| 空间滤波器截止频率对三维形貌测量精度的影响 |
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| 引用本文： | 宁韩利.空间滤波器截止频率对三维形貌测量精度的影响[J].光电子．激光,2011(2):272-276. |
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| 作者姓名： | 宁韩利 |
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| 作者单位： | 天津理工大学电子信息工程学院;天津理工大学计算机学院; |
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| 基金项目： | 天津市科委自然科学基金资助项目(06YFJMC15600) |
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| 摘 要： | 分析了在三维形貌测量中,对结构光调制图像进行低通滤波时,截止频率的选取对三维形貌测量精度的影响,并给出了三维形貌测量精度的处理过程和结果.对带有结构光调制的图像进行不同截止频率的空间滤波处理和比较.实验结果表明,该方法可以提高三维形貌测量的精度.
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| 关 键 词： | Butterworth 低通滤波器 截止频率 三步相移法 三维形貌测量 |
Influence of cut-off frequency of spatial filter on the accuracy of 3-D profile measurement |
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| NING Han-li.Influence of cut-off frequency of spatial filter on the accuracy of 3-D profile measurement[J].Journal of Optoelectronics·laser,2011(2):272-276. |
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| Authors: | NING Han-li |
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| Affiliation: | NING Han-li1,SUN Jie1,XU Zhong-qi1,YANG Ming1,TIAN Jing2(1.School of Electronic Information Engineering,Tianjin University of Technology,Tianjin 300191,China,2.School of Computer Science,China) |
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| Abstract: | In 3-D profile measurement,when the modulated image by the structure light was processed by low-pass filter,the influence of cut-off frequency on the accuracy of 3-D profile measurement was analyzed in this paper,and the treatment process and results of 3-D profile measurement were presented.The modulated image by the structure light was processed by spatial filtering with different cut-off frequencies and the results were compared.Experimental results show that this method can enhance the accuracy of 3-D p... |
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| Keywords: | Butterworth low-pass filter cut-off frequency three-step phase shift method 3-D profile measurement |
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