calibration parameters results(camera.cfg)physic meaning?

[haoweix]

my calibrator.launch is ubstable. So I want to use calib tools in matlab to do the calibration. I see there are 5 parameters in the camera.cfg file. I want to know the physic meaning of each parameter.

Thank you in advance!

[liu-zg15]

I think the parameters is
fx/image_width, fy/image_height, cx/image_width, cy/image_height, d.
fx is focal length in x.
fy is focal length in y.
cx is camera center in x.
cy is camera center in y.
d is distortion factor.
Hope this will be helpful.