Airy points

Airy points are special points within a picture, taken by a camera, that are used to help map out where the camera is located in a 3D space. Think of them like invisible dots, that your camera can "see". Think of a dot-to-dot game, where you have to connect the dots and the picture that you create will be the image taken by your camera. Airy points are used to help computer programs create 3D images and maps, since they can use the dots to figure out where everything is in the 3D world.