| 一种抗噪声的图像自动对焦算法 |
| |
| 引用本文： | 姚敏,吴政南. 一种抗噪声的图像自动对焦算法[J]. 光学与光电技术, 2011, 9(2): 41-45 |
| |
| 作者姓名： | 姚敏 吴政南 |
| |
| 作者单位： | 武汉大学东湖分校电信学院,湖北武汉,430212 |
| |
| 摘 要： | 传统的图像自动对焦算法易受环境噪声影响,导致焦距评价函数的单峰性、无偏性和灵敏度降低.提出了一种基于噪声抑制的图像自动对焦算法,采用Sobel算子加权滤波抑制噪声,再利用全局门限分割边缘像素,最后用四种算子作为对焦评价函数,得出对焦曲线.实验表明,该算法具有较好的抗噪声性能.
|
| 关 键 词： | 自动对焦 噪声 门限 评价函数 |
An Anti-Nosie Algorithm to Auto-Focusing |
| |
| YAO Min,WU Zheng-nan. An Anti-Nosie Algorithm to Auto-Focusing[J]. optics&optoelectronic technology, 2011, 9(2): 41-45 |
| |
| Authors: | YAO Min WU Zheng-nan |
| |
| Affiliation: | (Electronics & Information School of Donghu College.Wuhan University,Wuhan 430212.China ) |
| |
| Abstract: | Conventional auto-fousing algorithms are usually influenced by envoriment noise,which reduces the single apex、urbias and seneitivity of foucsing function.A noise suppressing algorithm to auto-focusing is proposed,which suppresses noise with the Sobel filtering detector and global threshod to separate the edge pixels.The focusing curves are plotted from the sequcen images with four detecors.Experiments show that the method has strong performance of anti-noise. |
| |
| Keywords: | auto-foucsing noise threshold foucsing function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
