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Edge detection method, edge detection device and computer readable storage medium

An edge detection device and edge detection technology are applied in the field of image processing, which can solve the problems of excessive noise, inaccuracy, inability to distinguish noise and short edges in edge images, and achieve the effect of improving edge detection accuracy and reducing noise interference.

Pending Publication Date: 2022-03-29
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

However, using the Canny algorithm for edge detection cannot distinguish between noise and short edges in the template pixel image, resulting in noisy and inaccurate edge images

Method used

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  • Edge detection method, edge detection device and computer readable storage medium
  • Edge detection method, edge detection device and computer readable storage medium
  • Edge detection method, edge detection device and computer readable storage medium

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Embodiment Construction

[0031] 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 disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0032] In related technologies, when edge detection is performed, the Canny algorithm is usually used as an algorithm for edge contour extraction. When using the Canny algorithm for detection, dual thresholds are often used to detect the edge strength, and then the contour edge of the template pixel image is obtained by adjusting the dual thresholds. However, the limitation of the dou...

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Abstract

The invention relates to an edge detection method, an edge detection device and a computer readable storage medium. The edge detection method comprises the following steps: acquiring a template pixel image, and determining a strong edge binary image and a weak edge binary image of the template pixel image; based on the strong edge binary image and the weak edge binary image, strong edge image screening is carried out, a target edge binary image is obtained, and the target edge binary image and the weak edge binary image have the same size. Connected domain selection is carried out on the target edge binary image to obtain a plurality of connected domains, and the connected domains comprise at least one group composed of continuous edge pixels. And in the plurality of connected domains, screening out a target connected domain of which the number of continuous edge pixels in a cluster exceeds a specified threshold value. And detecting an edge image of the template pixel image based on the target connected domain. Through the method provided by the invention, the connected domains conforming to the specified threshold can be screened according to the number of the edge pixels, so that the edge with the proper length is obtained, and noise interference is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to an edge detection method, an edge detection device, and a computer-readable storage medium. Background technique [0002] Edge detection is a basic problem in image processing and computer vision. It is mainly used to extract the edge information of the template image and save it as the operation basis of the subsequent template matching operation. In industrial vision positioning tasks, the template matching method based on edge contour features is often used to locate the detection target. The contour template matching method is based on the comparison between the existing detection target contour template and the search image, and then obtains the position and angle of the target object in the search image. [0003] In related technologies, when creating an edge profile template, the Canny algorithm is usually used to extract the edge profile of the temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06T7/136G06T7/187G06T5/00
CPCG06T7/13G06T7/136G06T7/187G06T2207/30204G06T5/70
Inventor 于冀张会强韩雪松喻金万冯兆阳
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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