Hi Yuriy,
Hey, cool screenshot! 8)
When you select a target view, LRGBCombination allows you to select only grayscale channel images with the same geometry (width, height) as the target view. That's why in your example, Image10 doesn't appear on the channel selection dialog: it is a RGB image. This is also the reason to implement LRGB channel selection as a separate dialog box, instead of a regular view selection combo box: with a view selection c.b. we have no way to filter out images as a function of their geometries and/or color spaces.
If you select no target view, then LRGBCombination's interface will allow you to select any grayscale images, without checking their geometries. However, if some of the L, R, G or B images have incompatible geometries when you execute the LRGBCombination instance, you'll get a runtime error.
Does this explain what you're experiencing?
