Also, a lot of what we think of as vision happens in "software." A human looking at a human processes that information differently to a dog looking at a human.

Also, a lot of what we think of as vision happens in "software." A human looking at a human processes that information differently to a dog looking at a human. Human's read faces, for example. To a human it seems that a lot more information is lost in the from the face part of the image than the hands area when you put it through that filter.