[opendtv] Re: Math of oversampling - a simple comparison
- From: Doug McDonald <mcdonald@xxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sat, 23 Apr 2005 11:22:40 -0500
Tom Barry wrote:
>And currently most HDTV does not really contain
> that much detail. I have included a link to a captured image from
> the Pilot of the Medium TV series. The LEFT half of that image
> was left untouched.
>
> But on the RIGHT half of the image I filtered out all frequencies
> that would correspond to a spatial resolution higher than a 1/4
> rez of 960x544,
That is simply a TERRIBLE image to compare on, nevertheless,
the right half shows a noticeable case of the dread edge engancement.
It is terribly out of focus for most of the image.
I suggest using a much better test: for example, Leno or one of the
better ABC sitcoms (e.g. Less Than Perfect) with a far shot,
or really good sports shots in 720p or 1080i.
Doug McDonald
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