A Digital Recognition Method of Internet Banking Shield Based on Connected Domain and Tangent Slope
A tangent slope and digital recognition technology, which is applied in character recognition, character and pattern recognition, instruments, etc., can solve the problems of rough edges of laser printed digital strings, inability to separate and recognize them, and achieve good recognition ability, fast speed and accurate recognition high rate effect
Active Publication Date: 2021-11-02
WUHAN UNIV OF SCI & TECH
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Problems solved by technology
[0002] Compared with the traditional printed digital strings with higher quality, laser printed digital strings have problems such as breakpoints and rough edges, so traditional algorithms cannot be used to accurately segment and identify them.
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[0019] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.
[0020] Compared with the traditional printed digital strings with higher quality, laser printed digital strings have problems such as breakpoints and rough edges, and traditional algorithms cannot be used to accurately segment and identify them. Therefore, the present invention proposes a method for cutting and identifying laser-printed digital strings. In this method, the expansion structure element is used to eliminate the breakpoints of the laser digital strings. In order to ensure the complete elimination of the breakpoints, a larger expansion factor is s...
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The invention discloses a digital recognition method based on connected domain and tangent line slope, which uses expansion structure elements to eliminate laser digital string breakpoints. To ensure that the breakpoints are completely eliminated, a relatively large expansion factor is set to make the digital strings somewhat Conglutination, the extremum segmentation method is performed on the cohesive number strings to separate the numbers, and finally the digital prototype is constructed with 6 geometric and topological features to distinguish the numbers, so as to recognize the numbers. The actual digital recognition experiment of Internet Banking Shield shows that the recognition accuracy of this recognition method for digital strings is as high as 99%, and the average recognition time is 0.15s. The system has high recognition accuracy and certain real-time performance. Further improvement of the system can be applied to the online monitoring of laser printing production lines and the consistency check of products and packaging before leaving the factory.
Description
technical field [0001] The invention belongs to the technical field of automatic identification and detection, and relates to an online banking shield digital identification method, in particular to an online banking shield digital identification method based on connected domains and tangent line slopes. Background technique [0002] Compared with the traditional printed digital strings with higher quality, laser printed digital strings have problems such as breakpoints and rough edges, and traditional algorithms cannot be used to accurately segment and identify them. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a digital identification method of the online bank shield based on the connected domain and the slope of the tangent line. [0004] The technical scheme adopted in the present invention is: a kind of online bank shield digital recognition method based on connected domain and tangent slop...
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IPC IPC(8): G06K9/32G06K9/34G06K9/40
CPCG06V30/1478G06V30/153G06V10/30G06V30/10
Inventor 姜燕饶刚梅文浩张颖
Owner WUHAN UNIV OF SCI & TECH