IntMatchWindow = CreateFeatureSpaceWindow("IntMatchWindow", 50, 200); SVMenuNode* popup_menu = new SVMenuNode(); popup_menu->AddChild("Debug Adapted classes", IDA_ADAPTIVE, "x", "Class to debug"); popup_menu->AddChild("Debug Static classes", IDA_STATIC, "x", "Class to debug"); popup_menu->AddChild("Debug Both", IDA_BOTH, "x", "Class to debug"); popup_menu->AddChild("Debug Shape Index", IDA_SHAPE_INDEX, "0", "Index to debug"); popup_menu->BuildMenu(IntMatchWindow, false); } } /** * Initializes the proto display window if it is not already * initialized. */ void InitProtoDisplayWindowIfReqd() { if (ProtoDisplayWindow == NULL) { ProtoDisplayWindow = CreateFeatureSpaceWindow("ProtoDisplayWindow", 550, 200); } } /** * Initializes the feature display window if it is not already * initialized. */ void InitFeatureDisplayWindowIfReqd() { if (FeatureDisplayWindow == NULL) { FeatureDisplayWindow = CreateFeatureSpaceWindow("FeatureDisplayWindow", 50, 700); } } // Creates a window of the appropriate size for displaying elements // in feature space. ScrollView* CreateFeatureSpaceWindow(const char* name, int xpos, int ypos) { return new ScrollView(name, xpos, ypos, 520, 520, 260, 260, true); } #endif // GRAPHICS_DISABLED