Flexible camera calibration by viewing a plane from unknown orientations

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Flexible camera calibration by viewing a plane from unknown orientations (1999)

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by Zhengyou Zhang

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511 - 7 self

BibTeX

@MISC{Zhang99flexiblecamera,
    author = {Zhengyou Zhang},
    title = {Flexible camera calibration by viewing a plane from unknown orientations},
    year = {1999}
}

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Abstract

We propose a flexible new technique to easily calibrate a camera. It only requires the camera to observe a planar pattern shown at a few (at least two) different orientations. Either the camera or the planar pattern can be freely moved. The motion need not be known. Radial lens distortion is modeled. The proposed procedure consists of a closed-form solution, followed by a nonlinear refinement based on the maximum likelihood criterion. Both computer simulation and real data have been used to test the proposed technique, and very good results have been obtained. Compared with classical techniques which use expensive equipment such as two or three orthogonal planes, the proposed technique is easy to use and flexible. It advances 3D computer vision one step from laboratory environments to real world use. The corresponding software is available from the author’s Web page.

Keyphrases

flexible camera calibration unknown orientation planar pattern expensive equipment good result corresponding software flexible new technique real data orthogonal plane computer vision computer simulation closed-form solution nonlinear refinement classical technique proposed procedure different orientation maximum likelihood criterion laboratory environment author web page radial lens distortion real world use

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