Digital Autofocusing Method Based on Contourlet Transform  

作　　者：JIANG Gang-yi YI Wen-juan YU Mei YANG Ming 

机构地区：[1]Faculty oflnformation Science and Engineering, Ningbo University, Ningbo 315211, China [2]China Mobile Shenzhen Limited, Shenzhen 518048, China [3]National Key Laboratory of Machine Perception, Peking University, Beijing 100871, China

出　　处：《Optoelectronics Letters》2007年第5期381-384,共4页光电子快报（英文版）

基　　金：This work was supported by the National Natural Science Founda-tion of China (grant No.60472100, 60672073);Natural ScienceFoundation of Zhejiang Province (grant RC01057, Y105577);the Key Project of Chinese Ministry of Education (grant No.206059).

摘　　要：The autofocusing technique based on contourlet transform is discussed in this paper and an autofocusing method is proposed for images with much information in certain directions. The experimental results show that the proposed method can focus accurately and the sensitivity ratio is higher than that of the other autofocusing methods based on conventional image processing

关 键 词：图象处理 自动对焦 数字技术 信号传输 

分 类 号：TN911.73[电子电信—通信与信息系统]