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Edge pixel point extraction method and device based on neighborhood relation

A technology of edge pixels and neighborhood pixels, applied in the field of image processing, can solve the problems of false detection, missed detection of edge pixels, false detection of non-edge pixels, etc., and achieves the effect of strong robustness

Active Publication Date: 2020-05-19
BEIJING LUSTER LIGHTTECH
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the traditional edge extraction algorithm is likely to cause missed detection of edges or false detection of non-edge pixels, this application provides an edge pixel extraction method based on the relationship between neighboring pixels. The method is only based on the gray level of neighboring pixels Relationship to confirm whether the pixel is an edge pixel, avoid setting the threshold, so as to solve the problem of missing or false detection of edge pixels caused by improper threshold setting

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  • Edge pixel point extraction method and device based on neighborhood relation
  • Edge pixel point extraction method and device based on neighborhood relation
  • Edge pixel point extraction method and device based on neighborhood relation

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[0039] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of approaches consistent with aspects of the invention as recited in the appended claims.

[0040] The method and device for extracting edge pixels based on neighborhood pixel relationships provided by the present application will be described in detail below through specific embodiments.

[0041] For the convenience of description, first introduce the terms used in this application:

[0042] Figure 4 Show the pixel neighborhood map, such as Figure 4 As shown, each square represents a pixel po...

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Abstract

The invention discloses an edge pixel point extraction method and device based on a neighborhood pixel relationship. The method comprises the steps of obtaining a to-be-detected image; determining a to-be-detected area in the to-be-detected image; obtaining a gray value of a neighborhood pixel point of an ith pixel point in the to-be-detected area; and determining an edge pixel point according tothe gray value of the neighborhood pixel point of the ith pixel point. The method and the device confirm whether the pixel point is the edge pixel point only based on the gray relationship of the neighborhood pixel points, and avoid setting a threshold value, thereby solving the problem of missed detection or false detection of the edge pixel point caused by improper threshold value setting.

Description

[0001] technology neighborhood [0002] The present application belongs to the field of image processing, and in particular relates to a method and device for extracting edge pixels based on neighborhood relations. Background technique [0003] In the prior art, the following method is often used to identify the image of the object to be detected, extracting edges from the original image captured by the photographing device, and then identifying the object to be detected in the original image according to the extracted edge. figure 1 It shows the original image of a color card obtained by shooting, from such as figure 1 The edge of each color block is extracted from the original image of the color card shown, and then the position and range of each color block are identified from the edge of each color block. [0004] The current commonly used edge extraction methods include Sobel edge extraction algorithm and Canny edge extraction algorithm. The weighted difference of the g...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06K9/46
CPCG06T7/13G06T2207/10004G06T2207/10024G06V10/44
Inventor 牛红闯杨艺
Owner BEIJING LUSTER LIGHTTECH