add missing dependency
add cv_bridge dependency
remove broken test
Added the possibility to set more calibration flags: number of coefficients, fixed ratio...
Calibration from tarfile shows now the rectified images. To check calibration easily. Added alpha parameter to zoom in/out
Bit of clean up
Depends now only on cv2. Added extra option to visualize or not rectified images, default not.
Fxed little bug closing windows