Quote:
Originally Posted by TEOL
So basiclly TV scanlines are oval rather than horizontal and Console/Computer scanlines are vertical both together making a real scanlines picture which it's what I gather from the picture.
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I'm afraid the "circular wave pattern" in the photo does not represent real scanlines on CRTs/TVs. This pattern shows up in the digital picture because the picture has too low resolution to represent the complex/real pattern on the TV screen. This is an
aliasing effect (see
Moiré_pattern), and the person taking that picture would not see that pattern when looking at the real TV screen.
So this photo should not be used as basis for creating a scanline shader
Btw, you'll also see similar problems in TV broadcasts if a person in a TV studio has a sweater with a detailed checkered pattern, for instance.