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CCN is a 4x4 matrix that works like a color correction matrix, except there are four channels, R, G, B, IR, and the matrix is only intended to remove the IR intrusion into the visible light channels, and the visible light intrusion into the IR channel. For each pixel:
[RGBI_out] = [CCN] [RGBI_in]
The RGB-IR processing routine skips this step if the pixel's value is at or above to a saturation threshold. The threshold defaults to 85% of the maximum pixel value. You can set the threshold to 101% to make sure every pixel gets CCN processing.The plug-in does allow for manual adjustment of any of the 4x4 matrix entries.
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