[opendtv] Re: Math of oversampling - a simple comparison

Hi, 

Craig: 
> What I believe we are dealing with here is the relationship between 
> the visual acuity of the viewer and the ability of any sampling grid 
> to equal or surpass that level of acuity. 

But... we can't discuss each other's visual acuity, because 
we don't know the viewing distance of the other person ! 
The only thing that is not variable is the original image 
content, so I would have to go with Tom's theory that we are 
reaching a cutoff frequency where the image content begins 
to be significant. And since this is just an arbitrary image, 
and not too well focussed according to Doug, it can only be a 
coincidence that this cutoff happens between 480 and 544 lines. 

> If Tom and Jeroen have time to play, I would like to see a 
> down/up sample pass through 1024 x 576P. My educated guess is 
> that it will be nearly impossible to see the difference from 
> the original.

I will generate it immediately, and mail it to Tom and Craig 
(oh, and to Bob Miller too). 

Cheers, 
-- Jeroen 

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