Vector graphics identifying method for engineering CAD drawing

Abstract

This invention relates to a vectorized idenfication system of CAD engineering blueprints including the following steps: A, applying a self-defined template filtration method based on windowns to eliminate noises of input binary data and verifying them on a platform of the customer end, B, applying an initial vectorized process based on a tilt frame covering domain to initially vectorize the binary image, C, generating a position index list of the initial vectorized data at the server end, D, applying a detection method based on the assumption to identify the vector data, E, integrating all identified results at the server and outputting them to the customer end in the standard DXF file format, which improves result of initial vector to increase the operation rate.

Description

Technical field: [0001] The present invention relates to a vectorization process of engineering CAD drawings, in particular to a vectorized graphic recognition method for engineering CAD drawings, which can be widely used in the fields of engineering drawing recognition, image graphic symbol detection and recognition, and industrial automation detection. field. 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 manage the...

AI Technical Summary

Problems solved by technology

At present, the research on vectorization is basically carried out under the framework of these methods, but for images with noise interference, only the method of discrete image tracking can achieve better results, but the method of discrete image tracking can avoid the initial In the process of full image search in the process of vectorization, the position index algorithm is used. The coverage area obtained by this algorithm cannot completely match the original image, which will cause some wrong vectorization results.

In addition, because the vectorization of engineering CAD drawings still has many imperfections in theory, most of them are still in the research stage and have not formed a complete system.

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