I need to understand that how calibration works for cameras. I do not have basics good enough. Can someone please help me in understanding that how can I apply calibration data to an image taken with a camera for which I already have the calibration matrices such as Camera Matrix, Rotation and Translation matrix, and Distortion Matrix. I got all these using opencv, but I really do not understand how it works. Reading some tutorials helped but still not good enough. Please Please Please help me!!!!!!!!!!! Thanks in advance, Sumit
image calibration manually with transformation matrices from OpenCV
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It depends on what you are trying to do. You can use the calibration parameters to remove lens distortion from an image. With a single calibrated camera you can measure planar objects, or you can do 3-D reconstruction from multiple images, assuming you know the extrinsics. With a calibrated stereo pair of cameras you can do 3-D reconstruction more easily.
I am not sure what you mean by "manually". Generally, this is a rather broad topic, which cannot be explained in a few paragraphs. I would recommend you start with the "Learning OpenCV" book by Bradski and Kaehler.