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This paper investigates the coverage optimization of a visual sensor network for monitoring three-dimensional (3-D) environment or objects. Different from existing works, we improve the system performance from two aspects: (1) a parallel visual occlusion detection algorithm is implemented with Graphic Processing Units (GPUs) in order to increase the computing efficiency and a further improved parallel...
Based on a convex optimization approach, we propose a new method of multi-camera deployment for visual coverage of a 3-D object surface. In particular, the optimal placement of a single camera is first formulated as translation and rotation convex optimization problems, respectively, over a set of covered triangle pieces on the target object. The convex optimization is recursively applied to expand...
The deployment of multi-camera networks is usually accomplished by maximizing the covered area, while the coverage strength is difficult to be optimized simultaneously. We propose a coverage enhancement approach in this paper to improve the coverage strength of three-dimensional (3D) scenes, by using convex optimization approach to refine the initial deployment. The 3D scene is represented by a triangle...
An automatic method for solving the problem of view planning in high-resolution industrial inspection is presented. The method's goal is to maximize the visual coverage, and to minimize the number of cameras used for inspection. Using a CAD model of the object of interest, we define the scene-points and the viewpoints, with the later being the solution space. The problem formulation accurately encapsulates...
The dynamic model of a 3D overhead crane system is established by utilizing Lagrangepsilas equation. In the model, not only the motion of the trolley in horizontal plane, but also the variation of the rope length is considered, to provide a precise description for the dynamic performance of the system states. Furthermore, the main nonlinear disturbances existing in the environment, such as the dynamic...
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