Fisheye image correcting method for image stitching

A technology of fisheye image and correction method, which is applied in the field of image processing, and can solve the problem of not considering the pitch angle of fisheye image, affecting the stitching quality of panoramic images, and poor flatness, etc.
CN102222337AInactive Publication Date: 2011-10-19CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2011-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a fisheye image correcting method for image stitching. The method corrects two fisheye images partially overlapped with each other through a computer, and finds out a splicing angle of stitching caused by pitch angles during shooting between the two fisheye images by adopting an unique correction principle and utilizing matched pixels in the two fisheye images so as to obtain the pitching angle formed during the shooting of the two fisheye images through backstepping; and the method also avoids adverse impacts, such as inclination, ghosting, and the like, of errors of the pitch angles formed during the shooting on the panorama stitching of the fisheye images through pitching conversion mapping treatment, and has the advantages of better robustness and high accuracy in computation.
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Description

Technical field

[0001] The invention belongs to the technical field of image processing, and in particular relates to a fisheye image correction method for image splicing. Background technique

[0002] In many image processing fields such as panoramic display, landform acquisition, virtual reality, etc., it is usually required that the angle of view of a single photo is as wide as possible, so as to use less image resources and shorter time to complete image data collection and processing. Fisheye images, that is, images taken with fisheye lenses, have a wide field of view. Depending on the fisheye lens, the maximum viewing angle of fisheye images can reach 180° or even 220°, so it has been widely used in many fields. Especially in the field of panoramic image acquisition.

[0003] In the field of panoramic image acquisition, taking advantage of the large angle of view and wide field of view of fisheye images, panoramic images can be obtained by shooting a few fisheye images. Tak...

Claims

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