Look, the snow swirling around the doll, a moment to ask tree uncle body is still hale and hearty, say hello to fish for a while go to the ice lens there, then fly to children, play with a friend.

The principles and experiments of close range photogrammetry by using a general camera with a fish eye lens are presented.

Novel techniques, such as a fish-eye lens used to obtain a 360-degree field of view without the need of focus adjustment, have recently been investigated and proved very useful in mobile robots.