Preprocess method for engineering drawing vectorization recognition system

A technology for identifying systems and engineering drawings, applied in character and pattern recognition, instruments, computer parts, etc., to achieve the effects of high vectorization accuracy, wide application range, and fast operation speed

Active Publication Date: 2009-10-28
永凯软件技术(上海)有限公司
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a preprocessing method for engineering drawing vectorization recognition system, which mainly solves the technical problems existing in the existing image vectorization preprocessing, it can improve the result of preliminary vectorization, and increase the operation rate of vectorization

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  • Preprocess method for engineering drawing vectorization recognition system
  • Preprocess method for engineering drawing vectorization recognition system
  • Preprocess method for engineering drawing vectorization recognition system

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Embodiment Construction

[0031] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] In the embodiment of the present invention, adopt client / server hardware topology such as figure 1 shown. The client can be connected to an image acquisition device (such as a scanner) or a hardware storage device. Therefore, the source of the image can be scanned by the image acquisition device and sent to the client, or the image file is given by the storage device and sent to the client. Client; wherein: image scanning is to scan the drawing into an analog signal through the photoelectric scanning device of the image acquisition device, and convert the analog signal into a digital image signal through the A / D converter, and the image signal is sent to the client through the USB bus;

[0033] Among them, the scanning program is started to scan the drawing through the scanning function of the vectorization system, and...

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Abstract

The invention relates to a vectorized recognition method for engineering drawings, in particular to a preprocessing method for a vectorized recognition system for engineering drawings. The method can be widely used in the fields of engineering drawing recognition, image graphic symbol detection and recognition, and industrial automation detection. It includes the following steps: A. Binarize the collected images on the client side using a method based on adaptive threshold; B. Preprocess the binary image on the client platform by using morphological filtering; C. The terminal uses the preliminary vectorization process based on the oblique frame coverage domain to perform preliminary vectorization on the binary image, and transmits the result to the server. Using the method of the above invention can improve the result of preliminary vectorization and increase the operation rate of vectorization.

Description

Technical field: [0001] The invention relates to a vectorized recognition method for engineering drawings, in particular to a preprocessing method for a vectorized recognition system for engineering drawings. The method can be widely used in the fields of engineering drawing recognition, image graphic symbol detection and recognition, and industrial automation detection. Background technique: [0002] In today's information society, although CAD technology has been widely used in the field of industrial design, there are still a large amount of drawing information stored, managed and applied in the form of paper and pictures. These engineering drawings are often accumulated by a system or industry for a long time, completely preserving the valuable experience in the past, and have a good reference for future design. A considerable part of them will be modified and reused in future design and manufacture. In order to reuse these drawings, it is an inevitable development to m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/20G06K9/38G06K9/36
Inventor 顾永明刘刚陈杰
Owner 永凯软件技术(上海)有限公司
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