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Barcode recognition method based on multi-core dsp

A barcode recognition and barcode technology, applied in the direction of electromagnetic radiation induction, etc., can solve the problem of lower recognition rate, achieve high recognition rate, real-time performance, and broad application prospects

Active Publication Date: 2016-06-01
WAYZIM TECH CO LTD
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AI Technical Summary

Problems solved by technology

The barcodes that are not recognized correctly due to the reduction of recognition rate can only be solved by manual assistance in the later stage.

Method used

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  • Barcode recognition method based on multi-core dsp
  • Barcode recognition method based on multi-core dsp
  • Barcode recognition method based on multi-core dsp

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0019] The bar code recognition method based on the multi-core DSP that the present invention proposes, with such as Figure 4 The barcode recognition system shown is the hardware basis. The barcode recognition system uses the eight-core DSP processor TMS320C6678 of Texas Instruments (TI), which has a theoretical computing power of up to 10G / s; each core has 32KBL1P (program cache), 32KBL1D (data cache), and 512KBL2 independent built-in cache Cache (can be adjusted through settings according to the specific conditions of the project). The main hardware architecture is DSP processor + XilinxFPGA chip.

[0020] TMS320C6678DSP processor can provide a wealth of external expansion interface: (1) 512MBDDR3-1333 memory; (2) 64MBEMIFNANDFlash flash memory (per core); (3) 16MBSPINORFLASH flash memory (per core); (4) 128KBI2CEEPROMforbooting (per core); (5) )Two gigab...

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Abstract

The invention provides a barcode identification method based on a multi-core DSP. The method comprises the following steps: (a) a main core of the multi-core DSP conducts image segmentation processing on a received image and splitting the image into n image sections according to the total number n of cores on the DSP; (b) the main core transmits the n image sections to n cores of the DSP and conducts barcode locating operation, once one core successively locates complete position information of a barcode, an obtained result is returned to the main core, and other cores are informed of stopping on-going locating operation; (3) the main core confirms barcode location and hands out the barcode location result obtained in the last step to other cores, then, the main core instantly starts processing segmentation of a next frame of image, auxiliary cores parallelly conduct binarization processing on barcode areas, and finally an auxiliary core identifies a black-white binary image of the barcode area, and the barcode information is read. The method can ensure that the barcode identification process is precise and quick.

Description

technical field [0001] The invention relates to the field of embedded miniaturized industrial vision, in particular to a method for identifying industrial barcodes. Background technique [0002] With the popularization of social informatization and the advancement of image recognition technology, the development of related fields such as industrial vision has been promoted, one of which is the automatic recognition technology of barcodes. Automatic identification technology refers to the automatic reading of relevant data of nearby target objects without human intervention through a certain identification device. Barcode technology provides an effective means for automatic, fast and accurate data collection and input, and solves the problem of slow manual input. In recent years, it has been widely used in various occasions, including supermarkets, retail stores, logistics centers, and industrial production lines. [0003] In the automatic barcode recognition application sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10
Inventor 王丰李功燕
Owner WAYZIM TECH CO LTD
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