基于TMS320C6713B浮点DSP的二维条形码识别系统设计和实现-电机与电器专业论文.docxVIP

ABSTRACT Barcode is a kind of image，which is build up by black bars and white spaces， and obeys some rules to indicate data information Barcode technology has been used widely in many fields. With the growth of information technology and modern management ，the important ofbarcode using is increasing by days. ‘ 曾 Nowadays，the suppliers of civil barcode application 町e mostly ov町seas ωmpan弘 To 刨出马， the local r叫uirement of barcode reader，the local developing of such equipment is very important. In this project ，a barcode read system 臼designed， which is made by 岛cus system， lighting system， digital image gathering system， image processing and communication syste肌 The major work is 部 follow创. (1)旦出创on the analysis of similar product ，the system per如rmance characteristics and structure are exported Studied the hardware design program in detail. Designed the hardware schematics. In the block of image gathering，connected FPGA and ping-pang RAM to accomplished data buffer. And optimized switch logicωensure the r叫uirement of decode timing and hi幽叩eed 伽ta 衍ans缸. Designed image processing algorthim， including image pre翩processing ， barcode locating. And designed decode subroutine according to ISO stardand. Finally optimized the whole algorthim on hardware platform. Imporoved the efficiency of program and ensured 阳sy:阳mruntime. KEY WORDS: Barl∞巾， Optoelectronic Scanning，Digital Signal Processor， Digital Image Processing ， 目录 第一章绪论…..........……………川…………川…..…川………………….........川 1.1条形码概述川........................…………………..............……川 ..............1 1.2 条形码的种类和特点…......…...............................…川..…...........…..….. 1 ‘ 1.3 条形码的起源和发展....….......，....……… ...............11...................... 3 1.4 条形码技术的发展趋势........………….......……........…....................… 3 1.5 条形码识读设备的现状.……………………………………·…........… 4 1.5.1 国外产品现状.....………..........………叫…............……… ......4 1.5.2 国内研究开发现况........……............…………....……… .........4 1.6 自主知识