/**
 * Saliency Map Computation
 *
 * Computes visual saliency - regions that "pop out" and attract attention.
 * Used to guide saccadic attention to visually important areas.
 *
 * Implements a simplified Itti-Koch saliency model:
 * - Intensity contrast
 * - Edge density
 * - Local complexity
 *
 * For AR tracking, high-saliency regions often contain:
 * - Corners and edges (good for feature detection)
 * - High-contrast areas (robust to lighting changes)
 * - Texture-rich regions (distinctive for matching)
 */
export class SaliencyMap {
    /**
     * @param {number} width - Image width
     * @param {number} height - Image height
     */
    constructor(width: number, height: number);
    width: number;
    height: number;
    scale: number;
    scaledW: number;
    scaledH: number;
    intensityMap: Float32Array<ArrayBuffer>;
    contrastMap: Float32Array<ArrayBuffer>;
    edgeMap: Float32Array<ArrayBuffer>;
    saliencyBuffer: Float32Array<ArrayBuffer>;
    maxPeaks: number;
    suppressionRadius: number;
    /**
     * Compute saliency map for input image
     *
     * @param {Uint8Array} inputData - Grayscale input image
     * @returns {Object} Saliency result with peaks
     */
    compute(inputData: Uint8Array): Object;
    /**
     * Downsample input to working resolution
     * @private
     */
    private _downsample;
    /**
     * Compute local contrast map
     * @private
     */
    private _computeContrast;
    /**
     * Compute edge density map using Sobel-like operator
     * @private
     */
    private _computeEdges;
    /**
     * Combine features into final saliency map
     * @private
     */
    private _combineSaliency;
    /**
     * Find peaks in saliency map using non-maximum suppression
     * @private
     */
    private _findPeaks;
    /**
     * Get saliency value at a specific location
     *
     * @param {number} x - X coordinate in original image
     * @param {number} y - Y coordinate in original image
     * @returns {number} Saliency value (0-1)
     */
    getSaliencyAt(x: number, y: number): number;
}