Two-dimensional code identification chip and realization method therefor

Abstract

The invention discloses a two-dimensional code identification chip and a realization method therefor. The chip comprises an ARM kernel module, a storage module, a security module, an image processing module, a bus interface module and an I / O module that are all integrated on one chip and all connected with an AHB bus or an APB bus. The method comprises the steps of driving a camera to obtain a two-dimensional code image; performing blind reconstruction processing on the obtained two-dimensional code image; performing image characteristic extraction on the image subjected to the blind reconstruction processing; performing intelligent mode identification by adopting a trained SVM classifier according to the extracted image characteristics to obtain a standard type of a two-dimensional code; and performing code word extraction and decoding according to an intelligent mode identification result, and performing outputting. The chip has the advantages of low cost, high processing speed, small volume, universality, low power consumption and high reading efficiency, and can be widely applied to the technical field of two-dimensional codes.

Description

technical field [0001] The invention relates to the technical field of two-dimensional codes, in particular to a two-dimensional code recognition chip and an implementation method thereof. Background technique [0002] The barcodes printed on commodity packaging that people see are one-dimensional barcodes, which are widely used in many fields and greatly improve the speed of data collection and information processing. However, it only represents data in the horizontal direction, has no information in the vertical direction, and has a low density, so it can only identify items but not describe them. If you want to know the relevant information of the product, you must also enter the database by reading the barcode. This requires that people must set up a database with the code represented by the barcode as the index field in advance, and its application is limited in places where there is no database and cannot be connected to the Internet. In addition, it is almost imposs...

AI Technical Summary

Problems solved by technology

[0006] Traditional two-dimensional code recognition equipment adopts the method of image acquisition and decoding by software, and its circuits are mostly based on discrete components or programmable logic circuits. Although this method is easy to implement, it still has many defects, such as slow processing speed , large size, high power consumption and low reading efficiency

[0007] In addition, there are many standards for two-dimensional codes. The current mainstream two-dimensional code standards include QR code (Quick Response Matrix Code), DataMatrix code, PDF417 code, etc. These standards are incompatible with each other, causing enterprises to purchase multiple standards of reading It is necessary to design a corresponding identification method for each standard, which increases the total cost of the enterprise

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