Optical logarithmic transformation of speckle images with bacteriorhodopsin films
Read Online
Share

Optical logarithmic transformation of speckle images with bacteriorhodopsin films

  • 925 Want to read
  • ·
  • 58 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, D.C, Springfield, Va .
Written in English


Book details:

Edition Notes

StatementJohn D. Downie.
SeriesNASA-TM -- 111971., NASA technical memorandum -- 111971.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17595874M
OCLC/WorldCa42710995

Download Optical logarithmic transformation of speckle images with bacteriorhodopsin films

PDF EPUB FB2 MOBI RTF

The application of logarithmic transformations to speckle images is sometimes desirable in converting the speckle noise distribution into an additive, constant-variance noise distribution. The optical transmission properties of some bacteriorhodopsin films are well suited to implement such a transformation optically in a parallel by: 6. Optical set-up for logarithmic transformation of speckle image with BR film. Shutter A is opened during the write process and shutter B is opened during the read process. Optical processing of speckle images with bacteriorhodopsin is closed, shutter B is opened and the beam transmitted through the BR film is imaged into a CCD by: 5. The application of logarithmic transformations to speckle images is sometimes desirable in converting the speckle noise distribution into an additive, constant-variance noise distribution. The optical transmission properties of some bacteriorhodopsin films are well suited to implement such a transformation optically in a parallel : John D. Downie. One particularly common form of multiplicative noise is speckle, for which the logarithmic operation not only produces additive noise, but also makes it of constant variance (signal-independent). I examine the optical transmission properties of some bacteriorhodopsin films here and find them well suited to implement such a pointwise logarithmic transformation optically .

We examine the optical transmission properties of some bacteriorhodopsin films here and find them well suited to implement such a pointwise logarithmic transformation optically in a parallel fashion. We present experimental results of the optical conversion of speckle images into transformed images with additive, signal-independent noise statistics using the real-time photochromic properties of : John D. Downie and Deanne Tucker. Nonlinear Optical Image Processing with Bacteriorhodopsin Polymer Films Article in Molecular Crystals and Liquid Crystals (1) April with 10 Reads How we measure 'reads'. Bacteriorhodopsin based films as a nanomemory (w/v) was illuminated by two orthogonal beams, green laser (vertical) and red laser (horizontal) for 30 minutes. Fig. 1 shows the P state. Although there is no absorption peak before laser beam, however the absorption peak appears at nm after radiation. The bacteriorhodopsin film studied here displays the logarithmic transmission response for write intensities spanning a dynamic range greater than 2 orders of magnitude. 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 .

  Organisms from bacteria to humans sense and react to light. Proteins that contain the light-sensitive molecule retinal couple absorption of light to conformational changes that produce a signal or move ions across a membrane. Nogly et al. used an x-ray laser to probe the earliest structural changes to the retinal chromophore within microcrystals of the ion pump bacteriorhodopsin Cited by: Optical logarithmic transformation of speckle images with bacteriorhodopsin films of logarithmic transformations to speckle images is sometimes desirable in converting the speckle . Photoinduced anisotropy in terms of dichroism and birefringence was investigated in a series of experiments. Measurements and comparisons were made using samples of wild type bacteriorhodopsin and its mutations 3,4-dehydro BR and 4-keto by: 4. 1. Introduction. Bacteriorhodopsin (bR) film possesses optimum properties, such as high photosensitivity, high photochemical and thermal stability, and the lifetime of M state prolonged for different has been used in various logic operations and image processing,,,,,,, and one of extensive applications is photonic switches,,,,.Author: Guiying Y. Chen, Guiying Y. Chen, Xin Liang, Yizhe Yuan, Guang Yang, Chunping Zhang, Tang Xu, Q. W.