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Method and apparatus for improving image joint accuracy using lens distortion correction

A distortion correction and accuracy technology, applied in image communication, color TV parts, TV system parts and other directions, can solve problems such as difficult compensation and modification, the rotation plane cannot accurately convert the reference plane, and the conversion matrix is ​​inaccurate. , to achieve the effect of improving the joint accuracy

Inactive Publication Date: 2007-10-31
SONY TAIWAN
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Problems solved by technology

This deviation causes the transformation matrix calculated from the distorted points to be inaccurate, and the rotation plane cannot be accurately transformed to the reference plane, so that the features of the transformed image do not match those of the reference image in overlapping regions
This mismatch is difficult to compensate for
[0008] In view of the above problems, the present invention proposes a lens distortion correction method for the system to solve the problem that the features in the overlapping area of ​​multiple images cannot be matched, and improve the accuracy of wide-angle image joining to produce seamless wide-angle images

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[0026] The present invention will be described in detail below in conjunction with the drawings and specific embodiments. Wherein, in order not to confuse the technical features of the present invention with known details, some specific details will not be repeated in the following description.

[0027] Referring to FIG. 4, there is shown a multi-eye camera system 400 according to the present invention. The multi-eye camera system 400 includes a camera array 401, an image stitching engine 402, an optional aperture controller 403, and a lens distortion correction mechanism 404, wherein the lens distortion correction mechanism 404 can use any available lens distortion correction algorithm. Taking the polynomial method as an example, the coefficients of the polynomial are calculated to fit the curve of the lens data. These coefficients are stored as lens parameters, and distortion correction is performed by applying a polynomial to each pixel to map each pixel to an undistorted ...

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Abstract

The invention provides an image switching accuracy improving method and device which is used for multi-camera system which can produce wide-angle image. The distortion of lens will make the overlap area photographed by multi-camera not accord with the characteristics, so, the gap of combined wide-angle images can be seen. The image switching accuracy improving method and device provided by the invention proofreads the distortion of lens, and makes the characteristics in overlap area accord with it and jointing engine can produce the seamless wide-angle image easily.

Description

technical field [0001] The present invention relates to improving the stitching accuracy of wide-angle images generated from multi-eye camera systems. Background technique [0002] As the well-known U.S. Patent Publication Nos. 2003 / 0235344 A1 and 2005 / 0025313 A1 for generating wide-angle images from a multi-eye camera system, systems for generating seamless wide-angle images using image joining techniques are disclosed; Image stitching issues caused by lens distortion. The wide-angle imaging system utilizes features in overlapping regions of images to search for junctions and calculate image transformation parameters. Due to lens distortion, features in the overlapping region are distorted and do not match the adjacent image. In the stitched wide-angle image, this mismatch creates seams that cannot be easily corrected. [0003] Referring to FIG. 1 , it shows a known multi-eye camera system 100 including a camera array 101 and an image stitching engi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N1/387
Inventor 潘积桂光下辰己林旭婷郭恕铭
Owner SONY TAIWAN
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