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Method for improving image contour precision

An image contour and accuracy technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as insufficient anti-interference ability, and achieve the effect of speeding up processing speed and improving accuracy

Inactive Publication Date: 2019-10-11
张杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the anti-interference ability of the existing image contour extraction method is insufficient, and the purpose is to provide a method for improving the accuracy of the image contour to solve the above problems

Method used

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Embodiment

[0015] A method for improving image contour accuracy of the present invention comprises a chain code tracking and storage contour information algorithm, and further comprises the following steps:

[0016] S1, using grayscale transformation to change the color image into a grayscale image, and perform histogram equalization processing;

[0017] S2, performing morphological processing on the image, and performing gradient operator sharpening processing;

[0018] S3, smoothing the image;

[0019] S4, after binarizing the image, extract the image contour in combination with the chain code tracking and storing contour information algorithm.

[0020] S1 is used to achieve dimensionality reduction. Usually each pixel of a color image is represented by 3 values, and the grayscale transformation is used to transform from 3×255 combinations to only 255 combinations; histogram equalization is based on the cumulative distribution function. The histogram modification method, its purpose ...

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Abstract

The invention discloses a method for improving image contour precision, and relates to an image contour extraction method. The method comprises a chain code tracking storage contour information algorithm, and further comprises the following steps: S1, changing a color image into a gray image by gray conversion, and carrying out histogram equalization processing; S2, performing morphological processing on the image, and performing gradient operator sharpening processing; S3, performing smoothing processing on the image; and S4, binarizing the image, and extracting the image contour in combination with the chain code tracking storage contour information algorithm. Exponential transformation is adopted in the nonlinear transformation. According to the method, the contour detection precision can be effectively improved, and the processing speed is increased due to the adoption of the gradient operator.

Description

technical field [0001] The invention relates to an image contour extraction method, in particular to a method for improving the accuracy of the image contour. Background technique [0002] Contour extraction methods usually rely on high-order operators for analysis. Because the high-order operators are simulated and intuitive, it is difficult for the naked eye to judge whether the contour extraction is good or bad. In fact, there are many noise points, which have a great impact on the restoration operator. Contents of the invention [0003] The technical problem to be solved by the present invention is that the anti-interference ability of the existing image contour extraction method is insufficient, and the purpose is to provide a method for improving the accuracy of the image contour to solve the above problems. [0004] A method for improving the accuracy of image contours, comprising a chain code tracking algorithm for storing contour information, and further comprisin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/155G06T7/13G06T5/40G06T5/00
CPCG06T7/155G06T7/13G06T5/40G06T5/73
Inventor 张杰
Owner 张杰