Image generation method of fish eye lens based on outer parameter correction

Abstract

The invention provides an image generation method of fish eye lens based on outer parameter correction, and an original plane model used for imaging. The method comprises steps of carrying out view field spherical surface model establishing: establishing corresponding view field spherical surface model of each pair of fish eye lenses according to an initial inner parameter; carrying out outer parameter correction: determining the same second feature points to be in a homonymous group in a reference view field spherical surface model, calculating a deviation distance between second feature points in each homonymous group and correcting the initial outer parameter of each fish eye lens until the sum of the deviation distances of all homonymous groups is the smallest so as to obtain the corrected outer parameters; and carrying out panoramic imaging: according to the corrected inner parameters and the corrected outer parameters, projecting images acquired by each fish eye lens in the reference spherical surface model so as to obtain panoramic images.

Description

technical field [0001] The invention relates to an image processing method, in particular to an image generation method based on external parameter correction fisheye camera. Background technique [0002] Panoramic video is a low-cost virtual reality technology based on image stitching technology, and it is a research hotspot in the field of virtual reality and computer vision technology. Panoramic stitching technology, as a cheap and intuitive implementation method, has been widely used in many fields, such as VR / AR, video shooting, video surveillance, real estate, decoration design, tourist attractions, virtual campuses, street view services, etc. market demand. In order to shoot larger and more complete high-definition panoramic images, panoramic cameras are usually composed of more than two cameras to cover a full range of viewing angles. Most consist of fisheye cameras. [0003] To generate a panoramic image, it is necessary to stitch together the original images col...

AI Technical Summary

Problems solved by technology

[0003] To generate a panoramic image, it is necessary to splicing the collected original images through several fisheye cameras. If splicing is to be realized, the precise internal parameters and external parameters of each fisheye camera must be obtained; However, due to the limitations of industrial manufacturing technology, the relative pose relationship between cameras cannot meet the accurate alignment requirements of the theoretical value of the pose relationship between cameras. Stitching of acquired video images will produce obvious misalignment and ghosting

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