基于移动互联的农产品二维码溯源系统设计

【目的】提出一种基于移动互联的农产品二维码（QR码）溯源系统。【方法】研究该系统的逻辑和物理结构，分析里德-索洛蒙（RS码）纠错编码原理及二维码编码算法。采用压缩感知（Compressed sensing，CS）算法预处理受污图像，对比传统的Gaussian、Disk和Log去噪方法，研究二维码数据容量与纠错的关系，研究扫描像素、受污位置和可识别图像的联系，确定手机摄像头参数。【结果】手机扫描最低像素为200万。RS编码信噪比为10.7 dBm时，CS误码率为0.040 1，低于Log法的0.042 5； RS编码信噪比为11.7 dBm时，CS误码率为0.011 3,低于Gaussian法的...

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Bibliographic Details
Published in华南农业大学学报 Vol. 38; no. 3; pp. 118 - 124
Main Author 凌康杰 岳学军 刘永鑫 王健 王林惠 甘海明
Format Journal Article
LanguageChinese
Published 华南农业大学 电子工程学院/广东省农情信息监测工程技术研究中心,广东广州,510642 2017
Subjects
二维码（QR码）
信噪比（SNR）
农产品
压缩感知
溯源系统
里德-索洛蒙码
compressed sensing
里德-索洛蒙码
traceability system
压缩感知
two-dimension code(QR code)
信噪比(SNR)
二维码(QR码)
农产品
溯源系统
signal to noise ratio
Reed-Solomon code
farm product
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ISSN1001-411X
DOI10.7671/j.issn.1001-411X.2017.03.019

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Summary:【目的】提出一种基于移动互联的农产品二维码（QR码）溯源系统。【方法】研究该系统的逻辑和物理结构，分析里德-索洛蒙（RS码）纠错编码原理及二维码编码算法。采用压缩感知（Compressed sensing，CS）算法预处理受污图像，对比传统的Gaussian、Disk和Log去噪方法，研究二维码数据容量与纠错的关系，研究扫描像素、受污位置和可识别图像的联系，确定手机摄像头参数。【结果】手机扫描最低像素为200万。RS编码信噪比为10.7 dBm时，CS误码率为0.040 1，低于Log法的0.042 5； RS编码信噪比为11.7 dBm时，CS误码率为0.011 3,低于Gaussian法的0.014 7。CS在多种噪声处理中的最大编码信噪比均大于10 dBm。噪声掩盖区域对位置区影响最大，噪声在位置区和编码区的解码平均正确率分别为87.68%和91.24%。【结论】该系统实现了对象信息的完整性、可追溯性，解决了农产品种植、加工、流通、销售各个环节信息的滞后问题。
Bibliography:Objective】 To establish a farm product traceability system using two-dimension code （QR code） based on mobile internet.【Method】The logical and physical structure of the farm product traceability system was studied. The principles of error collection code（ECC） based on Reed-Solomon（RS） code and the encoding algorithm of QR code were analyzed. The stained QR code was preprocessed by compressed sensing （CS） algorithm, and the result was compared with those from traditional denoising methods such as Gaussian, Disk, and Log algorithms. The relationship between QR code capacity and error correction, and the relationship between scanning pixels, staining position and image identifiablility have been studied. The parameters of mobile phone were identified.【Result】The lowest pixel of mobile phone scanning was two million, and CS was able to solve the staining problem of QR code effectively. The error bit rate （EBR） of CS was 0.040 1 when signal noise rate （SNR） was 10.7 dBm, which was lower than the result of Log meth
ISSN:1001-411X
DOI:10.7671/j.issn.1001-411X.2017.03.019