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《Acta Electronica Sinica》 2003-04
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Implementation of an Automatic Focusing Algorithm Based on Spatial High Frequency Energy and Entropy

KANG Zong-ming,ZHANG Li,XIE Pan(Department of Electronic Engineering,Tsinghua University,Beijing 100084,China)  
A new advanced automatic focusing algorithm is proposed.After discussing the principle how image is blurred by the lens system,we presented spatial high frequency energy and entropy as the sharpness criteria and analyzed their performance detailedly.Aiming at the limitation of conventional MCS,the concept of direction-test frame is proposed.The reliability,speed and sensitivity of auto focus are enhanced by using more definition criteria together and self-adjust step.The proposed algorithm has been successfully tested to be effective on a high definition image processing system developed by the authors.Experimental results demonstrate that the new criteria work according to the fact and the proposed algorithm.
【Fund】: 国家自然科学基金 (No .60 1 72 0 2 7)
【CateGory Index】: TP274.4
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【References】
Chinese Journal Full-text Database 10 Hits
1 LI Qi, FENG Hua-jun, XU Zhi-hai (State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China);Image pre-processing techniques for auto focusing[J];Opto-electronic Engineering;2004-09
2 CUI Ji-wen, TAN Jiu-bin, AO Lei, KANG Wen-jing (Institute of Ultra-precision Optoelectronic Instrument Engineering Harbin Institute of Technology, Harbin 150001,China);Automatic focusing method based on fuzzy control and image processing technique[J];Opto-electronic Engineering;2005-06
3 YUAN Ke,XU Wei-hong(College of Computer & Communications, Changsha University of Science and Technology, Changsha 410076, China);Assistant camera focusing system based on image definition evaluation[J];Opto-Electronic Engineering;2006-01
4 XIE Xiao-fu1,2,ZHOU Jin1,WU Qin-zhang1(1.Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100039,China);An Adaptive Autofocus Method Using No-reference Structural Sharpness[J];Opto-Electronic Engineering;2011-02
5 ZHENG Jia~1 ZHOU Jian-zhong~2 HE Da-hua~1 ( 1 Huazhong Institute of Electro-Optics—Wuhan National Laboratory for Optoelectronics, Wuhan 430073, China; 2 Unit 91404 of PLA, Qinhuangdao 066001, China );Fast Auto-Focusing Algorithm Based on Video Image Processing[J];Optics & Optoelectronic Technology;2010-03
6 YAO Min WU Zheng-nan (Electronics & Information School of Donghu College.Wuhan University,Wuhan 430212.China );An Anti-Nosie Algorithm to Auto-Focusing[J];Optics & Optoelectronic Technology;2011-02
7 ZHU Zheng-tao~(1,2),LI Shao-fa~1,CHEN Hua-ping~2 (1.College of Computer Science and Engineering, South China Univ. of Tech., Guangzhou 510640,China;2.College of Information Engineering, Guangdong Univ. of Tech., Guangzhou 510640,China);Research on auto-focused function based on the image entropy[J];Optics and Precision Engineering;2004-05
8 LIU Rui-an1,2,JIN Shi-jiu1,WU Xiao-rong2,ZHANG Xi-kun2 (1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072,China;2.College of Physics and Electronic Information Science,Tianjin Normal University,Tianjin 300074,China);Adaptive regulation of CCD camera in eye gaze tracking system[J];Optics and Precision Engineering;2007-06
9 WANG Qian,SONG En-min,XU Xiang-yang,LIU Hong(School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China);Auto-focusing function for microscope image based on weighted neighborhood correlation[J];Optics and Precision Engineering;2008-01
10 ZHOU Xian,JIANG Wei(School of Information Science and Engineering,Shandong University,Jinan 250100,China);Auto-focus algorithm based on image edge energy[J];Optical Technique;2006-02
China Proceedings of conference Full-text Database 3 Hits
