export interface OCRWord {
    text: string;
    confidence: number;
    bbox: {
        x0: number;
        y0: number;
        x1: number;
        y1: number;
    };
    center: {
        x: number;
        y: number;
    };
    tapCenter: {
        x: number;
        y: number;
    };
}
export interface OCROptions {
    scaleFactor?: number;
    platform?: "ios" | "android";
    devicePixelRatio?: number;
    signal?: AbortSignal;
}
export interface OCRLine {
    text: string;
    confidence: number;
    bbox: {
        x0: number;
        y0: number;
        x1: number;
        y1: number;
    };
    center: {
        x: number;
        y: number;
    };
    tapCenter: {
        x: number;
        y: number;
    };
}
export interface OCRResult {
    success: boolean;
    fullText: string;
    confidence: number;
    words: OCRWord[];
    lines: OCRLine[];
    processingTimeMs: number;
    engine: "easyocr" | "cloud";
}
export declare function inferIOSDevicePixelRatio(width: number, height: number): number;
export declare function toTapCoord(ocrCoord: number, _scaleFactor: number): number;
export declare function recognizeText(imageBuffer: Buffer, options?: OCROptions): Promise<OCRResult>;
export declare function terminateOCRWorker(): Promise<void>;
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