Ultrawide-angle image rapid distortion correction method
A distortion correction, ultra-wide-angle technology, applied in the field of image processing, can solve problems such as large amount of calculation, no camera parameter conditions, different photos from different sources, etc., to achieve the effect of good correction effect and low computational complexity
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[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] The longitude correction algorithm was first proposed by Mundhenk, which is a typical 2D image correction algorithm. This algorithm mainly uses the spherical meridian to approximate the distortion of the fisheye image based on the imaging characteristics of the fisheye lens. The longer the longitude, the more twisted it is. Its warped scene can be used with figure 1 Longitude, that is, all pixels on a longitude have the same column coordinate value in the distortion-corrected image, such as figure 1 (a) in a(x a ,y a ) and b(x b ,y b ) on the same longitude curve, the correction points corresponding to the points on the longitude curve are all on the straight line L, record a(x a ,y a ) and b(x b ,y b ) points corresponding to the correction points are a'(x',y a ) and b′(x′,y b ), we can see that point a(x a ,y a ) and its correction point a′(x′,y ...
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