Man pages matching name mia-2dgrayimage-combine-to-rgb in section 1:

mia-2dgrayimage-combine-to-rgb.1.en	debian 10 / mia-tools
mia-2dgrayimage-combine-to-rgb.1.en	debian 11 / mia-tools
mia-2dgrayimage-combine-to-rgb.1.en	debian 12 / mia-tools