NONLINEAR COHERENT OPTICAL-IMAGE PROCESSING USING LOGARITHMIC TRANSMITTANCE OF BACTERIORHODOPSIN FILMS

被引:10
作者
DOWNIE, JD
机构
[1] NASA, Ames Research Center, Moffett Field, CA, 94035
来源
APPLIED OPTICS | 1995年 / 34卷 / 23期
关键词
D O I
10.1364/AO.34.005210
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The transmission properties of some bacteriorhodopsin-film spatial light modulators are uniquely suited to allow nonlinear optical image-processing operations to be applied to images with multiplicative noise characteristics. A logarithmic amplitude-transmission characteristic of the film permits the conversion of multiplicative noise to additive noise, which may then be linearly filtered out in the Fourier plane of the transformed image. I present experimental results demonstrating the principle and the capability for several different image and noise situations, including deterministic noise and speckle. The bacteriorhodopsin film studied here displays the logarithmic transmission response for write intensities spanning a dynamic range greater than 2 orders of magnitude.
引用
收藏
页码:5210 / 5217
页数:8
相关论文
共 24 条
[1]   INTEGRAL EXPRESSION FOR TRANSFORMING SIGNAL-DEPENDENT NOISE INTO SIGNAL-INDEPENDENT NOISE [J].
ARSENAULT, HH ;
DENIS, M .
OPTICS LETTERS, 1981, 6 (05) :210-212
[2]   PROPERTIES OF SPECKLE INTEGRATED WITH A FINITE APERTURE AND LOGARITHMICALLY TRANSFORMED [J].
ARSENAULT, HH ;
APRIL, G .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1976, 66 (11) :1160-1163
[3]   PHOTOPHYSICS AND MOLECULAR ELECTRONIC APPLICATIONS OF THE RHODOPSINS [J].
BIRGE, RR .
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1990, 41 :683-733
[4]   OPTICAL APPLICATIONS OF BACTERIORHODOPSIN AND ITS MUTATED VARIANTS [J].
BRAUCHLE, C ;
HAMPP, N ;
OESTERHELT, D .
ADVANCED MATERIALS, 1991, 3 (09) :420-428
[5]   OPTIMAL CORRELATION FILTERS FOR IMAGES WITH SIGNAL-DEPENDENT NOISE [J].
DOWNIE, JD ;
WALKUP, JF .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1994, 11 (05) :1599-1609
[6]   REAL-TIME HOLOGRAPHIC IMAGE CORRECTION USING BACTERIORHODOPSIN [J].
DOWNIE, JD .
APPLIED OPTICS, 1994, 33 (20) :4353-4357
[7]   OPTICAL LOGARITHMIC TRANSFORMATION OF SPECKLE IMAGES WITH BACTERIORHODOPSIN FILMS [J].
DOWNIE, JD .
OPTICS LETTERS, 1995, 20 (02) :201-203
[8]  
Goodman J W, 1968, INTRO FOURIER OPTICS, P142
[9]  
GOODMAN JW, 1975, TOP APPL PHYS, V9, P10
[10]  
GOODMAN JW, 1985, STATISTICAL OPTICS, P350