说明：  在完全局部二值模式中，局部区域可以由中心像素和局部差分的符号-幅度变换来描述。由3部分组成。分别是全局对比度，正负二值模式和幅度二值模式,其中，中心像素通过全局阈值形成二值编码.
(In complete local binary mode ,the local region can be described by local difference sign magnitude transform of central pixel and local difference. consists of three parts.They are global contrast . Positive negative binary mode and amplitude binary mode .Among them, the central pixel forms a binary code through the global threshold,)