| 摘要 |
There is disclosed an image lens distortion correcting method comprising: an image printing step (A) for printing an arbitrary image I1 in a computer; an image pickup step (B) for photographing the printed image I1 with a camera having a lens distortion and obtaining a photographed image I2 in the computer; a parameter estimating step (C) for obtaining a parameter theta such that the image I1 is artificially distorted with the parameter theta and an obtained distorted image I1ud equals with the photographed image I2; and an image correcting step (D) for using the obtained parameter theta to correct the image photographed by the camera. Thereby, (1) no correspondence point needs to be given, (2) any special tool or object is not used, and (3) all points on the image are used, so that an internal parameter can automatically be obtained with high precision, and an image lens distortion can be corrected with high precision.
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