A new approach for spatial direction-of-arrival (DOA) estimation, denoted as Re-Iterative SuperResolution (RISR), is developed based upon a recursive implementation of the minimum mean-square error (MMSE) framework. This recursive strategy alternates between updating an MMSE filter bank according to the previous receive spatial power distribution and then subsequently applying the new filter ba...

6 Quadrature Mirror Filter QMF Bank. 1 Errors Created in the QMF Bank. 2 A Simple Alias-Free QMF.Thus, the name quadrature mirror filter is a misnomer, when M 2. However, this has become more or less standard, and there is no reason to change the.In digital signal processing, a quadrature mirror filter is a filter whose magnitude response is the mirror image around pi2 of that of another filter...

A new method is developed to optimize the prototype filter response in passband, stopband and overall filter bank response. project management for construction chris hendrickson and tu... The design.the parameter values, the QMF bank enjoys perfect-reconstruction property while at the. Maximally decimated M-channel quadrature mirror filter. QMF bank.The well studied subject of Quadrature Mirror...

Image Quality Assessment (IQA) algorithms evaluate the perceptual quality of an image using evaluation scores that assess the similarity or difference between two images. We propose a new low level feature based IQA technique, which applies filter-bank decomposition and center-surround methodology. Differing from existing methods, our model incorporates color intensity adaptation and frequency ...

Recently a new real-valued oversampled filter bank has been proposed which reduces the “inband” alias. The filter bank consists of at least three channels which are subsampled by different subsampling ratios. In this paper we investigate into the applicability of this filter bank for adaptive subband filtering and compare the setup with existing subband and fullband techniques.

Scale and orientation steerable 2D filters are constructed using a frame of Erlang functions in the Fourier domain. Erlang forms for the radial frequency characteristic are shown to provide complex quadrature filters which can be steered in a scale parameter, . Oriented, spatial domain filters are constructed by imposing an appropriate angular selectivity in the frequency domain. A filter bank ...

We present a new method for classification of malignant and benign clusters of microcalcifications in digital mammograms. A computationally efficient infinite impulse response (IIR) quadrature mirror filter (QMF) bank is used as a tool for extracting texture and shape features. The filter bank splits the input image into four subbands: low-low band, low-high band, high-low band and highhigh ban...

Extended Abstract: Texture segmentation is an important but challenging task in image analysis or computer vision applications. Among various cues, texture plays a vital role towards object recognition. Recent studies reveal the two popular methods for texture analysis: filter bank methods and Gray level cooccurrence matrices (GLCM). In this work, we have proposed several texture features in th...

Independent component analysis (ICA) of textured images is presented as a computational technique for creating a new data dependent filter bank for use in texture segmentation. We show that the ICA filters are able to capture the inherent properties of textured images. The new filters are similar to Gabor filters, but seem to be richer in the sense that their frequency responses may be more com...