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Image distortion rectifying method and system

An image distortion and image technology, applied in the field of image processing, can solve problems such as difficult mathematical model description, complex algorithm, etc., and achieve ideal correction effect, simple calculation, and strong self-adaptive ability

Active Publication Date: 2015-07-29
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Problems solved by technology

[0016] (3) The causes of distortion are various and affected by many factors, so it is difficult to describe it with a unified and fixed mathematical model;
[0017] (4) The algorithm is more complex

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  • Image distortion rectifying method and system

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0049] For an m×n picture, if it is a grayscale picture, each pixel corresponds to a gray value, and m×n pixels correspond to a point in an m×n-dimensional high-dimensional space; if it is a color picture, each The pixel points correspond to three data (respectively RGB components), and the m×n pixel points correspond to a point in a 3×m×n-dimensional high-dimensional space.

[0050] B...

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Abstract

The invention relates to the technical field of image processing, and provides an image distortion rectifying method and system. The image distortion rectifying method includes the steps: S1, distorting an original picture of a reference picture to obtain a distorted picture of the reference picture; S2, acquiring the position of each discrete point in the original picture and the position of each discrete point in the distorted picture; S3, subtracting the position of each discrete point in the original picture from the position of each discrete point in the distorted picture to obtain displacement vectors of the discrete points; S4, calculating a displacement vector field of a whole image of the reference picture by an interpolation method; S5, rectifying image distortion of the image needing to be rectified according to the displacement vector field. N discrete points are calibrated in the reference picture, and N is a natural number larger than or equal to 1. The image distortion rectifying method and system is simple in mode, high in adaptivity and fine in rectifying effect.

Description

【Technical field】 [0001] The present invention relates to the technical field of image processing, in particular to an image distortion correction method and system. 【Background technique】 [0002] Image distortion is a problem often encountered in image processing. For example, in order to obtain a wider angle lens, a wide-angle lens, that is, a fisheye lens, is often used to take pictures. However, the photos taken with a fisheye lens will produce serious image distortion. Image distortion is very unfavorable to image processing and analysis, and image distortion needs to be corrected. [0003] Existing typical methods for image distortion correction include high-order polynomial model methods and division model methods. Here is a brief introduction to these two methods: [0004] 1. High-order polynomial model [0005] This method assumes that the distortion function is continuously differentiable, so that the distortion function can be expanded by Taylor. The formula o...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 王守觉蒋泳森胡志峰
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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