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Image rectification method and relevant image rectification system

An image correction and relationship technology, applied in the field of image processing, can solve the problems of recognized images and unrecognized images

Active Publication Date: 2012-05-30
AVISONIC TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this type of lens can capture the scene in a relatively large viewing angle, the image formed by it is often accompanied by serious geometrical distortion. These geometrical distortions make it difficult for users to easily and clearly identify some details in the image, or even unrecognizable

Method used

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  • Image rectification method and relevant image rectification system
  • Image rectification method and relevant image rectification system
  • Image rectification method and relevant image rectification system

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Embodiment Construction

[0029] The ultimate goal of the image correction of the present invention is to reduce geometric distortion in an image to be corrected captured by a fisheye lens or a super wide-angle lens, so as to generate a corrected image. Wherein, before generating the corrected image, the frame size of the corrected image must be determined in advance (but still can be changed according to different requirements), and then the corrected image is divided into multiple corrected pixel blocks of the same size , and through the method of interpolation operation, the pixel value of each pixel in each corrected pixel block (ie: gray scale value) is generated one by one, and finally the corrected image can be output according to all calculated pixel values .

[0030]For example, the image correction of the present invention may pre-set the frame size of a corrected image as 640*480 pixels, and then divide the corrected image into 8*8 corrected pixel blocks of the same size. Therefore, Each of...

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Abstract

The invention provides an image rectification method and a relevant image rectification system, which can be used to perform rectification on an image captured by a fisheye lens or ultra wide angle lens, to reduce a geometric distortion phenomenon in the image, and can perform geometric adjustment on an image according to user's requirements. The invention enhances image rectification processing efficiency via a memory configuration technique.

Description

technical field [0001] The present invention relates to image processing, in particular to an image processing method and a related image processing system for correcting geometric distortion caused by a fisheye lens and an ultra-wide-angle lens. Background technique [0002] Fisheye lenses and super wide-angle lenses are widely used in surveillance cameras or general digital cameras. However, although this type of lens can capture the scene in a relatively large viewing angle, the image formed by it is often accompanied by serious geometrical distortion. These geometrical distortions make it difficult for users to easily and clearly identify Some details in the image are even unrecognizable. Therefore, the images generated by the fisheye lens and the ultra-wide-angle lens must undergo appropriate image processing techniques in order to restore an image that is more in line with the original scene, so as to facilitate the user's observation. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
Inventor 游启昌林盟淳陈宏铭
Owner AVISONIC TECH
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