The Design And Implementation Of Two Dimensional Coderecognition System

Common QR code is used in a manner to push information through advertising, Web display, including scanning user-initiated code, is not conducive to the promotion of information. If businesses are to push messages can only be sent via MMS to the user, and requires recognition in the relevant again after MMS sent to device support, and transfer the picture likely to cause high costs. In addition, QR code because of its large information capacity and easy to get virus disguised, users had no knowledge of the case once the scan code will pose a security risk. In view of the existence of these restrictions is not conducive to safe, efficient Internet information technology development, from the lower terminal adapter universality and security point of view and puts a strong, easy to secure recognition of two-dimensional bar code QR code codec technology, characters.Characters two-dimensional code has changed the traditional two-dimensional code must be sent via MMS graphically(MMS) channel to the mobile terminal technology model, full use of mobile phone text messages(SMS) channel more universal characteristics, greatly enhance the two-dimensional characters code can be realized, but also greatly facilitate the push message. Because the characters two-dimensional code information capacity storage, so there is sufficient capacity to join anti-counterfeit labels, so the characters two-dimensional code has a strong security capabilities. Added error correction code in the character recognition algorithms and symbolic structure of two-dimensional code, so when the character recognition errors, the entire two-dimensional code can still correct reading, a certain robustness.From the point of view of the specific contents:(1)Research existing mainstream graphics dimensional code identification system to understand the basic pattern recognition methods, pretreatment methods and identifying information decoding technology. Analysis of several existing adjustable threshold segmentation algorithm for the two-dimensional bar code character image preprocessing, find adaptive threshold segmentation algorithm; according to the geometric characteristics of the bar code character image positioning symbols of identification and labeling were locator; using support vector machine(SVM) for character recognition analysis. Finally;(2)Study of existing codecs and symbolic rules mainstream two-dimensional code, master coding process is completed coded character set; understand preprocessor, error correction processing, and ultimately complete coding procedures, and test;(3)Two-dimensional code character decoding system design article, the high rate of error correction using Reed-Solomon code as an error correction coding; complete symbolic processing system;(4)Performance Measurement and comparison of complete analysis of the characters two-dimensional code, comprising: Feasibility analysis, the ability to analyze the security and robustness analysis.