[opendtv] Re: De-interlacing with HQV high quality video processing
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 6 Oct 2005 07:56:35 -0400
At 1:12 PM +0200 10/6/05, Jeroen Stessen wrote:
>- an all-progressive system can show the same interlace
> artefacts at its own critical (vertical motion) speed.
I will agree that there can be issues with vertical movement and the
positioning of edges when the actual source is located between the
lines of the samplng grid. But this is NOT an interlace artifact. We
are talking about sampling artifacts.
These artifacts SHOULD NOT be visible if the proper filtering is
applied prior to sampling. If, on the other hand, you reduce the
filtering to allow higher frequencies to pass through you will see
sampling artifacts.
Very different. I see interlace artifacts all the time on both 480i
and 1080i sources. I never see similar artifacts with 720P sources.
Regards
Craig
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