A method for identifying vector graphics of electronic seals based on graphic recognition
An electronic seal and graphic recognition technology, applied in the field of data processing, can solve problems such as reducing accuracy, parameter adaptation, increasing parameter storage capacity, etc., to achieve the effect of ensuring accuracy
Active Publication Date: 2022-06-24
北京点聚信息技术有限公司
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However, the existing vector diagram recognition method generally calls the database of known text, graphics and other primitives for direct fitting when detecting the edge of the stamp image. This method relies on the adaptability of the database to the actual image, that is, when the When the edge information is too complex, effective parameter adaptation cannot be performed, thereby reducing the accuracy
However, when reducing the complexity of the image primitives, such as using only basic image elements such as straight lines and curves, to improve the accuracy of the parameters of the fitted edge, the number of parameters is often greatly increased due to the excessive number of primitives. storage capacity for parameters
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[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following describes a method for recognizing a vector image of an electronic seal based on graphic recognition proposed by the present invention with reference to the accompanying drawings and preferred embodiments. Embodiments, structures, features and their effects are described in detail as follows. In the following description, different "one embodiment" or "another embodiment" are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics in one or more embodiments may be combined in any suitable form.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
[0026] The specific scheme of a method for recognizing a ...
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The invention relates to the technical field of data processing, in particular to a method for identifying a vector image of an electronic seal based on graphic recognition. The method includes: performing edge recognition on a bitmap of an electronic seal to obtain an edge image; The edge is segmented into edge segments, and based on the representation value of the line shape of the edge segment, the representation value sequence of each closed edge is obtained; for any two closed edges, the representation value sequence is periodically extended to obtain the periodic sequence of any two closed edges ; Perform sliding window on the periodic sequence of any two closed edges to obtain several common subsequence combinations; for any two closed edges, select any corresponding common subsequence combination, and the selected common subsequence combination forms a combination set, and obtains Several combination sets; the vector diagram of the electronic seal is obtained based on the identification of the optimal combination set. It can guarantee the accuracy of the vector diagram when the edge of the electronic seal image is complex.
Description
technical field [0001] The invention relates to the field of data processing, in particular to a method for recognizing a vector diagram of an electronic seal based on graphic recognition. Background technique [0002] Computer graphics are generally divided into two categories, one is vector graphics and the other is bitmap. Bitmaps are computer graphics that are composed of pixel blocks and can be represented by matrices, while vector graphics use straight lines and curves to describe graphics. The primitives of these graphics are straight lines, curves, polygons, and arcs. They are all obtained by mathematical calculation. Therefore, vector image files are generally small in size, and the storage method can be regarded as some mathematical formulas with parameters. The biggest advantage is that the image will not be distorted whether it is enlarged, reduced or rotated. It is precisely because of this feature that vector graphics are widely used in the production of elect...
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IPC IPC(8): G06V30/40G06V10/26G06V10/44
Inventor 陆猛孙高健赵云庄玉龙朱静宇张伟谢文迅孙肖辉郭尚杨瑞钦
Owner 北京点聚信息技术有限公司