[opendtv] Re: News: Intel introduces chips designed to improve Internet video quality
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 20 Nov 2007 12:42:12 -0500
Craig Birkmaier wrote:
> Note that there is no need for a 4:2:2 color space for progressive
> images.
Can you explain this?
I thought that 4:2:2 uses half the luminance bandwidth for Cb and Cr,
horizontally. And that 4:2:0 uses half the luminance bandwidth for
either Cb or Cr, where Cb and Cr are either alternating line by line or
centered between alternating lines.
I thought that 4:2:0 was especially well suited for interlaced images,
and 4:2:2 would be ideal for progressively scanned images.
Bert
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