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3D point clouds, a new primitive representation for objects, are spreading among thousands of people through internet software. Thus, the privacy preserving problem of the 3D point cloud should be widely concerned by more and more people. To ensure the safe transmission and use of point cloud, two schemes of encryption have been proposed by using chaotic cat mapping in this paper. The two encryption...
For the characters of EEG signal due to motor imagery, six motor imagery tasks are planned and the methods of common spatial pattern (CSP) feature extraction and probabilistic neural network (PNN) classification of EEG signal are studied. And an online control system for upper limb prosthesis based on motor imagery EEG is realized, which consists of the brain computer interface (BCI) unit, the motion...
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