As posted here, they have been restored and AI colorized. They are excellent examples of attempts to camouflage artillery by applying countershading (as proposed by American artist Abbott H. Thayer) and by breaking up the cannon's shape by applying high contrast disruptive patterns, such as stripes.
It is interesting to look at these in comparison to a series of five hand-drawn illustrations (as shown below) by WWII British army camoufleur and eminent zoologist, Hugh B. Cott, in Adaptive Coloration in Animals, which we have blogged about before.
RELATED LINKS
Dazzle Camouflage: What is it and how did it work? / Nature, Art, and Camouflage / Art, Women's Rights, and Camouflage / Embedded Figures, Art, and Camouflage / Art, Gestalt, and Camouflage / Optical science meets visual art / Disruption versus dazzle / Chicanery and conspicuousness / Under the big top at Sims' circus
