import type { OCRResult, ScreenTile, BoundingBox } from './types';
export declare class RealOCRService {
    private worker;
    private initialized;
    private initPromise;
    initialize(): Promise<void>;
    private _initialize;
    extractText(imageBuffer: Buffer): Promise<OCRResult>;
    extractFromTile(tile: ScreenTile): Promise<OCRResult>;
    private preprocessImage;
    private convertTesseractResult;
    extractStructuredData(imageBuffer: Buffer): Promise<{
        tables?: Array<{
            rows: string[][];
            bbox: BoundingBox;
        }>;
        forms?: Array<{
            label: string;
            value: string;
            bbox: BoundingBox;
        }>;
        lists?: Array<{
            items: string[];
            bbox: BoundingBox;
        }>;
    }>;
    private detectTables;
    private detectForms;
    private detectLists;
    isInitialized(): boolean;
    dispose(): Promise<void>;
}