A camera calibration using four point-targets

摘要

A method for determining the position of a camera using fourpoint-targets is studied. three rotation angles and a translation vectorare used to describe the position of the camera for a pinhole model. Forsolving the six unknown parameters, a minimum of six point-targets isrequired to define the matrix uniquely (rotation and translation).However, it is shown that by using the properties of the matrix thisnumber can be reduced to four. The error properties of this method arediscussed using real image data