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Geometric Camera Calibration - The GEOCAL method 6 месяцев назад


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Geometric Camera Calibration - The GEOCAL method

In this webinar, we discuss the traditional methods of geometric camera calibration such as using checkerboard test charts. We then present GEOCAL, a new method for geometric camera calibration. GEOCAL is a compact device that uses a beam-expanded laser and a diffractive optical element to generate a grid of light spots originating from infinity. What are the main characteristics of GEOCAL? Ability to generate a regular grid of light spots originating from infinity Measure geometric distortion, focal length, and principal point The camera position is translation invariant (to a certain extent) Easily manage the angle of camera rotation No relay lens required A very compact design Calibrate large field-of-view cameras Stereo camera alignments and adjustments Remove lens distortion using GEOCAL and OpenCV

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