What the imager has

Started Feb 11, 2014 | Discussions thread
MOD Kendall Helmstetter Gelner Forum Pro • Posts: 20,068
Re: The Quattro Knows

DMillier wrote:

This debate is interesting but a bit philosophical.

And would someone who thinks they know please explain how it is possible to discriminate colour properly when each group of 4 adjacent pixels shares exactly the same values for the 2nd and third layers and only the top value can vary.

Because you can use other nearby quads as lookup tables for exact values.  And once you have a fixed color for one pixel from the quad, you get closer to exact known values for the remaining three.  It only takes one quad with a constant color to get the correct value for every single pixel of that color in any other quad.

That would seem to severely limited the colour values that the 4 pixels can read. I'm still puzzled by this. Unless it is doing a Bayer like thing and measuring the values of additional pixels from different spatial locations and using these to infer the missing values (or something).

Not inferring.  It's a lookup.

And that's just one possibility.  Just think of it as a puzzle, the more you can figure out one part of the puzzle the more others fall into place.

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