Falsecolor: imshowpair . What do the colors mean?

What do the green and magenta mean? Does the green mean an increase/decrease in gray value?

Answer 1

[Image Analyst]

Yes, but really, greener means it's more like the one image of the superimposed pair, and more magenta means the superimposed image is more like the other image.

[Monika Dash]

I did not really understand your answer. If I write imshowpair(A,B); do you mean that the green means what is different in A and B means what is different in B?

[Image Analyst]

This is what the documentation says:

'ColorChannels' — Output color channel for each input image
‘green-magenta' (default) | [R G B] | ‘red-cyan'

So it puts image A into the green channel, and it puts image B into the red and blue channels. So if A is bright and B is dark, the image will look green there. If A is dark and B is bright in some region, then the image will look magenta there. If both are dark, the region will be dark. If both images are bright in some region, then all channels (green, and red and blue) will be bright and so the image will look light gray or white. Does that explain it? (If so, click "Accept this answer".)