Optical Logarithmic Transformation of Speckle Images with Bacteriorhodopsin Films
- Downie, John D.
- Jan. 15, 1995.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- 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 fashion. I present experimental results of the optical conversion of a speckle image into a transformed image with signal-independent noise statistics, using the real-time photochromic properties of bacteriorhodopsin. The original and transformed noise statistics are confirmed by histogram analysis.
- Document ID: 19970010771.
Accession ID: 97N15921.
Optics Letters(ISSN 0146-9592); Volume 20; No. 2; 201-203.
- No Copyright.
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