一个基于autocad vba开发的管线信息自动入库的小系统，通过捕捉管线特征点来进行管线属性信息的自动入库。-Autocad vba development of a pipeline based on information on automatic storage of small systems, through the capture feature point pipeline pipeline attribute information to carry out the autom

Convert RGB color values to YCbCr color space. used as a part of the color image pipeline in video and digital photography systems. Y′ is the luma component and CB and CR are the blue-difference and red-difference chroma components. Y′ (with prime)