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This article proposes a 4D segmentation method by considering the 3D t data as a 4D hyper object, using a D4Q81 lattice in a lattice Bhatnagar-Gross-Krook (LBGK) simulation, where time is considered a fourth dimension for defining directions of particle momentum in the LBGK model. They implemented 4D-LBGK on 20 4D hypersphere and hypercube images with varying amounts of Gaussian noise added (0–300...
It is well known that sport skill learning is facilitated by video observation of players' actions in the target sport. A viewpoint change function is desirable when a learner observes the actions using video images. However, in general, viewpoint changes for observation are not possible because most videos are filmed from a fixed point using a single video camera. The objective of this research is...
In this paper, we propose to compare different methods for tumor segmentation in positron emission tomography (PET) images. We first propose to tackle this problem under the umbrella of shape optimization and 3D deformable models. Indeed, 2D active contours have been widely investigated in the literature but these techniques do not take advantage of 3D informations. On the one hand, we use the well-known...
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