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题名:
A novel auto-focus function
作者: Wang, Jian1,2; Chen, Hong-Bin1
出版日期: 2012
会议名称: Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing
会议日期: 2012
DOI: 10.1117/12.970405
通讯作者: Wang, J.
中文摘要: The one key problem of passive auto-focus technique based on image is image definition criterion which is estimated by auto-focus function.This paper analyzes the limitation of traditional spatial domain auto-focus functions which are not sensitive to small changes of images,and presents a new auto-focus evaluation function which uses the combination filters to strengthen the image medium-frequency information.In order to evaluate the new function performance,the parameters of unimodality,accuracy,sensitivity,calculating cost are compared and analyzed.Compared with the traditional spatial domain evaluation functions,such as Brenner function,Laplacian function and Tenengrad function,the experimental results show that the new function has a fast calculation speed,and has a high sensitivity. © 2012 SPIE.
英文摘要: The one key problem of passive auto-focus technique based on image is image definition criterion which is estimated by auto-focus function.This paper analyzes the limitation of traditional spatial domain auto-focus functions which are not sensitive to small changes of images,and presents a new auto-focus evaluation function which uses the combination filters to strengthen the image medium-frequency information.In order to evaluate the new function performance,the parameters of unimodality,accuracy,sensitivity,calculating cost are compared and analyzed.Compared with the traditional spatial domain evaluation functions,such as Brenner function,Laplacian function and Tenengrad function,the experimental results show that the new function has a fast calculation speed,and has a high sensitivity. © 2012 SPIE.
收录类别: Ei
语种: 英语
卷号: 8420
ISSN号: 0277786X
文章类型: 会议论文
页码: 842012
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7387
Appears in Collections:光电工程总体研究室(一室)_会议论文

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作者单位: 1. Institute of Optics and Electronics, Chinese Academy of Engineering, Chengdu, 610209, China
2. Graduate University, Chinese Academy of Sciences, Beijing, 100049, China

Recommended Citation:
Wang, Jian,Chen, Hong-Bin. A novel auto-focus function[C]. 见:Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing. 2012.
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