import { OCRUtil } from './utils/ocr.js';
import { ElementType } from './types.js';
import type { ElementConfig, ElementResult, ScreenComparison } from './types.js';
export { ElementType };
export type { ElementConfig, ElementResult, ScreenComparison };
/**
 * Extracts UI element values from filled screens by comparing them to blank templates
 *
 * @deprecated Class name is outdated. Functionality remains the same but considers renaming to ElementExtractor.
 */
export declare class FieldExtractor {
    private visionUtil;
    private ocrUtil;
    private blankForm;
    private filledForm;
    private blankColor;
    private filledColor;
    private debug;
    constructor(ocrUtil: OCRUtil, debug?: boolean);
    /**
     * Load blank and live screenshots.
     * Blank is the whole screen; widgets on it can move. Do not warp the live
     * shot onto blank — match each template on both images independently.
     */
    loadForms(blankFormPath: string, filledFormPath: string): Promise<void>;
    /**
     * Extract values from multiple UI elements
     */
    extractElements(elementConfigs: readonly ElementConfig[] | ElementConfig[], options?: {
        ocrThreshold?: number;
        locateOnly?: boolean;
    }): Promise<ScreenComparison>;
    /**
     * Extract a single UI element value.
     * Match the template on blank (empty control) and on the live screenshot
     * (label needle so typed text does not tank confidence), then OCR the pair
     * of crops. Locations are live-screenshot coordinates for click/fill.
     */
    extractElement(config: ElementConfig, options?: {
        ocrThreshold?: number;
        locateOnly?: boolean;
    }): Promise<ElementResult>;
    /**
     * Match a field template on blank and on the live screenshot independently.
     * Java POC aligned scanned forms then cropped at blank coords; here the blank
     * is a full screen and windows can move, so each image gets its own match.
     */
    private locateOnBoth;
    private labelNeedle;
    private readChangedText;
    /**
     * Match an element's template against a live screenshot (no blank alignment).
     * Uses the label portion when ocrRect is set so filled values do not tank confidence.
     */
    locateOnScreenshot(screenshotPath: string, config: ElementConfig): Promise<ElementResult>;
    /**
     * Extract element using custom matcher function
     */
    private extractWithCustomMatcher;
    /**
     * Clean up OpenCV matrices
     */
    cleanup(): void;
}
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