[opendtv] Re: Is it p or i
- From: cbenham@xxxxxxxxxxx
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 14 Sep 2005 18:00:34 +0000
Hello Jeroen,
Is the effect of this 45 degree interlace anything like the simultaneous
horizontal and vertical interlace CBS tried with their field sequential color
system in 1952?
> Hello,
>
> Bert asked:
> > So, is this sort of analogus to 1920i X 1080p, or 1280i X
> > 720p? It just seems like interlacing rotated by 90 degrees.
>
> It is interlacing rotated by 45 degrees ! First the pixels have
> been put on a 45 degrees rotated grid, and then some horizontal
> (or vertical, I forgot) motion is applied to make a second grid
> that falls between the first, and it becomes an orthogonal grid.
> This makes it easier to render traditional computer graphics.
>
> I learned this at this year's SID. I can look it up, if you like.
> They call it "wobbulation". I said: "interlace by any other name
> is still interlace". I don't think the speaker liked me... ;-)
>
> Best,
> -- Jeroen
>
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