摘要
由于二维码(QR Code)信息量大,容错能力强等特点,很多商品都使用QR Code承载商品信息,用户只需扫描QR Code即可获取原始信息。目前大多数做法是使用摄像头进行QR Code的扫描,很多智能手机中带有QR Code扫描APP,但摄像头的扫描需要较好的光线,扫描到的图像存在畸变,存储多帧图像所使用的内存开销较大。因此,文中提出使用接触式传感器(CIS)来进行图像的扫描,它自带光源,可较好地解决摄像头的问题,针对CIS扫描到的图像特点,文中提出一种图像处理的算法,从扫描方向和与扫描垂直方向两个方向上对图像进行处理,省略大量浮点运算。本方案经过测试,准确率较高,计算量,内存占用率和处理速度都较传统QR Code扫描方式有一定的改善和提高。
Q R code contains loads ol information. It has strong error correction ability. Many products use QR code to carry the product information. Users can simply scan the QR code to gain information. At present,most popular way is to use the camera to scan the QR code. Lots of smart phones have QR code scanning A P P s . However, the camera's scanning needs light. Camera also brings image distortion,costing large amount of work for calculating and storage. Therefore, the paper suggests using contact image sensor (CIS) to scan QR code images. CIS has its own light source, so it has advantages overcamera. According to the characteristics of CIS,the paper presents a new image processing algorithm.The new algorithm processes image from two directions, one is parallel to scanning while the other isvertical to scanning. It can reduce many float point calculations. The image recognition accuracy rate is higher and the memory occupancy rate and processing speed are all improved after being tested comparing to the traditional QR code scanning method.
作者
钟阳
李外云
金豫
ZHONG Yang;LI Wai-yun;JIN Yu(Department of Communication Engineering,East China Normal University,Shanghai 200241,China)
出处
《信息技术》
2016年第12期139-141,146,共4页
Information Technology
