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A novel statistical framework for modeling the intrinsic structure of crowded scenes and detecting abnormal activities is presented in this paper. The proposed framework essentially turns the anomaly detection process into two parts, namely, motion pattern representation and crowded context modeling. During the first stage, we averagely divide the spatiotemporal volume into atomic blocks. Considering...
The performance of orthogonal frequency division multiplexing interleave division multiple access (OFDM-IDMA) systems would be severely degraded by the inter-carrier interference (ICI) which is caused by multiple carrier frequency offsets (CFOs). Existing receivers with CFO mitigation capabilities either have extremely high complexities or suffer from performance loss compared with the conventional...
Rewiring is a flexible and useful logic transformation technique through which a target wire can be removed by adding its alternative logics without changing the circuit functionality. In today's deep sub-micron era, circuit wires have become a dominating factor in most EDA processes and there are situations where removing a certain set of (perhaps extremely unwanted) wires is very useful. However,...
We address the problem in the conventional Gaussian mixture model (GMM)-based spectral conversion from the viewpoint of optimal conversion function selection. The proposed method is motivated by that if the optimal conversion function based on minimum mel-cepstral distortion (MMCD) criterion can be selected during the conversion stage, the conversion performance in terms of mel-cepstral distortion...
In this paper, a similar but novel method presented in [3, 4], lifting wavelet-like transform (LWLT), is applied to the FMM method to sparsify the aggregation and disaggregation matrix. By compressing the elements in those two matrices in time, the method proposed can further speed up the MVM and save much memory when the FMM is used. Numerical results for different shaped three-dimensional objects...
Most of the vector overlay operations are designed in the vector-topological model, which require the individual layers structured with full topology. It takes rather a long time to build the topology to each of the input data sets, and the output of the process is a new topological structured layer whose topology information seldom needed. In order to avoid the time-consuming topology building process...
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