| 基于对数极坐标变换的图像匹配算法 |
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| 引用本文： | 赵琰. 基于对数极坐标变换的图像匹配算法[J]. 信息技术, 2008, 32(9) |
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| 作者姓名： | 赵琰 |
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| 作者单位： | 上海电力学院计算机与信息工程学院,上海,200090 |
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| 基金项目： | 上海市高校优秀青年教师后备人选科研项目 |
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| 摘 要： | 相位相关算法通常只具有平移不变性,而不具有尺度和旋转不变性,因此无法对存在尺度和旋转变化的图像进行图像匹配.而对数极坐标变换可以将图像在笛卡儿坐标系下的尺度和旋转变化变换为沿对数极坐标系的平移运动,具有较好的尺度和旋转不变性.文中提出了一种基于图像对数极坐标变换的相关匹配算法.仿真结果表明基于对数极坐标变换的相位相关算法可以针对具有尺度和旋转变换的图像进行很好的匹配,并能检测出图像的旋转角度及尺度参数.
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| 关 键 词： | 相位相关法 对数极坐标变换 图像匹配 |
Image matching algorithm based on log-polar image transform |
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| ZHAO Yan. Image matching algorithm based on log-polar image transform[J]. Information Technology, 2008, 32(9) |
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| Authors: | ZHAO Yan |
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| Affiliation: | ZHAO Yan(School of Computer , Information Engineering,Shanghai University ofElectric Power,Shanghai 200090,China) |
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| Abstract: | Phase-only correlation algorithm can only match the images with shift invariability,and would face difficulty when dealing with a more general motion model where either scaling or rotation of the matched images is present.While log-polar image transform can convert the scale and rotation changes in Descartes coordinate to shift changes in log-polar coordinate.In this paper,a correlation matching algorithm based on log-polar image transform is implemented.The simulation results show that this algorithm based... |
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| Keywords: | phase-only correlation algorithm log-polar transform image matching |
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