Fisheye lens image correction method and device

A fisheye lens and fisheye image technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve problems such as correcting image distortion, and achieve the effect of solving serious distortion

Active Publication Date: 2018-06-19
SAIC MOTOR
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  • Claims
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Problems solved by technology

[0004] The present invention provides a fisheye lens image correction method and device to overcome the problem in the prior art that the corrected image based on fisheye lens calibration may be seriously distorted

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  • Fisheye lens image correction method and device
  • Fisheye lens image correction method and device
  • Fisheye lens image correction method and device

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Embodiment Construction

[0018] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0019] figure 1 It is a schematic flowchart of an embodiment of a method for correcting a fisheye lens image of the present invention. figure 2 It is a schematic diagram of the relationship between the fisheye lens coordinate system and the fisheye image plane coordinate system. Such as figure 1 As shown, the method of this embodimen...

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Abstract

The invention provides a fish-eye lens image correcting method and device. The fish-eye lens image correcting method comprises the following steps of obtaining a model parameter of a fish-eye lens imaging model according to a calibration image collected by a fish-eye lens; determining the effective view angle range of the fish-eye lens according to the model parameter and the preset constraint condition; and correcting the fish-eye lens image collected by the fish-eye lens in the effective view angle range to obtain the corrected fish-eye lens image. The method and the device have the advantage that the distorted fish-eye lens image can be restored into a perspective image meeting the human eye visual effect.

Description

Technical field [0001] The present invention relates to the technical field of digital image processing, in particular to a method and device for correcting fisheye lens images. Background technique [0002] A fisheye lens is an ultra-wide-angle lens. The angle of view is usually 180 degrees or more. The lens has a short diameter and protrudes parabolicly toward the front of the lens. It is similar to the eyes of a fish, hence the name fisheye lens. Fisheye lenses are widely used in the fields of video surveillance, virtual reality, three-dimensional modeling, and visual navigation. However, the fisheye lens images the hemispherical object surface as a plane, so the images taken by the fisheye lens are severely distorted and the visual perception is very unnatural. Therefore, these distorted images need to be corrected to the perspective projection images that people are used to. [0003] In the prior art, a fisheye lens calibration algorithm can be used to restore image distortio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/006G06T2207/20172
Inventor 江水郎郑新芬冯津曹昉旻
Owner SAIC MOTOR
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