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Ica Filter Bank

by For Segmentation Of, Robert Jenssen, Torbjørn Eltoft - ICA 2003, 4-th Int. Symposium on Independent Component Analysis and Blind Signal Separation, April 1-4, 2003 , 2003
"... 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 ..."
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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

Eltoft: ICA filter bank for segmentation of textured images

by Robert Jenssen, Torbjørn Eltoft - ICA 2003, 4-th Int. Symposium on Independent Component Analysis and Blind Signal Separation, April 1-4, 2003 , 2003
"... 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 ..."
Abstract - Cited by 5 (1 self) - Add to MetaCart
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

Clasification of Images : Ica Filters vs Human Perception

by H. Le Borgne, N. Guyader, A. Guérin-dugué, J. Hérault - Proc. of IEEE Int. Symp. on Signal Proc. and Its App , 2003
"... In this paper we compare a machine based semantic organisation of natural images with the one provided by human perception. On one hand, we have conducted a psychophysical experiment to determine a human perception space in which we have identified semantic categories. These categories and the dista ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
and the distances between images are emphasised by analysing the human response similarities with a multidimensional scaling technique called Curvilinear Component Analysis (CCA). On the other hand, we try to perform the same scene categorisation with a computational model based on an ICA filter description. 1.

The "Independent Components" of Natural Scenes are Edge Filters

by Anthony J. Bell, Terrence J. Sejnowski , 1997
"... It has previously been suggested that neurons with line and edge selectivities found in primary visual cortex of cats and monkeys form a sparse, distributed representation of natural scenes, and it has been reasoned that such responses should emerge from an unsupervised learning algorithm that attem ..."
Abstract - Cited by 617 (29 self) - Add to MetaCart
. Some of these filters are Gabor-like and resemble those produced by the sparseness-maximization network. In addition, the outputs of these filters are as independent as possible, since this infomax network performs Independent Components Analysis or ICA, for sparse (super-gaussian) component

K-means Recovers ICA Filters when Independent Components are Sparse

by Alon Vinnikov, Shai Shalev-shwartz
"... Unsupervised feature learning is the task of using unlabeled examples for building a representation of objects as vectors. This task has been extensively studied in recent years, mainly in the context of unsupervised pre-training of neural networks. Recently, Coates et al. (2011) conducted extensive ..."
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clustering algorithms can be used to recover the ICA mixing matrix or its inverse, the ICA filters. It is well known that the independent components found by ICA form useful features for classification (Le et al., 2012; 2011; 2010), hence the connection between K-mean and ICA explains the empirical success

EEGLAB: an open source toolbox for analysis of single-trial EEG dynamics including independent component analysis

by Arnaud Delorme, Scott Makeig - J. Neurosci. Methods
"... Abstract: We have developed a toolbox and graphic user interface, EEGLAB, running under the cross-platform MATLAB environment (The Mathworks, Inc.) for processing collections of single-trial and/or averaged EEG data of any number of channels. Available functions include EEG data, channel and event i ..."
Abstract - Cited by 886 (45 self) - Add to MetaCart
information importing, data visualization (scrolling, scalp map and dipole model plotting, plus multi-trial ERP-image plots), preprocessing (including artifact rejection, filtering, epoch selection, and averaging), Independent Component Analysis (ICA) and time/frequency decompositions including channel

LEARNING SPARSE FILTER BANK TRANSFORMSWITH CONVOLUTIONAL ICA

by Eero P. Simoncelli
"... Independent Component Analysis (ICA) is a generalization of Principal Component Analysis that optimizes a linear transformation to whiten and sparsify a family of source signals. The computational costs of ICA grow rapidly with dimensionality, and application to high-dimensional data is generally ac ..."
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achieved by restricting to small windows, violating the translation-invariant nature of many real-world signals, and producing blocking artifacts in applications. Here, we reformulate the ICA problem for transformations computed through convolution with a bank of filters, and develop a generalization

Maximum Likelihood Blind Source Separation: A Context-Sensitive Generalization of ICA

by Barak A. Pearlmutter, Lucas C. Parra - Advances in Neural Information Processing Systems 9 , 1997
"... In the square linear blind source separation problem, one must find a linear unmixing operator which can detangle the result x i (t) of mixing n unknown independent sources s i (t) through an unknown n \Theta n mixing matrix A(t) of causal linear filters: x i = P j a ij s j . We cast the problem ..."
Abstract - Cited by 90 (2 self) - Add to MetaCart
In the square linear blind source separation problem, one must find a linear unmixing operator which can detangle the result x i (t) of mixing n unknown independent sources s i (t) through an unknown n \Theta n mixing matrix A(t) of causal linear filters: x i = P j a ij s j . We cast

EEG CLASSIFICATION BY ICA SOURCE SELECTION OF LAPLACIAN-FILTERED DATA

by Claudio G. Carvalhaes, Marcos Perreau-guimaraes, Logan Grosenick
"... We studied the performance of a double-spatial filtering method for classification of single-trial electroencephalog-raphy (EEG) data that couples the spherical surface Lapla-cian (SL) and independent component analysis (ICA). This method was evaluated in the context of a binary classifica-tion expe ..."
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We studied the performance of a double-spatial filtering method for classification of single-trial electroencephalog-raphy (EEG) data that couples the spherical surface Lapla-cian (SL) and independent component analysis (ICA). This method was evaluated in the context of a binary classifica-tion

Verification of Palm Print Using Log Gabor Filter and Comparison with ICA

by Rajesh Malviya, Roopesh Kumar, Anil Dangi, Pankaj Kumawat
"... Abstract — Palm print recognition is one of the most widely researching areas in security and criminal detection. All the things hold by hands so that more importance is given to the palm print recognition because palm has so many variations for person to person comparatively finger. This paper pres ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
presented Gabor convolve method and its comparison with ICA based techniques for Palm print recognition. We have taken four palms of a person from Singapore polytechnic database, two palms for training and two palms for testing. Palm cropping is old technique so we are not using palm crop technique
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