chroma PSNR is better than luma why?

[vijay]

Hi,

What could be the reason for chroma PSNR always better than luma PSNR?
Any references, links are welcome.

Thanks in advance,
Vijay.

[John Koleszar]

I don't think anyone has looked into the specific causes of this. I'd
agree that it looks like an opportunity though.

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[Pascal Massimino]

Hi Vijay,

On Tue, Apr 24, 2012 at 7:02 AM, vijay <vkumar...@gmail.com> wrote:

Hi,

What could be the reason for chroma PSNR always better than luma PSNR?
Any references, links are welcome.

i'd say it's because chroma planes inherently (by design) contains less information. So it's

harder to make large coding errors. It's also easier to predict with intra-coding prediction

modes.

[vkumar...@gmail.com]

Thanks.