| 基于高斯曲面拟合的亚像素边缘检测算法 |
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| 引用本文： | 李帅,卢荣胜,史艳琼,刘宁,李楠楠.基于高斯曲面拟合的亚像素边缘检测算法[J].工具技术,2011,45(7):79-82. |
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| 作者姓名： | 李帅 卢荣胜 史艳琼 刘宁 李楠楠 |
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| 作者单位： | 合肥工业大学仪器科学与光电工程学院;合肥工业大学; |
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| 基金项目： | 国家863资助项目(2009AA04Z114) |
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| 摘 要： | 提出了一种基于高斯曲面拟合的亚像素边缘检测算法.该算法首先使用传统Canny算子进行边缘像素级的粗定位,再以粗定位边缘像素为中心取5x5窗口获取梯度幅值,对其进行高斯曲面拟合,在梯度方向上寻找局部极值点,从而达到边缘亚像素级的精细定位的效果.文中介绍了算法的理论依据,给出推导过程,并用螺旋测微器的标准间隙进行实例分析,...
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| 关 键 词： | 边缘检测 高斯曲面 曲面拟合 亚像素 |
Sub-pixel Edge Detection Algorithm Based on Gauss Surface Fitting |
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| Li Shuai,Lu Rongsheng,Shi Yanqiong,Liu Ning,Li Nannan.Sub-pixel Edge Detection Algorithm Based on Gauss Surface Fitting[J].Tool Engineering(The Magazine for Cutting & Measuring Engineering),2011,45(7):79-82. |
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| Authors: | Li Shuai Lu Rongsheng Shi Yanqiong Liu Ning Li Nannan |
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| Affiliation: | Li Shuai,Lu Rongsheng,Shi Yanqiong,Liu Ning,Li Nannan School of Instrmentation Science and Opto-electronic Engineering,Hefei University of Techology,Hefei 23009,China |
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| Abstract: | A sub-pixel edge detection algorithm with 0.02 pixels resolution and O. 1 pixels accuracy based on gauss surface fitting technique is proposed. The coarse-fine algorithm consists of two steps. Firstly, the traditional Canny operator is used to detect the coarse position of an edge .Then, the sub-pixel edge position is determined by the gauss surface fitting around the center of the corresponding coarse position with 5 ×5 pixels window. The sub-pixel edge position is the local peak of the intersection curve between the vertical plane in the gradient direction of the edge and the fitted gauss surface. In the paper, the derivation of the sub-pixel edge detection algorithm is presented. The sub-pixel accuracy is verified by the measurement with standard clearance of micrometer caliper and compared with other traditional subpixel edge detection algorithms. |
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| Keywords: | edge detection gauss surface surface fitting sub-pixel |
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