| 序列图像缩放系数的一种实时估计算法 |
| |
| 引用本文： | 商惠敏,蔡利栋.序列图像缩放系数的一种实时估计算法[J].中国体视学与图像分析,2008,13(1):6-10. |
| |
| 作者姓名： | 商惠敏 蔡利栋 |
| |
| 作者单位： | 暨南大学计算机科学系,广州,510632 |
| |
| 摘 要： | 照相机在靠近或远离目标景物的运动过程中，如保持聚焦中心点不变，则前后两帧图像间存在一致的缩放关系。此时，可根据尺度变化下图像灰度累积投影曲线的特点，分别计算参考帧和当前帧的投影曲线上一对极大一极小值点的坐标差值，以它们的比值作为缩放系数，实现实时求取。最后以实例验证了本算法。
|
| 关 键 词： | 径向运动 缩放系数 灰度投影 图像序列 |
| 文章编号： | 1007-1482(2008)01-0006-05 |
| 修稿时间： | 2007年5月1日 |
Real-time estimation of scale change in sequence images-a spatial domain approach |
| |
| SHANG Huimin,CAI Lidong.Real-time estimation of scale change in sequence images-a spatial domain approach[J].Chinese Journal of Stereology and Image Analysis,2008,13(1):6-10. |
| |
| Authors: | SHANG Huimin CAI Lidong |
| |
| Institution: | (Department of Computer Science, Jinan University, Guangzhou 510632, China) |
| |
| Abstract: | When a camera moves towards the objects, the target images acquired look like to be enlarged. To estimate the scale change of image sequence in real-time, a novel spatial-domain method is proposed. According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve. The differences in position are calculated respectively and the scale change parameter is obtained as the ratio of both differences. Experimental results showed that this method is feasible and efficient. |
| |
| Keywords: | radial motion scale change image gray projection image sequences |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
