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With the development of power systems and the extensive application of nonlinear elements in the electricity system, the problem of ferroresonance do harm to the network and electricity facilities has become more prominent. Wavelet analysis has good time-frequency localization characteristic, so it is suitable for fault analysis of power system. This paper is base on in the neutral point unearthed...
In this paper, Electrocardiographic (ECG) signal preprocessing is studied. The ECG signals from body surface are often contaminated by various kinds of noises such as power-line interference, baseline wander, electromyographic (EMG) noise, electrode motion artifacts and so on. These noises bring obstacle to the diagnosis of cardiovascular diseases. In order to eliminate the above noises in ECG signal,...
In recent years, wavelet-based scalable video coding has made a considerable progress, but there are still several problems in the development of WSVC. Such as quantization error accumulation resulted from the open-loop structure of MCTF in coding and the poor error resilient performance of the bit stream. The major goal of this paper is to propose a new framework of scalable video coding based on...
The quality of side information influences the overall performance of the Distributed Video Coding (DVC). In this context, this paper proposes a practical scheme of using HVSBM to generate side information for wavelet-based DVC. The decoder uses the hierarchical variable size block matching (HVSBM) motion estimation to do the search process and predict side information, which is used to reconstruct...
In this paper we propose a novel method that is motivated by distributed source coding to correct the errors of significant sections in 3D wavelet video streaming. Extra information is generated by Wyner-Ziv codec and is sent to the decoder. While errors occur, the relevant parts in the same frames from EZBC decoder are used as side information to decode the Wyner-Ziv bits to produce a refined replacement...
In this paper, we propose a new wavelet video coding based on MCTF-WZ through introducing Wyner-Ziv coding, which is a new coding structure. Low and high frequency frames in temporal domain are encoded through the distinct coding manner, where the former is encoded by the BISK algorithm after spatial analysis. But the latter is encoded by two distinct ways according to the correlation between the...
Distributed video coding (DVC) is a new compression method based on two key information theory results: Slepian-Wolf and Wyner-Ziv theorems. In this paper, we proposed a Wyner-Ziv video coding scheme based on wavelet transform and set-partition in hierarchical trees (SPIHT) which can exploit the spatial, temporal and statistical correlations of the frame sequence. In our scheme, we use Discrete Wavelet...
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