Design And Realization Of The QR Code Recognition System Based On The Embedded System

QR code has a advantage of big information capacity,high reliability and strong anti-loss,ultra-high-speed and full-reader,etc.and can also be able to express Chinese character by efficient data model.So it will develop suitably in China.As the development of information technology and two-dimensional bar code,bar code identificated equipment shows a trends of micro-shaped,intelligence and networking.It can be applied to e-commerce,logistics,commodity exchange,authentication,security, security,advertising and other fields,so studying the QR code recognition under embedded system has a important practical significance.This paper first introduces the relevant knowledge of the two-dimensional bar code and its application and development in domestic and international,analyzes the structural features of QR Code, studies the QR Code data coding rules in different data modes and its identification,decode methods,include error correction decode using the BM iterative algorithm;And It also analyzes the image acquisition methods by USB camera device under WinCE environment,studies the image Pre-processing methods at the same time,uses OTSU algorithm to select image threshold,and makes image to binarization,uses HOUGH transform and bilinear interpolation methods to correct the images in geometric.It solves the image noise on the impact of bar code information, gives the software and hardware platform of the develop system, implements the QR Code recognition under the embedded platform.Finally implement the two-dimensional barcode,QR code, identification and decode under the embedded ARM platform of TQ2440 development board and WinCE environment.