Arent Fox LLP
Distortion correcting method, distortion correcting device, program recording medium and electronic camera
In a preparation operation of a distortion correcting method, actual measured lens position information obtained by an optical system at a time of shooting an image, an error range in the lens position information, and a relational expression between a distortion pattern and the lens position information, are respectively obtained. In a correcting operation, actual measured data of the lens position information is fit to the relational expression to estimate the distortion pattern of the image shot by the optical system, and a temporary corrected image is obtained. In a selection operation, a distortion correcting pattern to be applied in main correcting performed on the image is selected based on the temporary corrected image. In a repeating operation, when the distortion correcting pattern is not selected, a value of the actual measured data is adjusted within the error range and the correcting operation is repeated.
Nikon Corporation
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additional inventional inventional inventional inventional inventional inventional
Sadami Tsukasa
Okada Murata