A Planar Object Detection Method Based on Continuous Edge Features

A technology of edge features and detection methods, which is applied in the directions of instruments, calculations, character and pattern recognition, etc., can solve the problems of insufficient versatility, and achieve the effect of meeting the needs of real-time detection and high detection accuracy

Active Publication Date: 2019-10-15
FUDAN UNIV
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Problems solved by technology

To a certain extent, it solves the problem of insufficient generality of existing detection methods

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  • A Planar Object Detection Method Based on Continuous Edge Features
  • A Planar Object Detection Method Based on Continuous Edge Features
  • A Planar Object Detection Method Based on Continuous Edge Features

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Embodiment Construction

[0046] The present invention is further described below in conjunction with the accompanying drawings, but the scope of the present invention is not limited in any way.

[0047] 1. Operation process of planar target detection

[0048] Such as figure 1 As shown, the framework of the present invention can be divided into two parts: model building and target detection. In the model building stage, the contour model of the target is obtained by rasterizing the design drawing or performing continuous edge extraction on the template target. The target detection part uses the contour model of the target Candidate targets are extracted, and the precise location of the target is obtained through target screening and precise positioning algorithms.

[0049] 2. The specific implementation process of plane target detection

[0050] The method for detecting plane objects based on continuous edge features provided by the present invention can be summarized as follows:

[0051] 1) Extract...

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Abstract

The invention belongs to the technical field of machine vision image processing, in particular to a plane target detection method based on continuous edge features. The method of the invention includes the steps of extracting continuous edge features, establishing a target contour model, extracting candidate targets based on Hough transform ideas, screening candidate targets and realizing precise positioning. It is especially suitable for quickly establishing models of unknown planar targets and realizing target detection in industrial scenarios. The present invention does not need to adjust the method for a specific target, and is applicable to various planar targets (and targets with a planar surface), which solves the problem of weak general-purpose ability of the current visual system to a certain extent. At the same time, the invention has high detection precision, high efficient processing rate and certain anti-noise ability.

Description

technical field [0001] The invention belongs to the technical field of machine vision image processing, and specifically relates to a method for quickly establishing a model of an unknown planar target and realizing target detection in an industrial scene. Background technique [0002] Image processing technology is usually the core part of a vision system, and the edge extraction technology and target detection technology involved in the present invention are one of the most important research methods in the field of image processing. [0003] When people observe an object, the perceived edge is usually a place where the color has obvious changes, and the mathematical representation of this change in the image is the edge detection operator. The commonly used operators include Roberts operator, Sobel operator, Prewitt operator, Laplacian operator, and Canny operator. Although these traditional algorithms based on edge detection operators can extract edge pixels, many noise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/32G06K9/46
CPCG06V10/255G06V10/44
Inventor 张文强薛向阳王洪荣张睿路红郑骁庆张超杜正阳
Owner FUDAN UNIV
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