import type { BitDepth, Image } from '../Image.js';
export interface ConvertBitDepthOptions {
    /**
     * Image to which to output.
     */
    out?: Image;
}
/**
 * Convert the bit depth of an image.
 * @param image - Image to convert.
 * @param newBitDepth - Bit depth to convert to.
 * @param options - Convert bit depth options.
 * @returns Converted image.
 */
export declare function convertBitDepth(image: Image, newBitDepth: BitDepth, options?: ConvertBitDepthOptions): Image;
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