| 基于同态滤波的鲁棒多尺度微运动测量算法 |
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| 引用本文： | 黄赞,张宪民,陈忠.基于同态滤波的鲁棒多尺度微运动测量算法[J].仪器仪表学报,2011,32(2). |
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| 作者姓名： | 黄赞 张宪民 陈忠 |
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| 作者单位： | 1. 华南理工大学机械与汽车工程学院,广州,510640;湛江师范学院物理科学与技术学院,湛江,524048
2. 华南理工大学机械与汽车工程学院,广州,510640 |
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| 基金项目： | 粤港关键领域重点突破项目(东莞专项)，广东省科技攻关项目 |
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| 摘 要： | 针对光照变化、噪声、运动不连续及大位移量等影响基于计算机微视觉的微运动测量精度的问题,提出一种基于同态滤波的鲁棒多尺度微运动测量算法.首先采用同态滤波增强方法对显微视觉图像亮度不均匀进行了校正,并增强对比度,然后利用双权重函数,自动调节不同残差数据点的权重,去除残差过大的数据点,并采用多尺度金字塔由粗到精逐层迭代,精确地估计运动矢量.实验结果显示,新算法鲁棒性好,能有效地减弱光照不均匀的干扰,同时减少噪声和运动不连续而引起的界外值的影响,微运动测量精度达到0.01个像素.
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| 关 键 词： | 计算机微视觉 微运动测量 同态滤波 鲁棒 多尺度 |
Robust multi-scale micro-motion measurement algorithm based on homomorphic filtering |
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| Huang Zan,Zhang Xianmin,Chen Zhong.Robust multi-scale micro-motion measurement algorithm based on homomorphic filtering[J].Chinese Journal of Scientific Instrument,2011,32(2). |
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| Authors: | Huang Zan Zhang Xianmin Chen Zhong |
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| Affiliation: | Huang Zan1,2,Zhang Xianmin1,Chen Zhong1(1 School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China,2 Physics Science and Technology School,Zhanjiang Normal College,Zhanjiang 524048,China) |
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| Abstract: | Aiming at the problems that illumination variation,noise,motion discontinuity and large displacement may badly influence motion estimation precision in micro-motion measurement based on computer microvision,a robust multi-scale micro-motion measurement algorithm based on homomorphic filtering is proposed.Firstly,a homomorphic filtering method for image enhancement is used to correct uneven brightness and enhance contrast.Then biweight function is used to automatically adjust the weights of the data with dif... |
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| Keywords: | computer microvision micro-motion measurement homomorphic filtering robust multiscale |
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