1 Zhang Peng Cao Xuedong Wu Shibin (The institute of optics and electronics of the Chinese academy of sciences of technology,Chengdu 610209,China);Sharp focus method of micro-lens and its validation[A];[C];2010
2 HAN Ke~(1) JIANG Xue-mei~(1) FENG Quail~(2) ZHU Xiu-chang~(2) (1)(institute of Forensic Science,Ministry of Public Security,Beijing 100038) (2)(Image Processing and Image Communication Key Lab,Nanjing University of Posts and Telecommunications,Nanjing 210003);An Auto-focusing Method Based on Adaptive Evaluation Function for Many Object Distance Conditions[A];[C];2008
3 ZHANG Xi-Kun~1 LIU Rui-An~(1,2) HOU Jie~1 LI Wen-Qing~2 (1.Department of Physics and electronic information,Tianjin Normal University,Tianjin 300074,China; 2.University of Science CAUC,Tianjin 300300,China);Automatic Adjusting and Controlling of CCD objective in eye-gaze tracking system[A];[C];2007
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 ZHU Kong-feng(School of Electronic Science and Technology,Anhui University,Hefei 230039,China);An algorithm of focusing region selection for auto-focusing[J];Journal of Anhui University(Natural Sciences);2009-02
2 LIU Yong-shun,WANG Jin (Department of Electricity &Electronics Information Engineering,Anyang Normal University,Anyang 455000,China);The Developing of Modern Electronic Measuring Instrument[J];Journal of Anyang Normal University;2008-02
3 WAN Chun ming, TONG Shou feng (Changchun Institute of Optics and Fine Mechanics, Changchun 130022, CHN);Analysis on Testing Principle for Modulation Transfer Function of CCD Camera[J];Semiconductor Optoelectronics;2002-01
4 HU Tao,CHEN Shi-zhe,LIU Guo-dong,PU Zhao-bang(Department of Automatic Measurement and Control,Harbin Institute of Technology,Harbin 150001,CHN);Selection of Auto-focus Function in Micro Visual System[J];Semiconductor Optoelectronics;2006-02
5 Zhang Caixia (College of Sciences,North China Univ.of Tech.,100041,Beijing,China);Some Conditions About Multiple Solutions of P3P Problem[J];Journal of North China University of Technology Beijing China;2007-03
6 FAN Jian-ying, YU Xiao-yang, LIU Bo, XU Wan-li (College of Instrument and Meter, HUST, Ha'erbin 150080, China);Development of 3D-Vision Sensing Technique[J];ORDNACE INDUSTRY AUTOMATION;2000-02
7 Wang Zhaoba (Research Center for NDT, North China Institute of Technology, Taiyuan, 030051);EFFECT OF CENTER DEVIATION ON CT RECONSTRUCTION IMAGES[J];Acta Armamentarii;2001-03
8 Guo Jun Zeng Wenhan Xie Tiebang (School of Mechanical Science & Engineering, Huazhong University of Science & Technology, Wuhan, 430074);A BULLET MARK COMPUTER IMAGE COMPARISON SYSTEM[J];Acta Armamentarii;2003-04
9 ZENG Qing-hu1,QIU Jing1,LIU Guan-jun1,MIAO Qiang2(1.Institute of Mechantronics Engineering,NUDT,Changsha 410073,Hunan,China; 2.School of Mechatronics Engineering,University of Electronic Science and Technology,Chengdu 610054,Sichuan,China);The Study of Equipment Degradation State Recognition Method Based on KPCA-HSMM[J];Acta Armamentarii;2009-06
10 YU Dong, LI Xiao-ying, Lü Nai-guang, DENG Wen-yi(Department of Electronic Information Engineering,Beijing Institute of Machinery,Beijing 100085,China);The Auto-focus technique for digital MTF measurement system[J];Journal of Beijing Institute of Machinery;2004-04
China Proceedings of conference Full-text Database 2 Hits
1 Li Xiaoying Yu Dong (The Beijing Institute of Machinery Beijing 100085);透镜调制传递函数测量中的对焦问题研究[A];[C];2004
2 Feng Huajun, Li Qi, Xu Zhihai State Key Lab of Modern Optical Instrumentation Zhejiang University, Hangzhou, 310027;Auto-Focus technique in digital imaging systems[A];[C];2004
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 ZHU Kong-feng(School of Electronic Science and Technology,Anhui University,Hefei 230039,China);An algorithm of focusing region selection for auto-focusing[J];Journal of Anhui University(Natural Sciences);2009-02
