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Study of active millimeter-wave image speckle reduction by Hadamard phase pattern illumination.
- Source :
-
Journal of the Optical Society of America. A, Optics, image science, and vision [J Opt Soc Am A Opt Image Sci Vis] 2008 Feb; Vol. 25 (2), pp. 312-7. - Publication Year :
- 2008
-
Abstract
- Active millimeter-wave images typically exhibit characteristic speckle noise, due to the coherence of artificial millimeter-wave sources. We study the Hadamard speckle contrast reduction (SCR) technique, which has been successfully used in laser projection systems, in the context of millimeter-wave imaging. We show the impact of Hadamard pattern order and size and of image and pattern resolution on speckle reduction efficiency. Practical limitations of Hadamard pattern implementations and their effect on speckle reduction efficiency are also discussed.
Details
- Language :
- English
- ISSN :
- 1084-7529
- Volume :
- 25
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of the Optical Society of America. A, Optics, image science, and vision
- Publication Type :
- Academic Journal
- Accession number :
- 18246164
- Full Text :
- https://doi.org/10.1364/josaa.25.000312