快速查表法优化视频解码中YCbCr到RGB的转换  

A Method Based on Rapidly Looking up Tables of Converting YCbCr to RGB in Video Decoder

作　　者：周钱生[1] 戴麟[1] 

机构地区：[1]东南大学国家专用集成电路系统工程中心,江苏南京210096

出　　处：《现代电子技术》2007年第15期167-169,183,共4页Modern Electronics Technique

摘　　要：介绍视频处理过程中涉及到的两个颜色空间:RGB和YCbCr,以及他们之间的转换。用查表法优化媒体播放软件中YCbCr到RGB的转换,以达到提高转换速度,减少计算量,提高视频解码整体性能的目的。文中介绍的查表法兼顾了时间复杂度和空间复杂度。实验结果表明,该方法在嵌入式媒体播放软件中的优化效果非常明显。RBG colour space, YCbCr colour space and the conversion between them are introduced in this paper. Look- up table method is used when converting YCbCr to RGB in order to improve the speed of converting, reduce calculation amount and advance the performance of video decoder. The time complexity and space complexity are considered in this paper. An experiment is given to demonstrate the efficiency of the optimization in the embedded media player software.

关 键 词：YCBCR RGB 查表法 颜色空间 

分 类 号：TN919.8[电子电信—通信与信息系统]