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Building extraction from remote sensing images is a longstanding topic in land use analysis and applications of remote sensing. Variations in shape and appearance of buildings, occlusions and other unpredictable factors increase the hardness of automatic building extraction. Numerous methods have been proposed during the last several decays, but most of these works are task oriented and lack of generalization...
Data provenance is useful for data analysis, including auditing, debugging, evaluating the trust and quality, access control and so on. For the scale of data keep increasing, data provenance also become large and constantly growing, and it brings challenges to the efficiency of provenance tracking which is the important base of data analysis. This paper proposes a kind of dependency view based on...
This paper considers the optimal tracking control (OTC) problem for bilinear systems affected by sinusoidal disturbances, and gives a successive approximation approach to solve analogous problems for general bilinear systems. For a given bilinear OTC problem, a sequence of linear problems is constructed, and their solutions are shown to converge to the desired solution. By iteratively solving the...
Delicate surgical planning and accurate guidance plays an important role in successful image guided intervention. In interventional lung cancer diagnosis and treatments, precise segmentation of pulmonary vessels from lung CT images provides vital visualization for pre-op planning and inra-op guidance to avoid major vessel damage. While simple thresholding and window/level setting can briefly segment...
Considering the persistent disturbances and the restraint of control variables in multivariable time-varying systems, an approximate singular optimal control method is presented, which makes use of a non-singular control problem instead of singular one. Firstly, this method presents the sufficient and necessary condition for the existent of non-singular optimal control law. Then the approximate optimal...
Augmented reality assembly, is a promising application of virtual reality in design and manufacturing and has drawn much more and more attentions from industries and research institutes. The focus of this study are as follows. (1) using the agent-oriented modeling for subassembly object and the behavior reasoning based on petri net model of environment, to build the system model of augmented reality...
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