I love mathematical manipulation a of images, eapwcially finding "difference"!
I feel that differences can sometimes tell us much more than looking at everything. In g
Fact a great British physician, Pappenheimer exhorted doctors to learn "in what way does this pain in the knee differ from all other pains in the knee!
If we really understood insect vision, we would know so much more of their needs and beahavior!
Asher