| 一种改进的Zernike正交矩亚像素边缘检测算法 |
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| 引用本文： | 李金泉,王建伟,陈善本,吴林. 一种改进的Zernike正交矩亚像素边缘检测算法[J]. 光学技术, 2003, 29(4): 500-503 |
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| 作者姓名： | 李金泉 王建伟 陈善本 吴林 |
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| 作者单位： | 1. 哈尔滨工业大学,现代焊接与生产技术国家重点实验室,黑龙江,哈尔滨,150001
2. 上海交通大学,焊接工程研究所,上海,200030 |
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| 基金项目： | 国家自然科学基金资助项目(59635160,59575057) |
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| 摘 要： | 在分析Ghosal提出的基于Zernike正交矩亚像素边缘检测算法的基础上,对Ghosal算法进行了改进。指出了Ghosal算法的两点不足,即没有考虑模板效应和没有考虑边缘梯度方向上的一阶导数模型。针对这种不足提出了改进方法。改进后的算法在计算边缘亚像素坐标时更准确,同时还具有细化边缘的能力,使边缘定位更精确。
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| 关 键 词： | 边缘检测 模板效应 亚像素 Zernike正交矩 |
| 文章编号： | 1002-1582(2003)04-0500-04 |
| 修稿时间： | 2002-12-03 |
Improved algorithm of subpixel edge detection using Zernike orthogonal moments |
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| Abstract: | Ghosal algorithm is improved, which is based on analyzing an algorithm of subpixel edge detection presented by Ghosal. It is pointed that Ghosal algorithm has two the shortcomings: not to consider the model effect and the first derivative model of the edge along the gradient direction of the edge. The improved method is presented aiming at the shortcomings. The subpixel coordinates of the edge calculated by the improved algorithm are more precise, and the improved algorithm has the ability of the thinning edge and the accurately locating edge. |
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| Keywords: | edge detection model effect subpixel Zernike orthogonal moment |
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