2 WANG Jian-hua,DENG Hua-qiu,CHEN Can-ning(Department of Physics,South China University of Technology,Guangzhou 510640,China);Research on search algorithm for digital auto-focus[J];Transducer and Microsystem Technologies;2012-05
3 HAN Li-yan,WANG Li-ming,LIU Bin (Institute of signal capturing and processing,North University of China, Taiyuan 030051,China);Depth measuring method based on using Edge Spread Function to describe defocusing degrees of images[J];Sensor World;2011-02
4 LV Pei-yu1,ZHANG Chun-sen1,WANG Yan-liang2,LV Jing-fan3(1.Xi'an University of Science and Technology,Xi'an 710054,China;2.School of Surveying and Mapping Engineering,Heilongjiang Institute of Technology,Harbin 150050,China;3.Jilin Institute of Geographic Information Engineering,Changchun 130051,China);The application of sight mouse in map scanning[J];Engineering of Surveying and Mapping;2012-02
5 WANG Chuanzhong,MO Lingshan(Information Engineering College,Nanchang Hangkong University,Nanchang 330063,China);Sharpness Measurement for Microscopic Cell Image of Variable Content[J];Journal of Test and Measurement Technology;2012-02
6 WANG Xin,LIU Chang(College of Computer Science and Technology,Changchun University of Technology,Changchun 130012,China);Algorithm of image definition evaluation based on lifting wavelet transform[J];Journal of Northeast Normal University(Natural Science Edition);2009-04
7 LIN Zhaohua1,2,LIU Xin1,WANG Lan1,ZHANG Shumei1(1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Science,Changchun 130033,China; 2.Graduate School,Chinese Academy of Sciences,Beijing 100039,China);Application of MSP430 in Autofocus System of Theodolite[J];Electronics Optics & Control;2011-01
8 FU Chunhe,WEI Xiangying,SUN Mingrui,SONG Lijuan (The 45th Institute of CETC,Beijing East Yanjiao,101601 China);Designing and Realizing of Auto-Focus and Adjusting Magnification Based on PCB AOI[J];Equipment for Electronic Products Manufacturing;2010-03
9 GAO Jinlong,ZHANG Ju,GAO Yang,ZHOU Jiansheng(CETC Beijing Electronic Equipment CO.,LTD,Beijing 100176,China);Image Auto Alignment of Automatic Dicing Saw[J];Equipment for Electronic Products Manufacturing;2010-11
10 LIU Xiaobin,TU Dianliu,CHAI Bin,SHAN Fuyuan(The 45th Research Institute of CETC,Beijing 101601,China);An Analysis of the Automatic focusing System of the Grinding Wheel Dicing Saw[J];Equipment for Electronic Products Manufacturing;2011-02
China Proceedings of conference Full-text Database 5 Hits
1 Zhang Xinjie Xie Zhedong (1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun Jilin 130033,China;2.College of Engineering and Technology,Jilin Agricultural University,Changchun Jilin 130018,China);Research on the system of video-extensometer used to high precision measurement[A];[C];2011
2 WANG Kun, GAO Li-qun (College of Information Science and Engineering, Northeastern University, Shenyang 110004, China.;A New Approach for Image Quality Estimate[A];[C];2006
3 Liang Min hua Cheng Tao (1 Changchun Institute of Optics,Fine Mechanics and Physics Changchun 130022 China; 2 Graduate School of the Chinese Academy of Sciences Beijing 100039 China);Research on Substitution of CMOS Camera for Cinematograph[A];[C];2008
4 HAN Ke~(1) JIANG Xue-mei~(1) FENG Quail~(2) ZHU Xiu-chang~(2) (1)(institute of Forensic Science,Ministry of Public Security,Beijing 100038) (2)(Image Processing and Image Communication Key Lab,Nanjing University of Posts and Telecommunications,Nanjing 210003);An Auto-focusing Method Based on Adaptive Evaluation Function for Many Object Distance Conditions[A];[C];2008
5 ZHANG Xi-Kun~1 LIU Rui-An~(1,2) HOU Jie~1 LI Wen-Qing~2 (1.Department of Physics and electronic information,Tianjin Normal University,Tianjin 300074,China; 2.University of Science CAUC,Tianjin 300300,China);Automatic Adjusting and Controlling of CCD objective in eye-gaze tracking system[A];[C];2007
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