Projective Camera Parameters

The image of a projective camera can be described in terms of its 11 intrinsic and extrinsic parameters. The intrinsic parameters affect how the image is seen on the image plane once it has entered the camera. These are unique to individual cameras and include:

Even with the manufacturer's specifications in hand, these parameters need to be found experimentally as cameras of the same model often vary slightly. Together these parameters form the camera calibration matrix K.

The extrinsic parameters of a camera, on the other hand, are not unique to any given camera. These relate how a camera's orientation and position within world coordinates:

The intrinsic and the extrinsic parameters define a camera's projection matrix P:



[1] Hartley, R., and Zisserman, A. Multiview Geometry in Computer Vision (2nd Ed). Cambridge University Press. 2008.

2011-03-29 17:43