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A novel region based Active Contour Model (ACM) for image segmentation is presented using image local information for intensity inhomogeneity images. A transcendental (trigonometric) energy functional based on Local Fitted Image (LFI) energy is suggested to extract the image local information. The difference between the original and fitting image is introduced as an angular constraint of the trigonometric...
In this paper, it is based on the theory of aerodynamics and one 1∶1 heavy-duty commercial vehicle geometry was built. The numerical simulation of the vehicle was completed by modifying the geometric model, simplifying the mesh and solving the control equations, Using computational fluid dynamics(CFD) commercial software—Ansys Fluent to complete the simulation. The theory of aerodynamic drag was obtained...
The multiple Unmanned Combat Aerial Vehicles (UAVs) tasks allocation, studied in the paper, is a complex assignment problem which requires allocating UAVs to targets to complete various tasks. The challenges is not only the potential dimensional explosion when the scenarios become more complicated and the size of problems increases, but also the constraints handling which is a specific characteristic...
Modeling active steganalysis as a BSS problem we propose two active steganalysis schemes which only use one copy of stego image in this letter. We firstly adopt wavelet hidden Markov tree model to obtain an estimate of cover image and then use ICA algorithm to solve this BSS problem. The schemes overcome the unreasonable presupposition of Chandramouli's method which needs two copies of stego images...
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