export declare function _convol_u8(buf: Int32Array | Float32Array, src_d: number[], dst_d: number[], w: number, h: number, filter: Int32Array | Float32Array, kernel_size: number, half_kernel: number): void;
export declare function _convol(buf: Int32Array | Float32Array, src_d: number[], dst_d: number[], w: number, h: number, filter: Int32Array | Float32Array, kernel_size: number, half_kernel: number): void;