Method, device and electronic equipment for determining distortion parameters of curved lens

Abstract

The embodiment of the invention discloses a method and device for determining a camber lens distortion parameter and electronic equipment. The method comprises the steps that at least three first pictures, with different angles, taken at a first position by rotating a camber lens based on a fixed shaft are obtained, and at least three collecting areas corresponding to the at least three first pictures are provided with identical first collecting subareas; at least three first feature points corresponding to first feature objects in the first collecting subareas are determined in the at least three first pictures; arcs corresponding to the at least three feature points are matched, and a distortion center is obtained; a second picture taken through the camber lens is obtained at a second position different from the first position, and a collecting area corresponding to the second picture is provided with a first collecting subarea; second feature points corresponding to the first feature objects are extracted from the second picture, and the distortion parameter of the camber lens is determined based on the distortion center, the first feature points and the second feature points.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method, device and electronic equipment for determining distortion parameters of a curved lens. Background technique [0002] With the continuous development of science and technology, computer vision processing has been widely used in more and more fields. Curved lenses such as fisheye lenses, wide-angle lenses and catadioptric lenses are more and more widely used in various fields. Taking eye-eye lenses as an example, fish-eye cameras are widely used in video surveillance, robot navigation, and 3D reconstruction because they usually have a very large field of view. [0003] However, while the field of view is enlarged, the image obtained through a curved lens such as a fisheye lens will be very distorted at the same time. It is shown that the closer the image is to the outer edge of the image, the greater the degree of distortion, which in turn causes the curved lens to be use...

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method, device, and electronic equipment for determining distortion parameters of curved lenses to solve the existing technologies in the prior art that have high requirements for calibration images when determining the distortion parameters of curved lenses such as fisheye lenses question

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