| 采用循环相位相关的LPT景像匹配算法 |
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| 引用本文： | 雷蕾,李向阳,齐浩程.采用循环相位相关的LPT景像匹配算法[J].电光与控制,2010,17(1). |
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| 作者姓名： | 雷蕾 李向阳 齐浩程 |
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| 作者单位： | 1. 中国飞行试验研究院,西安,710089
2. 西安应用光学研究所,西安,710065 |
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| 摘 要： | 景像匹配辅助惯性组合导航系统中的景像匹配算法必须同时具有克服旋转和小尺度变换的能力。通过分析发现,对数极坐标变换(LPT)能将它们分别转换为子变换图之间的循环、线性平移关系。鉴于经典的相位相关法检测的是图像间的线性平移,提出了一种改进相位相关法来检测循环平移,最终利用LPT变换和新相关法实现了景像匹配算法。仿真分析表明,当存在任意的旋转、小范围的尺度变化和噪声畸变时,本文算法匹配精度达到93%以上,时间在1.3s以内,基本满足了景像匹配辅助导航系统对图像匹配算法准确性和实时性的要求。
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| 关 键 词： | 景像匹配 循环相位相关 对数极坐标变换 组合导航 |
An Algorithm for Scene Matching Using Circulation Phase Correlation and LPT |
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| LEI Lei,LI Xiangyang,QI Haocheng.An Algorithm for Scene Matching Using Circulation Phase Correlation and LPT[J].Electronics Optics & Control,2010,17(1). |
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| Authors: | LEI Lei LI Xiangyang QI Haocheng |
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| Affiliation: | 1. Chinese Flight Test Establishment;Xi'an 710089;China;2. Xi'an Institute of Applied Optics;Xi'an 710065;China |
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| Abstract: | Image matching algorithm for scene matching aided navigation system must have ability to overcome scale and rotation at the same time. The Log-Polar Transform( LPT) can respectively transform them into linear or circulation translation relations between the sub-transformation charts. Because the phase correlation techinque only determines the linear-translation movement,an improved phase correlation method was presented,which can detect the circulation translation. The new correlation method and LPT were us... |
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| Keywords: | scene matching circulation phase correlation Log-Polar Coordinate mapping integrated navigation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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