Automatic camera calibration

Posted by srand on Stack Overflow See other posts from Stack Overflow or by srand
Published on 2010-03-23T17:17:04Z Indexed on 2010/03/23 17:43 UTC
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computer-vision

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camera-calibration

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calibration

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math

From Wikipedia, camera resectioning is the process of finding the true parameters of the camera that produced a given photograph or video. Camera resectioning is also known as geometric camera calibration.

Currently I am using Camera Calibration Toolbox for Matlab for my camera calibration. The toolbox returns calibration parameters such as focal length, principle point, skew, and distortion. However, the issue with this method is that it requires an extra step in calibrating the camera by using a special calibration object like a checkerboard. Additionally, it only works for one focus of the camera.

How can I get the calibration parameters without manually calibrating? For example, how does Microsoft's Photosynth perform camera calibration on its images?

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