import type { ImageData as JPEGImageData } from 'jpeg-js';
import type { ImageData as PNGImageData } from 'fast-png';
export declare type ImageData = PNGImageData | JPEGImageData;
/**
 * Use the ImageData from a Canvas and turn the image in a 1-bit black and white image using dithering
 */
declare const _default: {
    /**
     * Change the image to grayscale
     *
     * @param  {object}   image         The imageData of a Canvas 2d context
     * @return {object}                 The resulting imageData
     *
     */
    grayscale(image: ImageData): ImageData;
    /**
     * Change the image to blank and white using a simple threshold
     *
     * @param  {object}   image         The imageData of a Canvas 2d context
     * @param  {number}   threshold     Threshold value (0-255)
     * @return {object}                 The resulting imageData
     *
     */
    threshold(image: ImageData, threshold: number): ImageData;
    /**
     * Change the image to blank and white using the Bayer algorithm
     *
     * @param  {object}   image         The imageData of a Canvas 2d context
     * @param  {number}   threshold     Threshold value (0-255)
     * @return {object}                 The resulting imageData
     *
     */
    bayer(image: ImageData, threshold: number): ImageData;
    /**
     * Change the image to blank and white using the Floyd-Steinberg algorithm
     *
     * @param  {object}   image         The imageData of a Canvas 2d context
     * @return {object}                 The resulting imageData
     *
     */
    floydsteinberg(image: ImageData): ImageData;
    /**
     * Change the image to blank and white using the Atkinson algorithm
     *
     * @param  {object}   image         The imageData of a Canvas 2d context
     * @return {object}                 The resulting imageData
     *
     */
    atkinson(image: ImageData): ImageData;
};
export default _default;