/** @format */
import { Color } from '../color/color.js';
import { MemoryImage } from './image.js';
import { Palette } from './palette.js';
import { Quantizer } from './quantizer.js';
/**
 * A class that implements the Quantizer interface to perform binary quantization.
 */
export declare class BinaryQuantizer implements Quantizer {
    /**
     * The palette used for quantization.
     */
    private readonly _palette;
    /**
     * Gets the palette used for quantization.
     */
    get palette(): Palette;
    /**
     * The threshold value for binary quantization.
     */
    private readonly _threshold;
    /**
     * Gets the threshold value for binary quantization.
     */
    get threshold(): number;
    /**
     * Constructs a BinaryQuantizer with an optional threshold value.
     * @param {number} threshold - The threshold value for binary quantization. Default is 0.5.
     */
    constructor(threshold?: number);
    /**
     * Gets the color index based on the luminance of the color.
     * @param {Color} c - The color to be quantized.
     * @returns {number} The color index (0 or 1).
     */
    getColorIndex(c: Color): number;
    /**
     * Gets the color index based on the RGB values.
     * @param {number} r - The red component of the color.
     * @param {number} g - The green component of the color.
     * @param {number} b - The blue component of the color.
     * @returns {number} The color index (0 or 1).
     */
    getColorIndexRgb(r: number, g: number, b: number): number;
    /**
     * Gets the quantized color based on the luminance of the input color.
     * @param {Color} c - The color to be quantized.
     * @returns {Color} The quantized color.
     */
    getQuantizedColor(c: Color): Color;
    /**
     * Converts the image to a palette image.
     * @param {MemoryImage} image - The image to be converted.
     * @returns {MemoryImage} The palette image.
     */
    getIndexImage(image: MemoryImage): MemoryImage;
}