| 散焦模糊的畸变QR barcode图像复原技术 |
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| 引用本文： | 明安龙,马华东,赵庆鹏.散焦模糊的畸变QR barcode图像复原技术[J].计算机辅助设计与图形学学报,2007,19(8):1080-1084. |
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| 作者姓名： | 明安龙 马华东 赵庆鹏 |
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| 作者单位： | 北京邮电大学智能通信软件与多媒体北京重点实验室,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家自然科学基金
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教育部高等学校博士学科点专项科研基金
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教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 根据散焦模糊的QR barcode(QR码)图像特点,采用自适应阈值方法滤除模糊效应,通过轮廓查找算法初步定位4个顶点和消除噪声,利用2次反透视变换结合双切线逼近的方法初步复原图像,使用自适应栅格划分法进行中心点采样,得到最终的复原图.实验结果证明:该方法简单易行,对散焦模糊或具有复杂背景的QR码图像的复原取得了较好的效果.
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| 关 键 词： | 快速矩阵响应码 轮廓 反透视变换 图像处理 散焦模糊 畸变 图像复原技术 Images Technique 效果 背景 结果 实验 点采样 中心 划分法 栅格 使用 方法 逼近 切线 结合 透视变换 利用 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2007-03-02 |
A Correction Technique to Defocused and Distorted QR Barcode Images |
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| Ming Anlong,Ma Huadong,Zhao Qingpeng.A Correction Technique to Defocused and Distorted QR Barcode Images[J].Journal of Computer-Aided Design & Computer Graphics,2007,19(8):1080-1084. |
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| Authors: | Ming Anlong Ma Huadong Zhao Qingpeng |
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| Affiliation: | Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia, Beijing University of Posts and Telecommunications, Beijing 100876 |
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| Abstract: | A technique is proposed to eliminate the illegible effect by the binarization with self-adaptive thresholding according to the features of defocused QR code image. The corner points are initially located by contour search algorithms, and a QR code image is rebuilt from a distorted one by using a double tangents method designed to approximate the right-bottom point with double inverse perspective transformations. A novel self-adaptive grids generation algorithm for sampling is designed to generate the final code image. Experimental results show that our method is simple and workable, especially for defocused and distorted QR barcode images. |
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| Keywords: | QR code contours inverse perspective transformation image processing |
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