import { type CanvasLike } from "ppu-ocv/web";
import type { FlattenedPaddleOcrResult, PaddleOcrResult } from "../core/base-paddle-ocr.service.js";
import { BasePaddleOcrService } from "../core/base-paddle-ocr.service.js";
import type { PaddleOptions, RecognizeOptions } from "../interface.js";
export type { FlattenedPaddleOcrResult, PaddleOcrResult };
/**
 * PaddleOcrService for Web/Browser environments.
 * Uses onnxruntime-web and ppu-ocv/web instead of their Node counterparts.
 */
export declare class PaddleOcrService extends BasePaddleOcrService {
    constructor(options?: PaddleOptions);
    protected initSessions(): Promise<void>;
    /**
     * Loads a resource from a URL string, or the default URL.
     */
    private _loadResource;
    /**
     * Initialize the OCR service by loading models, dictionary, and the OpenCV runtime.
     *
     * Must be called before `recognize()`.
     */
    initialize(): Promise<void>;
    isInitialized(): boolean;
    changeDetectionModel(model: ArrayBuffer | string): Promise<void>;
    changeRecognitionModel(model: ArrayBuffer | string): Promise<void>;
    changeTextDictionary(dictionary: ArrayBuffer | string): Promise<void>;
    recognize(image: ArrayBuffer | CanvasLike, options: RecognizeOptions & {
        flatten: true;
    }): Promise<FlattenedPaddleOcrResult>;
    recognize(image: ArrayBuffer | CanvasLike, options?: RecognizeOptions & {
        flatten?: false;
    }): Promise<PaddleOcrResult>;
    /**
     * Release all ONNX sessions and free resources.
     */
    destroy(): Promise<void>;
}
export default PaddleOcrService;