>On Apr 3, 6:25=A0am, "praveen.264" <kpk_...@yahoo.co.in> wrote:
>> Hi friends !
>>
>> Iam trying to project the performance of our video processin
algorithm
>> objectively in terms of PSNR and SSIM. We are dealing with YV12 videos
I=
>am
>> using the MSU Video Quality measurement tool to compute the PSNR an
SSIM
>> values. Here they give the options to compute the values fo
Y-componet
>> alone (and average for all the Y frames), U componet alone (and averag
f=
>or
>> 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,
or
>> V?? or the average of Y,U,V values??) for comparing with unprocesse
vide=
>o?
>>
>> to summarize,
>>
>> what will be correct PSNR for a YUV video - =A0Y component PSNR,
compon=
>ent
>> 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
>

Thanks Kenn for the reply. I have been going through some literatures fo
reference. I could only find the term "Avg. PSNR" or "MSSIM" but no wher
clearly mentioned whether it is of Y, U ,V or avg of YUV. Can u pls let m
know what the standard practice is ? I am a newbie to this stuff.

Thanks

Praveen