| 一种改进的Harris角点检测算法 |
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| 引用本文： | 龚平,刘相滨,周鹏. 一种改进的Harris角点检测算法[J]. 计算机工程与应用, 2010, 46(11): 173-175. DOI: 10.3778/j.issn.1002-8331.2010.11.053 |
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| 作者姓名： | 龚平 刘相滨 周鹏 |
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| 作者单位： | 湖南师范大学图像识别与计算机视觉研究所,长沙,410081 |
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| 基金项目： | 湖南省自然科学基金No.07JJ6130;;湖南省教育厅资助科研项目No.06B058~~ |
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| 摘 要： | 图像拼接中，提高角点检测的精确度可以提高配准的精度。在Harris算法的基础上，提出了一种改进的角点检测算法，算法首先分别对图像中每行、每列上所有像素点的Rharris进行X、Y方向的曲线拟合，然后对拟合后的曲线进行分析，若某个像素点的Rharris值在两个方向上都处于“波峰”位置，则将该像素点检测为角点。实验结果表明该算法可以避免阈值的选择，有效地克服了阈值选择不当造成的角点冗余或丢失，提高了角点检测的精度。
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| 关 键 词： | Harris算子 角点检测 曲线拟合 自由度 |
| 收稿时间： | 2008-09-19 |
| 修稿时间： | 2008-12-3 |
Improved Harris-based corner detection algorithm |
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| GONG Ping,LIU Xiang-bin,ZHOU PengInstitute of Image Recognition , Computer Vision,Hunan Normal University,Changsha ,China. Improved Harris-based corner detection algorithm[J]. Computer Engineering and Applications, 2010, 46(11): 173-175. DOI: 10.3778/j.issn.1002-8331.2010.11.053 |
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| Authors: | GONG Ping LIU Xiang-bin ZHOU PengInstitute of Image Recognition & Computer Vision Hunan Normal University Changsha China |
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| Affiliation: | GONG Ping,LIU Xiang-bin,ZHOU PengInstitute of Image Recognition & Computer Vision,Hunan Normal University,Changsha 410081,China |
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| Abstract: | Improving the precision of corner detection can get higher precision of image registration in image mosaics.An improved Harris-based corner detection algorithm is presented in the paper.It makes curve fitting to the RHarris values of all pixels in every line on x-direction and every column on y-direction of the image respectively based on the Harris algorithm.And then,the curve is analyzed.When the RHarris value of a certain pixel is at the wave peak position on both x and y direction,it is detected as a co... |
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| Keywords: | Harris operator corner detection curve fitting degree of freedom |
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