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This paper describes an improved speaker diarization system for multiple distance microphone (MDM) meeting conversations. First, the new system includes a modified speech activity detector (SAD). Second, it adopts the new spectral features based on equivalent rectangular bandwidth (ERB) or bark scale, which are compared with the traditional Mel Frequency Cepstral Coefficients (MFCC) features. Third,...
Recent applications of model-based iterative reconstruction (MBIR) algorithms to multislice helical CT reconstructions have shown that MBIR can greatly improve image quality by increasing resolution as well as reducing noise and some artifacts. However, high computational cost and long reconstruction times remain as a barrier to the use of MBIR in practical applications. Among the various iterative...
Iterative reconstruction shows potential for noise reduction and resolution improvements in X-ray CT. The forward projection operator is a key modeling choice in every iterative reconstruction method. The operator may be expressed in terms of the basis functions corresponding to a continuous representation of the image space. In this paper, we study three system models describing the mapping from...
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