The basic camera model is a pinhole camera, though the real-world cameras that we use are far more complex models. A pinhole camera is made up of a very small slit on a plane that allows the formation of an image as depicted in the following figure:
This camera converts a point in the physical world, often termed the real world, to a pixel on an image plane. The conversion follows the transformation of the three-dimensional coordinate to two-dimensional coordinates. Here in the image plane, the coordinates are denoted as where , Pi is any point on an image. In the physical world, the same point is denoted by , where Pw is any ...
