| 刘宇斌.一种分阶段的高精度亚像素特征点提取方法[J].南华大学学报(自然科学版),2006,20(2):54~57.[.A Method of Extracting Highly Accurate Subpixel Features by Stages[J].Journal of University of South China(Science and Technology),2006,20(2):54~57.] |
| 一种分阶段的高精度亚像素特征点提取方法 |
| A Method of Extracting Highly Accurate Subpixel Features by Stages |
| 修订日期：2006-04-17 |
| DOI： |
| 中文关键词: 图像处理 特征提取 亚像素 |
| 英文关键词:image processing,feature extracting,subpixel |
| 基金项目: |
| 刘宇斌 |
| 湖南工业大学研究生处,湖南株洲412000 |
| 摘要点击次数: 827 |
| 全文下载次数: 4 |
| 中文摘要: |
| 基于图像信息的目标跟踪问题中,对目标特征的精确提取与识别是极为重要的.本文针对点状特征的提取,采用了一种分阶段的高精度亚像素特征点提取方法.具体做法是：首先,利用Harris算子,获得像素级特征点;然后利用像素级特征点附近亮度值的梯度信息,进行亚像素级特征提取.实验结果表明,这种分阶段实现的亚像素级特征提取方法可以保证提取到尽可能多且位置精确的的亚像素级特征点. |
| 英文摘要: |
| Aiming at the need of point feature extraction,a method of extracting highly accurate subpixel feature point by stages was adopted.Firstly,pixel feature points were obtained by applying Harris arithmetic;And then subpixel feature points can be picked up by using the luminance grade information near these pixel feature points.All outcomes of experiments show that precise and quite exact subpixel feature points can be assuringly obtained by using the method put forward in this paper. |
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