Field-related distortion calibration method of photogrammetric camera
A distortion calibration and photogrammetry technology, applied in image data processing, instruments, calculations, etc., can solve problems such as neglect, achieve the effect of ensuring measurement accuracy, eliminating system errors, and simplifying the calibration process
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[0036] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below, and may be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.
[0037] The invention studies the model of the distortion parameter of the imaging point caused by the change of the object distance, and proposes a method for calibrating the distortion model in a more general defocus state, aiming at the industrial measurement camera in the fixed focus state.
[0038] The object to be measured in the present invention has a large volume and a large depth range in the direction of the optical axis of the camera, and target points at different distances have different distortion parameters on...
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