[opendtv] Re: [Fwd: Re: Re: Math of oversampling - corrected links
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 29 Apr 2005 19:15:30 -0400
Some of the links listed below were broken, now fixed.
- Tom
Tom Barry wrote:
>
> Jeroen Stessen wrote:
>
>> Original: 1920x1080p (cropped from a 2126x1417 original still image).
>> There are 4 scaled versions: via 1280x720, 1024x576, 832x468, 712x400.
>> These 5 pictures should give you a good idea of the continuum of
>> sharpness as a function of the down-sampling ratio. As always, the
>> bandwidth is limited to -3 dB at 73% of the Nyquist limit of the down-
>> sampled (intermediate) image, except for the original 1080p image.
>
>
> Hey, great new series. These are now posted at:
>
> www.trbarry.com/Philips_home_1080p.jpg
> www.trbarry.com/Philips_home_720p.jpg
> www.trbarry.com/Philips_home_576p.jpg
> www.trbarry.com/Philips_home_468p.jpg
> www.trbarry.com/Philips_home_400p.jpg
>
> These allow everyone to better measure the possible costs of
> various lower transmission resolutions. I guess the best way to
> proceed is first compare the extremes 1080p vs 400p and get a feel
> for what to look for. Then iterate through them all and see how
> and where quality does or doesn't degrade by this process.
>
> Since we will all likely be using 1080p displays someday these are
> maybe some good examples of what to expect.
>
> - Tom
>
>
>
>
>
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