Previous approaches to texture analysis and segmentation use multichannel filtering by applying a set of filters in the frequency domain or a set of masks in the spatial domain. This paper presents two new texture segmentation algorithms based on multichannel filtering in conjunction with neural networks for feature extraction and segmentation. The features extracted by Gabor filters have been ...

We present a novel class of multirate filter banks that are based on a special class of time-varying filters. The filter operations are done by modifying the usual convolution operations with a twist. We will show that the filter banks allow perfect reconstruction, in spite of the fact that the filters are time-varying and the arithmetic is over finite fields. We prove that the one-dimensional ...

This paper is to construct tight wavelet frame systems containing a set of canonical filters by applying the unitary extension principle of [20]. A set of filters are canonical if the filters in this set are generated by flipping, adding a conjugation with a proper sign adjusting from one filter. The simplest way to construct wavelets of s-variables is to use the 2−1 canonical filters generated...

OnApril 1, 2002, the Japanese government lifted a blanket guarantee of all deposits and began limiting the coverage of time deposits. This paper uses this deposit insurance reform as a natural experiment to investigate the relationship between deposit insurance coverage and market discipline. I find that the reform raised the sensitivity of interest rates on deposits, and that of deposit quanti...

This paper examines the effects of the estimated probability of bank failure on the growth rates oflarge time deposits and interest rates on those deposits. While riskier banks paid higher interest rates, they attracted less large time deposits in the second half of the 1980s. These results indicate that risky banks faced unfavorable supply schedules of large time deposits and, hence, support t...

| We study frames for robust transmission over the Internet. In our previous work, we used quantized nite-dimensional frames to achieve resilience to packet losses; here, we allow the input to be a sequence in`2 (Z) and focus on a lter-bank implementation of the system. We present results in parallel, R N or C N versus`2 (Z), and show that uniform tight frames, as well as newly introduced stron...

Speaker Recognition is the task of identifying an individual from their voice. Typically this task is performed in two consecutive stages: feature extraction and classification. Using a Gaussian Mixture Model (GMM) classifier different filter-bank configurations were compared as feature extraction techniques for speaker recognition. The filter-banks were also compared to the popular Mel-Frequen...

A new combinational window family for the design of prototype FIR filter of two-channel Quadrature Mirror Filter (QMF) bank is introduced. One variable window, viz., Kaiser Window is also used to design prototype filters. The design equations of variable window function based filter banks is also given in this article. Reconstruction error, which is used as an objective function, is minimized b...

This brief presents a reconfigurable fast filter bank (RFFB) with less gate counts for wireless communication applications such as spectrum sensing and channelization. This is designed with an improved modified frequency transformation-based variable digital filter (MFTVDF) at the first stage of the multistage implementation. The low-pass MFT-VDF offers unabridged control over the cutoff freque...

This paper deals with structural properties of a class of asymptotic filters from the filter banks design point of view. It is shown that both, the continuousand discrete-time lattice filter structures can be derived as a natural consequence of strict causality, minimality and asymptotic stability requirements. An abstract form of classic Tellegen’s relation is introduced and used as a basic de...