/**
 * GPU Compute class - provides optimized image processing
 */
export class GPUCompute {
    gpu: any;
    kernelCache: Map<any, any>;
    initialized: boolean;
    /**
     * Initialize (tries GPU in browser, uses JS in Node)
     */
    init(): void;
    /**
     * Compute edge gradients
     */
    computeGradients(imageData: any, width: any, height: any): Float32Array<ArrayBuffer>;
    /**
     * Find local maxima
     */
    findLocalMaxima(gradients: any, width: any, height: any): Uint8Array<ArrayBuffer>;
    /**
     * Combined edge detection
     */
    edgeDetection(imageData: any, width: any, height: any): {
        dValue: Float32Array<ArrayBuffer>;
        isCandidate: Uint8Array<ArrayBuffer>;
    };
    /**
     * Gaussian blur
     */
    gaussianBlur(imageData: any, width: any, height: any): Float32Array<ArrayBuffer>;
    /**
     * Downsample by factor of 2
     */
    downsample(imageData: any, width: any, height: any): {
        data: Float32Array<ArrayBuffer>;
        width: number;
        height: number;
    };
    /**
     * Build Gaussian pyramid
     */
    buildPyramid(imageData: any, width: any, height: any, numLevels?: number): {
        data: Float32Array<ArrayBuffer>;
        width: any;
        height: any;
        scale: number;
    }[];
    /**
     * Check if GPU is available
     */
    isGPUAvailable(): boolean;
    /**
     * Cleanup resources
     */
    destroy(): void;
}
export const gpuCompute: GPUCompute;