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| 基于亚像素边缘的椭圆中心检测方法研究 |
| Detection method of ellipse center based on sub-pixel edge |
| 投稿时间:2014-04-24 |
| DOI:10.3969/j.issn.1005-5630.2014.06.003 |
| 中文关键词: 边缘检测 高斯拟合 亚像素 最小二乘 |
| 英文关键词:edge detection Gauss fitting sub-pixel least square |
| 基金项目: |
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| 中文摘要: |
| 在椭圆边缘粗定位的基础上,根据椭圆粗定位信息及图像边缘梯度方向附近点的灰度分布特征,进行高斯拟合获取精确的亚像素边缘点,对亚像素边缘点进行最小二乘拟合,得到精确的椭圆中心位置。实验证明,该算法对椭圆中心定位精度和稳定性有较大提高,并有很好的实时性。 |
| 英文摘要: |
| Based on coarse positioning information of the ellipse and gray distribution features of the point near the image edge of gradient direction, Gauss fitting is used to obtain accurate sub-pixel edge points. By using the least-square fitting of the sub-pixel edge, the ellipse's center position is obtained. Experimental results proved the efficiency and stability of the algorithm to ellipse center accurate positioning, and has a good real-time performance. |
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