 active camouflage or adaptive camouflage is camouflage that adapts, often rapidly, to the surroundings of an object such as an animal or military vehicle. in theory, active camouflage could provide perfect concealment from visual detection. active camouflage is used in several groups of animals, including reptiles on land, and cephalopod molluscs and flatfish in the sea. animals achieve active camouflage both by color change and (among marine animals such as squid) by counterillumination, with the use of bioluminescence. military counterillumination camouflage was first investigated during world war ii for marine use. more recent research has aimed to achieve crypsis by using cameras to sense the visible background, and by controlling panels or coatings that can vary their appearance. ==definition== thumb|upright|left|illustrating the concept: active image capture and re-display creates an "illusory transparency", also known as "computer mediated reality" or "optical camouflage" active camouflage provides concealment either by making an object not merely generally similar to its surroundings, but effectively invisible through accurate mimicry, and by changing the appearance of the object as changes occur in its background. == in research == active camouflage has its origins in second world war studies of counter-illumination. the first of these was the so-called diffused lighting camouflage tested on canadian navy corvettes including hmcs rimouski. this was followed in the armed forces of the united states of america with the airborne yehudi lights project, and of the united kingdom. the yehudi lights project placed low-intensity blue lights on aircraft. as night skies are not pitch black, an unilluminated aircraft (of any color) might be rendered v
Camouflage Military_camouflage Military_electronics