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But what is the need to put it into one number?
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I'm in a project and at this step I have to calculate PSNR values for different codecs to compare video quality.But when I penetrate to subject,different parameters was appeared like yuv rgb.I just want to learn-Which color space (yuv or rgb or yCbCr) will reach me to the best conclusion for my test videos (All test videos yuv 4:2:0 subsampling like in the picture).Everyone offers yuv color space because of luma compenent but When I try to analyses video in Matlab,it converts yuv color space to rgb so I decide to reconvert each pixel's rbg value to YUV as a one number pixel value.Is this illogical??
If the answer is yes I ask this question again to do with Avisynth because matlab seems useless.
Which color space and script (yuv or rgb or yCbCr) will reach me to the best conclusion for my test videos to compare different codecs??.
Thanks again