wiki : YCbCr
做有關影像處理的時候多是以RGB值表示,但是若想用JPEG壓縮那就要換成以YCbCr表示。
Y'CbCr is not an absolute color space, it is a way of encoding RGB information.
以下一一介紹
YCbCr or Y'CbCr is a family of color spaces used as a part of the Color image pipeline in
Y' is the luma component
Y'跟原本的G值有關,主要影響亮度。
Cb and Cr are the blue-difference and red-difference chroma components.
這兩個就跟B以及R有關,主要影響彩度。
The prime (') on the Y is to distinguish the luma from luminance, meaning that light intensity is non-linearly encoded using gamma.
相關閱讀;
视讯基础知识-颜色空间
Camera Sensor 图像处理原理及实例分析
Diff of Y-Cb-Cr & Y-Pb-Pr
全站熱搜
留言列表