| 自动对焦系统中图像非均匀采样的实验研究 |
| |
| 引用本文： | 李奇,冯华君,徐之海.自动对焦系统中图像非均匀采样的实验研究[J].光子学报,2003,32(12):1499-1501. |
| |
| 作者姓名： | 李奇 冯华君 徐之海 |
| |
| 作者单位： | 浙江大学现代光学仪器国家重点实验室,浙江,杭州,310027 |
| |
| 摘 要： | 将非均匀采样运用在自动对焦的窗口选择中,并进行了实验研究.这种方式可以保持中央的高分辨率,并保持较大的视场范围,克服了中央选窗时由于成像主体偏离中央引起的误对焦.同时,大大减少计算对焦评价函数所需的数据,从而加快对焦速度,促进对焦系统的实时化.
|
| 关 键 词： | 非均匀采样 类视网膜模型 自动对焦 图像评价 |
| 收稿时间： | 2003/1/20 |
| 修稿时间： | 2003年1月20日 |
Autofocus System Experiment Study Using Variational Image-sampling |
| |
| Li Qi,Feng Huajun,Xu Zhihai State Key Lab of Modern Optical Instrumentation,Zhejiang University,Hangzhou ,China.Autofocus System Experiment Study Using Variational Image-sampling[J].Acta Photonica Sinica,2003,32(12):1499-1501. |
| |
| Authors: | Li Qi Feng Huajun Xu Zhihai State Key Lab of Modern Optical Instrumentation Zhejiang University Hangzhou China |
| |
| Institution: | Li Qi,Feng Huajun,Xu Zhihai State Key Lab of Modern Optical Instrumentation,Zhejiang University,Hangzhou 310027,China |
| |
| Abstract: | Variational sampling method was introduced into auto-focus and was made a window selection strategy. The sampling model keeps higher resolution in image center part and wider view filed, so can avoid incorrect focus result because of main imaging object′s escaping from image center field. Experiment study was made and some conclusions were acquired. New method reduced data involved in operation computing focus measure and quickened focus speed. |
| |
| Keywords: | Variational sampling Retina-like model Auto-focus Image evaluation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
| 点击此处可从《光子学报》下载免费的PDF全文 |
|
