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A kind of circuit diagram identification method

An identification method and circuit diagram technology, applied in the field of circuit diagram identification, can solve the problems of reduced component identification accuracy, inability to meet requirements, noise sensitivity, etc., to achieve the effect of improving user experience

Active Publication Date: 2020-12-22
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

It will reduce the correct rate of component recognition, be sensitive to noise, and cannot operate normally to obtain the correct circuit connection relationship when there is a missing print. At the same time, the recognition result cannot be corrected when an error occurs.
Unable to meet our requirements in the actual project

Method used

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  • A kind of circuit diagram identification method
  • A kind of circuit diagram identification method
  • A kind of circuit diagram identification method

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Embodiment Construction

[0027] 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 with reference to the accompanying drawings and examples.

[0028] The core idea of ​​the present invention is to use nodes as the basis for identification, obtain the node-mesh-branch relationship based on the characteristics of different node types, and obtain the circuit topology relationship, which can realize different forms of circuit diagrams in different environments including Efficient identification of circuit diagrams with missing parts of wires.

[0029] In the traditional circuit concept, the branch connection points with three or more nodes are called nodes. However, the present invention defines circuit nodes in a broad sense, and classifies the nodes morphologically. There are four types of nodes formed by two branches, four types of nodes formed by three branches, and one type of node formed by...

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Abstract

The invention discloses a circuit diagram identification method, which comprises the following steps of: pre-defining connection points of two or more than two straight branches as nodes, identifyingnodes and elements in a circuit diagram photo, and determining types and coordinates of each node and element; Numbering the nodes and the elements from top to bottom and from left to right respectively to obtain a circuit topological relation; the obtaining a node-mesh relationship, a node-branch relationship, and a branch-component relationship; obtaining a branch-node-mesh-component relationship according to the ode-mesh relationship, a node-branch relationship, and a branch-component relationship as an output result; And judging the output result through the set judgment conditions, and ifall the judgment conditions are met, determining that circuit diagram recognition is completed. According to the invention, the accuracy of circuit identification can be improved.

Description

technical field [0001] The invention relates to the technical fields of image recognition and artificial intelligence, in particular to a circuit diagram recognition method. Background technique [0002] With the development of image recognition business needs, recognition methods with high accuracy, fast recognition speed, and strong "robustness" are favored. Image recognition is a technology that uses computers to process, analyze and understand images to identify targets and objects in various patterns. In general industrial use, industrial cameras are used to take pictures, and then software is used for further recognition processing based on the gray scale difference of the pictures. Image recognition performs feature extraction and classification on images obtained from image processing. The basic and commonly used methods in recognition methods are Statistic Method, Syntactic Recognition, Neural Network, Template Matching and Geometric Transformation. It is our con...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62
Inventor 梁栋李沁峰徐崟淞马凡凡曾丽汪铮
Owner BEIJING UNIV OF POSTS & TELECOMM
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