Paper
24 September 2007 An EO surveillance system for harbor security
Author Affiliations +
Abstract
Micro USA, Inc. has designed and built an Electro-Optical (EO) system for the detection and surveillance of submerged objects in harbor and open ocean waters. The system consists of a digital camera and advanced image processing software. The camera system uses a custom designed CMOS light sensor array to facilitate the detection of low contrast underwater targets. The software system uses wavelet-based image processing to remove atmospheric and ocean reflectance as well as other noise. Target detection is achieved through a suite of optimal channel prediction algorithms. The novelties of the system are (a) camera calibration routine to remove pixel non-linearities, non-uniformities and lens effect, (b) adaptive algorithms for low-contrast detection. Our system has been tested in San Diego harbor waters and initial results indicate that we can detect small (2 feet diameter), low-reflectance (5%) targets underwater to greater than 2 diffusion depth (DD). This diffusion depth translates to about 25 feet in harbor waters.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. S. Thyagarajan, David Kline, and Arjun Jain "An EO surveillance system for harbor security", Proc. SPIE 6696, Applications of Digital Image Processing XXX, 66960C (24 September 2007); https://doi.org/10.1117/12.731133
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KEYWORDS
Cameras

Image processing

Calibration

Reflectivity

Target detection

Discrete wavelet transforms

Imaging systems

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