Rose-Hulman Robotics Team

software/camera-calibration

Camera Calibration

In order to do useful things with the camera we need to know certain information about it, like focal length. We use the Camera Calibration Toolbox for Matlab to do this.

Calibration Data

This calibration went rather poorly, giving a rather high error.

Focal Length:          fc = [ 2200.72265   2199.06319 ] +- [ 12.37268   12.66289 ]
Principal point:       cc = [ 1343.73543   1014.71811 ] +- [ 14.80554   20.62470 ]
Skew:             alpha_c = [ 0.00000 ] +- [ 0.00000  ]   => angle of pixel axes = 90.00000 +- 0.00000 degrees
Distortion:            kc = [ -0.34554   0.17020   0.00034   -0.00050  0.00000 ] +- [ 0.00638   0.01080   0.00083   0.00067  0.00000 ]
Pixel error:          err = [ 1.78527   0.99664 ]

This calibration data produces the following results:

Example of image undistortion

Attachments