Digital preprocessing techniques for GLORIA II sonar images |
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| Authors: | Richard L. Miller Fa S. Dwan Chiu-Fu Cheng |
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| Affiliation: | (1) NASA/Science and Technology Laboratory, HA10 Building 1100, John C. Stennis Space Center, 39529, Mississippi, USA;(2) Geodynamics Research Institute and Department of Geophysics, Texas A&M University, 77843 College Station, Texas, USA;(3) Lockheed Engineering and Sciences Company, Building 1210, John C. Stennis Space Center, 39529, Mississippi, USA |
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| Abstract: | Image processing techniques are discussed that correct distortions in GLORIA II side scan sonar imagery including water column offset, slant-range distortion, multiple returns, aspect ratio, speckle noise, striping, and cross-track power drop-off. The software operates within NASA's ELAS image processing system and is applied to the original 12-bit GLORIA II data. Procedures are discussed for generating large scale mosaics and three-dimensional overlays with sea floor bathymetry. The results are shown in four sonographs acquired off the southern coast of California. |
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