YCrCb即YUV，其中“Y”表示明亮度（Luminance或Luma），也就是灰阶值；而“U”和“V” 表示的则是色度（Chrominance或Chroma），作用是描述影像色彩及饱和度，用于指定像素的颜色。“亮度”是透过RGB输入信号来建立的，方法是将RGB信号的特定部分叠加到一起。“色度”则定义了颜色的两个方面─色调与饱和度，分别用Cr和CB来表示。其中，Cr反映了RGB输入信号红色部分与RGB信号亮度值之间的差异。而CB反映的是RGB输入信号蓝色部分与RGB信号亮度值之间的差异。-YCrCb YUV namely, of which "Y" expresses bright degree (Luminance or Luma), also is the grey-scale values　And "U" and "V" said is Chroma (Chrominance or Chroma), the function is to describe the image color and saturation, is used to specify the color of the pixels. "Brightness" is through the establishment of the input signal to RGB, method is to RGB signal certain part of the stack together. "Color" is the definition of the color two aspects ─ the tone and saturation, respectively for Cr and CB to said. Whether to hold or participate in the campus lectures is necessary.ignal brightness values differences. And CB reflects the input signal blue part and RGB RGB signal brightness values differences.