import { GrayscaleAlgorithm } from './grayscale';
import { TransformAlgorithm } from './transform';
export interface Options {
    pass?: string;
    size: number;
    copies: number;
    tolerance: number;
    transformAlgorithm: TransformAlgorithm;
}
export interface EncodeOptions extends Options {
    text: string;
    narrow: number;
    grayscaleAlgorithm: GrayscaleAlgorithm;
    exhaustPixels: boolean;
    cropEdgePixels: boolean;
    fakeMaskPixels: boolean;
}
export interface DecodeOptions extends Options {
}
export declare function encodeImg(imgData: ImageData, maskData: ImageData, options: EncodeOptions): Promise<ImageData>;
export declare function decodeImg(imgData: ImageData, maskData: ImageData, options: DecodeOptions): Promise<string>;
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