| 一种基于频谱分析的离焦深度自动对焦法 |
| |
| 引用本文： | 裴锡宇,冯华君,李奇,徐之海.一种基于频谱分析的离焦深度自动对焦法[J].光电工程,2003,30(5):62-65. |
| |
| 作者姓名： | 裴锡宇 冯华君 李奇 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： | 通过计算2幅不同离焦位置的图像频谱的径向分布,推算出目标物体的离焦深度,从而调 整镜头位置完成自动对焦。算法适用于任意目标物体,尽管是基于频谱的,但是并不需要计算离焦图像的频谱,算法精度可达4%,鲁棒性良好。
|
| 关 键 词： | 图像处理 频谱分析 自动对焦 离焦深度法 |
| 文章编号： | 1003-501X(2003)05-0062-04 |
| 收稿时间： | 2002/11/11 |
| 修稿时间： | 2002年11月11 |
A Depth from Defocus Auto-Focusing Method Based on Frequency Analysis |
| |
| PEI Xi-yu,FENG Hua-jun,LI Qi,XU Zhi-hai.A Depth from Defocus Auto-Focusing Method Based on Frequency Analysis[J].Opto-Electronic Engineering,2003,30(5):62-65. |
| |
| Authors: | PEI Xi-yu FENG Hua-jun LI Qi XU Zhi-hai |
| |
| Abstract: | A depth from defocus of target is calculated through calculating the radial distributions of frequency spectra of 2 frames of image with different defocusing positions, thus adjusts the lens position and finishes auto-focusing. The algorithm is suitable for any target. It is based on frequency spectrum but the frequency spectrum of a defocusing image is not needed to calculate. The algorithm accuracy can be as high as 4% and its robustness is good. |
| |
| Keywords: | Image processing Frequency spectral analysis Automatic focusing Depth from defocus |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
