/**
 * Directly compute 64-bit LSH from FREAK samples
 * @param {Float32Array} samples - Pre-sampled intensities at FREAK positions
 * @returns {Uint32Array} 2-element array (64 bits)
 */
export function computeLSH64(samples: Float32Array): Uint32Array;
export function computeFullFREAK(samples: any): Uint8Array<ArrayBuffer>;
/**
 * Super-fast 8-byte (64-bit) dummy descriptor for Protocol V6 compatibility
 * when full descriptors are not required but an object is expected.
 */
export function packLSHIntoDescriptor(lsh: any): Uint8Array<ArrayBuffer>;