Mr. Christopher J. Kennedy Profile

Christopher J. Kennedy

at Georgia Tech Research Institute

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Proceedings Article | 22 May 2015 Paper

STAC: a comprehensive sensor fusion model for scene characterization

Zsolt Kira, Alan Wagner, Chris Kennedy, Jason Zutty, Grady Tuell

Proceedings Volume 9498, 949804 (2015) https://doi.org/10.1117/12.2178494

KEYWORDS: Cognitive modeling, Sensors, Data modeling, Data fusion, Cognition, Sensor fusion, Algorithm development, Visualization, Detection and tracking algorithms, Cameras

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We are interested in data fusion strategies for Intelligence, Surveillance, and Reconnaissance (ISR) missions. Advances in theory, algorithms, and computational power have made it possible to extract rich semantic information from a wide variety of sensors, but these advances have raised new challenges in fusing the data. For example, in developing fusion algorithms for moving target identification (MTI) applications, what is the best way to combine image data having different temporal frequencies, and how should we introduce contextual information acquired from monitoring cell phones or from human intelligence? In addressing these questions we have found that existing data fusion models do not readily facilitate comparison of fusion algorithms performing such complex information extraction, so we developed a new model that does. Here, we present the Spatial, Temporal, Algorithm, and Cognition (STAC) model. STAC allows for describing the progression of multi-sensor raw data through increasing levels of abstraction, and provides a way to easily compare fusion strategies. It provides for unambiguous description of how multi-sensor data are combined, the computational algorithms being used, and how scene understanding is ultimately achieved. In this paper, we describe and illustrate the STAC model, and compare it to other existing models.

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