[opendtv] Re: [oldvtrs] So Much for HDTV]

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 21 Aug 2008 19:46:36 -0400

Tom Barry wrote:

> I think decoder deblocking is fairly common, at least in software
> decoders like Xvid or DVD2AVI. They work best right in the decoder
> where they have access to the actual quantizer numbers used and so
> can make a fairly easy decision about how much to filter the edges
> of blocks.

I guess these deblockers are uncommon in existing DTVs, though? Or are
they not very effective? Seems like it shouldn't be an impossible task.
And momentarily making a very fast-moving part of the image less sharply
defined is something that human vision shouldn't mind so much, IMO.

Possibly too, this is one of those problem areas that the expertise of
cameramen will have to accommodate, sort of like judder in movies.

Bert
 
 
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