I consulted some seniors in the group and summed it up: First of all, stripes are different. Before looking for the map, I think the texture distribution of the two is similar. I found two pictures and found a big difference. The black and white stripes of zebra are dense, and the distribution law is very strange. In the sun, it will blur the outline and look dizzy (try staring at the front of it for dozens of seconds). The black and white stripes on the prison uniform are widely spaced, so they are not dizzy and easy to identify. The chances of prisoners fleeing collectively are very small (because there are few talents like Michael in Prison Break). There is usually only one when they escape, and they are dressed strangely, and no one is caught.