2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)

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Synchronous and asynchronous distributed DSP education
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1247-1251 vol.2
M.H. Hayes, J.R. Jackson
The Georgia Tech Regional Engineering Program (GTREP) was originally created to provide the opportunity for students in southeastern Georgia to earn a Georgia Tech undergraduate engineering degree without leaving the region. Students complete two years of general education and engineering prerequisites at their home institutions before beginning the Georgia Tech curriculum as juniors. Georgia Tech...... hiện toàn bộ
#Digital signal processing #Educational programs #Computer science education #Production #Libraries #Signal processing #Image processing #Educational technology #Testing #Computer aided instruction
Towards non-parametric gridding of microarray images
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 623-626 vol.2
R. Fabbri, L.F. da Costa, J. Barrera
cDNA microarrays, or biochips, are a technology used to measure gene expression on a large-scale basis. One of the critical issues of microarray experiments is the analysis of the produced images, which are the raw data from which measurements need to be made. However, the first stage, i.e. spot gridding, is not performed fully automatically in most microarray image analysis software. A novel, non...... hiện toàn bộ
#Image segmentation #DNA #Gene expression #Image analysis #Image sequence analysis #Sequences #Fluorescence #Large-scale systems #Software performance #Shape
A causal optimal filter of the second order
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1223-1226 vol.2
A. Torokhti, P. Howlett, C. Pearce
We provide a non-linear optimal physically realizable filter which guarantees a smaller associated error than those of the known linear optimal filters proposed by H.W. Bode and C.E. Shannon (see Proc. IRE, vol.38, p.417-25, 1950) and M.V. Ruzhansky and V.N. Fomin (see Bulletin of St. Petersburg University, Mathematics, vol.28, p.50-5, 1995). The technique presented has potential applications to n...... hiện toàn bộ
#Nonlinear filters #Electronic mail #Mathematics #Signal processing #Blind equalizers #Pattern recognition #Stochastic processes #Extraterrestrial measurements #Equations #Digital signal processing
Multiresolution autoregressive filtering for pneumonia detection in medical images
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1157-1159 vol.2
I.M. Stephanakis, G.K. Anastassopoulos, A.D. Tsalkidis
Digital signal processing provides a variety of algorithmic tools, which are useful in modern medical imaging applications. A novel processing method based upon multiresolution autoregressive filters is proposed for automated detection of child pneumonia in X-ray images. Wavelet functions are utilized in order to construct a multiresolution whitening filter which retains information of the texture...... hiện toàn bộ
#Image resolution #Filtering #Lungs #Biomedical imaging #Signal resolution #Filters #Digital signal processing #Signal processing algorithms #X-ray detection #X-ray detectors
Detection and estimation of motion using adaptive grids
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 675-678 vol.2
J.V. Condell, B.W. Scotney, P.J. Morrow
A Galerkin finite element approach is described for computing optical flow which uses an adaptive triangular mesh in which the resolution increases where motion is found to occur. The mesh facilitates a reduction in computational effort by enabling processing to focus on particular objects of interest in a scene, specifically those areas where motion is detected. The method is applied to real imag...... hiện toàn bộ
#Motion detection #Motion estimation #Finite element methods #Image motion analysis #Optical computing #Image analysis #Layout #Image sampling #Optical arrays #Biomedical optical imaging
Shape description by image foresting transform
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1089-1092 vol.2
R.S. Torres, A.X. Falcao, L.F. Costa
The image foresting transform (IFT) is a unified and effective graph-based approach to the design of image-processing operations, often with considerable efficiency gains over published algorithms. This paper extends the applications of the Euclidean IFT to two recently proposed shape descriptors: saliences and multiscale fractal dimension. It explains how to obtain the salience information and th...... hiện toàn bộ
#Shape #Fractals #Pixel #Skeleton #Robustness #Cost function #Physics computing #Process design #Algorithm design and analysis #Filtering
Algorithms for the nonuniform acquisition and subsequent reconstruction of data
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 791-794 vol.2
G.B. Irvine, D.R.S. Cumming
Algorithms are presented for the purposes of nonuniform sampling and reconstruction of data. The sampling procedure is based on the Adams-Bashforth-Moulton multistep predictor-corrector method for the solution of ordinary differential equations, with Newton backward differencing interpolation formulae facilitating sample rate changes. It is necessary to store 2n + 1 equispaced past values of t and...... hiện toàn bộ
#Sampling methods #Polynomials #Nonuniform sampling #Differential equations #Interpolation #Reconstruction algorithms #Lagrangian functions #Microsensors #Timing #Time measurement
A blind adaptation algorithm for decision feedback equalizers with fractionally-spaced feedforward filters
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 779-782 vol.2
R. Zukunft, S. Haar, T. Magesacher
This paper introduces a blind adaptation algorithm for decision feedback equalizers (DFE) which employ an oversampled feedforward filter. The coefficient set of the feedback filter is obtained from a pure recursive filter which is designed to whiten the oversampled input signal in the sense that it minimizes correlations between the original signal and versions of it which are shifted by multiples...... hiện toàn bộ
#Decision feedback equalizers #Nonlinear filters #DSL #IIR filters #Blind equalizers #Convergence #Adaptive filters #Feedback circuits #Signal design #Data communication
Feature extraction with wavelet transform for recognition of isolated handwritten Farsi/Arabic characters and numerals
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 923-926 vol.2
A. Mowlaei, K. Faez, A.T. Haghighat
A system is developed for recognition of handwritten Farsi/Arabic characters and numerals. The discrete wavelet transform is utilized to produce wavelet coefficients, which are used for classification. We used Haar wavelet for feature extraction in this system. The extracted features are used as training inputs to a feed forward neural network using the backpropagation learning rule. The learning ...... hiện toàn bộ
#Feature extraction #Wavelet transforms #Character recognition #Handwriting recognition #Discrete wavelet transforms #Natural languages #Wavelet coefficients #Feeds #Neural networks #Feedforward neural networks
Teager energy based blood cell segmentation
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 619-622 vol.2
B.R. Kumar, D.K. Joseph, T.V. Sreenivas
A new method for fast and simple segmentation of peripheral blood smears using the Teager energy operator (TEO) is presented. The two-part algorithm efficiently segments leucocytes present in the smear into nucleus and cytoplasm. The local mean weighted high pass filtering property of the Teager energy operator is used to identify and distinguish the nucleus of white blood cells. Cytoplasm present...... hiện toàn bộ
#Cells (biology) #Image segmentation #White blood cells #Filtering #Morphology #Digital signal processing #Image edge detection #Filters #Power engineering and energy #Histograms
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