The compression method of depth map in 3D video

A compression method and apparatus of depth map in 3D video are proposed. The compression method includes an edge detection module, a homogenizing module, and a compression encoding module. An edge detection to a frame of depth map of 3D video is proceeded. A homogenizing process to a macroblock is proceeded when no object edge passes through the macroblock. And then an encoding process to the depth map is proceeded. Therefore, the data quality might be increased when the depth map is compressed and encoded according to the present disclosure.