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Re: Color Reference of NTSC Formula?
- Subject: Re: Color Reference of NTSC Formula?
- From: Mark McDougall <markm@vl.com.au>
- Date: Tue, 01 Aug 2006 11:33:25 +1000
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Bryan Parkoff wrote:
> It is only a question why Deep Red appears in the left of this pixel.
This goes back to my earlier post.
I believe artifacting like this occurs because the phase change is
limited to +/- 90 degrees. So you can't get from one side of the colour
wheel to the other (180 deg shift) in a single pixel - it takes two
pixels to get there. Hence the colour of the artifact is half-way
between the previous pixel and the next on the colour wheel. In effect
its colour is totally dependent on the pixels either side of it.
Regards,
--
Mark McDougall, Engineer
Virtual Logic Pty Ltd, <http://www.vl.com.au>
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266