On Apr 3, 6:25*am, "praveen.264" <kpk_...@yahoo.co.in> wrote:
> Hi friends !
>
> Iam trying to project the performance of our video processing algorithm
> objectively in terms of PSNR and SSIM. We are dealing with YV12 videos. Iam
> using the MSU Video Quality measurement tool to compute the PSNR and SSIM
> values. Here they give the options to compute the values for Y-componet
> alone (and average for all the Y frames), U componet alone (and average for
> all the U frames),V componet alone (and average for all the V frames.
>
> My question here is which value should I take into consideration (Y, U or
> V?? or the average of Y,U,V values??) for comparing with unprocessed video?
>
> to summarize,
>
> what will be correct PSNR for a YUV video - *Y component PSNR, U component
> PSNR or V component PSNR or the average of the three?
>
> Pls give ur valuable inputs..
>
> Thanks in advance,
> Praveen

There is no one answer that is "correct". I have seen much literature
in the video compression community where the Y PSNR is the primary
metric, and the others are ignored, or assumed to follow fairly
closely. If you wanted conservative results, you could use max of
Y,U,V. But there's certainly no reason you can't average them either.
If on the other hand you're try to compare against some other
published literature, you should do exactly what they do to make the
comparison more fair.

- Kenn