[opendtv] Re: De-interlacing with HQV high quality video processing
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 05 Oct 2005 11:46:55 -0400
I agree.
When I was first shown the Teranex prototype, they used the classic
"Calendar & Train" sequence to demonstrate their deinterlacing, and they
pointed to the sheep on the wall as being properly deinterlaced. I
pointed to the chrome toy as still showing interlace artifacts. The
Teranex technical staff said, in effect, "Well, no deinterlacer can be
perfect."
TTFN,
Mark
Craig Birkmaier wrote:
>I was a consultant to Teranex for a period of time in the late '90s.
>We had MANY discussions about the difficulty in doing good
>de-interlacing. Let's just say that it is an imperfect science at
>best.
>
>Teranex was purchased by Silicon Optix last year after several years
>of working together to develop the chip you refer to. It is a
>spectacular product! But it is not perfect.
>
>Any time you want to do a shoot-out between a native 720P camera and
>a 1080i camera at 50/60 Hz, then compare the images after the 1080i
>has been converted to 720P , using the VERY BEST de-interlacing
>technology available, I'm ready to be proven wrong.
>
>THERE IS NOT SUBSTITUTE FOR PROPER SAMPLING IN THE FIRST PLACE.
>
>Spatio-temporal undersampling is a crude form of image compression.
>It has no legitimate place in a modern television system, with the
>possible exception of cheap displays.
>
>Regards
>Craig
>
>
>
>
>
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