Abstract: Vehicle tracking in adverse environments is a challenging problem because of the high number of factors constraining their motion and possibility of frequent occlusion. In such conditions, identification rates drop dramatically. Hyperspectral imaging is known to improve the robustness of target identification by recording extended data in many wavelengths. However, it is impossible to transmit such a high rate data in real time with a conventional full hyperspectral sensor. Thus, we present a persistent ground-based target tracking system, taking advantage of a state-of-the-art, adaptive, multi-modal sensor controlled by Dynamic Data Driven Applications Systems (DDDAS) methodology. This overcomes the data challenge of hyperspectral tracking by only using spectral data as required. Spectral features are inserted in a feature matching algorithm to identify spectrally likely matches and simplify multidimensional assignment algorithm. The sensor is tasked for spectra acquisition by the prior estimates from the Gaussian Sum Filter and foreground mask generated by the background subtraction. Prior information matching the target features is used to tackle false negatives in the background subtraction output. The proposed feature-aided tracking system is evaluated in a challenging scene with a realistic vehicular simulation.

Abstract: Human-machine interaction mixed initiatives require a pragmatic coordination between different systems. Context understanding is established from the content, analysis, and guidance from query-based coordination between users and machines. Inspired by Level 5 Information Fusion ‘user refinement’, a live-video computing (LVC) structure is presented for user-based query access of a data-base management of information. Information access includes multimedia fusion of query-based text, images, and exploited tracks which can be utilized for context assessment, content-based information retrieval (CBIR), and situation awareness. In this paper, we explore new developments in dynamic data-driven application systems (DDDAS) of context analysis for user support. Using a common image processing data set, a system-level time savings is demonstrated using a query-based approach in a context, control, and semantic-aware information fusion design

Abstract: Context understanding is established from the content, analysis, and guidance from query-based coordination between users and machines. In this manuscript, a live-video computing (LVC) approach is presented for access, comprehension and management of information for context assessment. Context assessment includes multimedia fusion of query-based text, images, and exploited tracks which can be utilized for image retrieval. In this paper, we explore the developments in database systems to enable context to be utilized in user-based queries for video tracking content extraction. Using a common image processing data set, we demonstrate activity analysis with context, privacy, and semantic-aware in a Dynamic Data-Driven Application System (DDDAS).

Abstract: A new dynamic data-driven application system (DDDAS) is proposed in this article to dynamically estimate a concentration plume and to plan optimal paths for unmanned aerial vehicles (UAVs) equipped with environmental sensors. The proposed DDDAS dynamically incorporates measured data from UAVs into an environmental simulation while simultaneously steering measurement processes. The main idea is to employ a few time-evolving proper orthogonal decomposition (POD) modes to simulate a coupled linear system, and to simultaneously measure plume concentration and plume source distribution via a reduced Kalman filter. In order to maximize the information gain, UAVs are dynamically driven to hot spots chosen based on the POD modes using a greedy algorithm. We demonstrate the efficacy of the data assimilation and control strategies in a numerical simulation and a field test.

Abstract: Distributed generation resources (DGs) and their utilization in large-scale power systems are attracting more and more utilities as they are becoming more qualitatively reliable and economically viable. However, uncertainties in power generation from DGs and fluctuations in load demand must be considered when determining the optimal operation plan for a microgrid. In this context, a novel dynamic data driven approach is proposed for determining the real-time operation plan of an electric microgrid while considering its conflicting objectives. In particular, the proposed approach is equipped with three modules: 1) a database including the real-time microgrid topology data (i.e., power demand, market price for electricity, etc.) and the data for environmental factors (i.e., solar radiation, wind speed, temperature, etc.); 2) a simulation, in which operation of the microgrid is simulated with embedded rule-based scale identification procedures; 3) a multi-objective optimization module which finds the near-optimal operation plan in terms of minimum operating cost and minimum emission using a particle-filtering based algorithm. The complexity of the optimization depends on the scale of the problem identified from the simulation module. The results obtained from the optimization module are sent back to the microgrid system to enhance its operation. The experiments conducted in this study have demonstrated the power of the proposed approach in real-time assessment and control of operation in microgrids.