数码相机模糊图像的计算机修复-昆明理工大学学报.PDF

30 4 ( ) o.l 30 No4 2005 8 Journal ofKunm ingUniversity of Science andTechnology ( Science andTechnology) Aug. 2005 钱晓凡, 范金萍, 陈弈鹏 ( , 650051) : 针对数码相机获得的模糊图像,分析了图像产生缺陷的主要原因, 以信息光学中的传 函 数为基础,建立了其中三类常见失真图像对应的模型,并在 MATLAB平台上设计出了相应的修 复软件. : 数码相机; 彩色图像;传 函数; 逆滤波器 : O438 : A : 1007- 855X( 2005)04- 0113- 04 Com puter Restoration of Distorted Images Generated by Digital Cam eras Q AI N X ai o-fan, FA N J in-p ni g, CHEN Y -i peng ( Faculty of science, Kunm ing University of Science and Technology, Kunm ing 650051, China) Abstract: Themain reasons for distortion in mi age output of digitalcameras are firstly analyzed. W ith the adop- tion of the transfer functions in information optics, models of three common distortions are set up. Finally, a computer processing program based onMATLAB is developed for restoration. K ey words: digitalcamera; color mi age; transfer function; matched filter 0 ,, , , ( PHOTOSHOP), ,, . 1 : ( 1a); ( 1b); ()( 1c); : 2004- 09- 30. : ( 1963. 7~ ), ,,.: . 114 ( ) 30 : 1) ,, , ,; 2) ,(), ,; 3) , (),; 4) , , ,; 5) , , , ,. 2 21 [ 1~ 5] , . ,, , Moore- Penrose ., , Fourier, Chalmond . . . . :,, ;,, ,. , , , . , MATLAB ,. ,, , , . a,: 1 r h ( r) = 2 circ( ) ( 1) a a : 2J 1 ( 2a ) H ( ) = ( 2)