Calibration method of pick up camera or photographic camera geographic distortion

A geometric distortion and camera technology, which is applied in image enhancement, image data processing, instruments, etc., can solve problems such as calibration and distortion physical sources are not clear, camera or camera geometric distortion is not easy, etc., to achieve the effect of improving quality
CN1719477AInactive Publication Date: 2006-01-11SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2006-01-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention relates to a calibration method of geometric distortion of pickup camera or photographic camera. Said method includes the following main steps: firstly, creating coordinate conversion relationship between ideal imaging plane and actual imaging plane and between actual imaging plane and pixel coordinate system, collecting calibration image, extracting image point on straight line, making coordinate conversion and adopting other measures, and utilizing optimization principle to obtain the geometric distortion parameter of pickup camera or photographic camera. Said method can be used for geometric calibration of pickup camera or photographic camera, standardization of pickup camera and their assembled quality inspection.
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Description

technical field

[0001] The invention relates to a method for calibrating geometric distortion of a video camera or a camera, which can be applied to geometric calibration of images taken by a video camera or a camera, camera calibration in computer stereo vision, and quality inspection of video camera or camera lens processing and assembly. It belongs to the field of advanced manufacturing and automation. Background technique

[0002] Due to various errors of the camera or camera during component processing and assembly, the captured image has geometric distortion. This geometric distortion not only affects the visual effect of the image, but also affects the camera calibration accuracy in computer stereo vision. Therefore, the calibration of video camera or camera geometric distortion is an important issue in image processing, computer stereo vision, and video camera or camera manufacturing and inspection.

[0003] At present, there are two categories of methods for camer...

Claims

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