[opendtv] Re: Spam Filter?
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 10 Jan 2005 22:36:40 -0500
At 11:40 AM -0500 1/10/05, Cliff Benham wrote:
>I think there may be a bit of confusion here.
>The artifacts being discussed are not caused by interlace per se, as in =
>1080i.
>
>They are due to less than perfect 'de-interlacing circuitry' in the TV.
>I.E., the artifacts in the 'now progressive scan' image are caused by =
>the=20
>inability of the circuitry to deinterlace properly.
Good point Cliff, but I would modify your sentence slightly.
The interlace artifacts on progressive displays are due to the less
than perfect sampling of the interlaced camera. This makes it
virtually impossible, in MANY cases, for ANY kind of de-interlace
processing to accurately predict the missing samples, resulting in
errors in the presented samples that are perceived as image artifacts.
Regards
Craig
I would also note that interlace artifacts are OFTEN highly visible
on 1080i displays when presenting 1080i source.
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