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In this paper, several methods to register and stabilize a motion imagery video sequence under the layered sensing concept are evaluated. Utilizing the layered sensing paradigm, an area is surveyed by a multitude of sensors at many different altitudes and operating across many modalities. Utilizing a combination of sensors provides better insight into a situation than could ever be achieved with a...
This paper discusses the performance comparison of different algorithms for classification, estimation and filtering problems. Two information theoretic measures, namely, the empirical mutual information and the asymptotic information rate are proposed for simulation based performance evaluation and algorithm comparison. They can be used as a guideline for designing a practical procedure to measure...
Users require information fusion to reduce dimensionality for real world, complex decision-making. Typically, researchers design fusion systems based on limited data that does not capture all operating conditions seen in the real world (i.e. weather for video sensors). Fusion systems are of limited use when presented with poor data, inappropriate models, and unrealistic assumptions. Decision makers...
Image fusion developments has paved way for new approaches like image overlay, image sharpening, and image cueing through pixel, feature, or region/shape combinations. The applicability of these new techniques differs on the image content, contextual information, and generalized metrics of image fusion gain. An image fusion gain can be assessed relative to information gain or entropy reduction. In...
Recent developments in image fusion have produced a variety of approaches like image overlay, image sharpening, and image cueing through pixel, feature, or region/shape combinations. The applicability of these approaches and techniques differ on the image content, contextual information, and generalized metrics of image fusion gain. An image fusion gain can be assessed relative to information gain...
Distributed image steganography (DIS) (Y.S. Wu et al., 2004) is a new method of concealing secret information in several host images, leaving smaller traces than conventional steganographic techniques, and requiring a collection of affected images for secret information retrieval. Fusion system designs of the future will require enhanced security measures for distributed data communication. DIS, compared...
This paper presents a new probabilistic approach to determine survivability of reconfigurable systems as a system-level performance metric in an operational environment. In contrast to known methods of estimating survivability in terms of susceptibility and vulnerability, the proposed method (1) includes directional threats on various subsystems into the analysis and (2) provides a framework for operational...
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