| 一种快速响应码的图像二值化方法 |
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| 引用本文： | 邹雄,何翠群,刘国栋,王建敏. 一种快速响应码的图像二值化方法[J]. 传感技术学报, 2010, 23(9): 1277-1280. DOI: 10.3969/j.issn.1004-1699.2010.09.014 |
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| 作者姓名： | 邹雄 何翠群 刘国栋 王建敏 |
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| 作者单位： | 江西科技师范学院,南昌,330013;南昌工程学院,南昌,330099 |
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| 基金项目： | 国家自然科学基金资助课题 |
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| 摘 要： | 采集到的QR码图像首先需要转换为二值图像然后译码识别,但是在使用摄像头采集QR码图像中存在光照不均和反光等现象,经过全局二值化处理后会有全白或全黑的区域,而经过局部二值化处理会有"伪边界",并且计算量大导致耗时长.本文提出一种联合阈值二值化方法,首先对QR码图像采用全局二值化方法,然后利用QR码图像特征找到光照不均或反光的区域,并对该区域采用一种嵌套式的局部二值化方法,这种方法提高了准确率,减少了计算时间并且防止"伪边界"的产生.将最后结果和几种常用的二值化算法比较,实验结果表明:使用该方法可以明显提高QR码识别的效率和准确率.
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| 关 键 词： | 图像预处理 二值化 阈值 快速响应码 |
A Binarization Method of Quick Response Code Image |
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| ZOU Xiong,HE Cuiqun,LIU Guodong,WANG Jianmin. A Binarization Method of Quick Response Code Image[J]. Journal of Transduction Technology, 2010, 23(9): 1277-1280. DOI: 10.3969/j.issn.1004-1699.2010.09.014 |
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| Authors: | ZOU Xiong HE Cuiqun LIU Guodong WANG Jianmin |
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| Affiliation: | ZOU Xiong1,HE Cuiqun2,LIU Guodong1,WANG Jianmin1 1.Jiangxi Science & Technology Normal University,Nanchang 330013,China,2.Nanchang Institute of Technology,Nanchang 330099 |
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| Abstract: | A QR code picture was converted to the binary image which was used to identify. Nonuniform illumination and reflection would inevitablly effect the picture, and the image would present the error area which is white or black in the processing of global binarization. Pseudo-boundary would appeare in the processing of local binarization, and the calculation would take a long time. A joint binarization method is proposed. Firstly, the picture was converted with the global bianarization, and evaluated the error ... |
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| Keywords: | image preprocessing binarization threshold quick response code |
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