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Results 1 - 10
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363
The curvelet transform for image denoising
- IEEE TRANS. IMAGE PROCESS
, 2002
"... We describe approximate digital implementations of two new mathematical transforms, namely, the ridgelet transform [2] and the curvelet transform [6], [5]. Our implementations offer exact reconstruction, stability against perturbations, ease of implementation, and low computational complexity. A cen ..."
Abstract
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Cited by 404 (40 self)
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central tool is Fourier-domain computation of an approximate digital Radon transform. We introduce a very simple interpolation in Fourier space which takes Cartesian samples and yields samples on a rectopolar grid, which is a pseudo-polar sampling set based on a concentric squares geometry. Despite
Decimating Samples for Mesh Simplification
- Proc. 13th Canadian Conf. Comput. Geom
, 2001
"... Modern scanning devices allow to obtain a dense sample of discrete points from the surface of a physical object. A piecewise linear surface interpolating these points is computed to reconstruct the sampled surface. Typically such surfaces have a large combinatorial description since the input is usu ..."
Abstract
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Cited by 15 (2 self)
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is usually too dense. In this paper we present an algorithm to decimate the samples to eliminate oversampling. The algorithm decimates the sample with the guarantee that the remaining points are sufficient to reconstruct the surface and has a density controlled by an user input.
On the Processing of Decimated Signals
, 2008
"... Abstract. The aim of the given paper is development of a recursive approach for calculating the statistics of decimated realizations of a basic discrete-time signal, obtained by sampling a continuous-time one. The statistics values are calculated without storing decimated realizations in the memory ..."
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Abstract. The aim of the given paper is development of a recursive approach for calculating the statistics of decimated realizations of a basic discrete-time signal, obtained by sampling a continuous-time one. The statistics values are calculated without storing decimated realizations in the memory
Reconfigurable Decimation Filter
"... Decimation filter is used to reduce the sampling rate for succeeding stages of an oversampling ADC. The speed of a successive-approximation ADC predominately depends on the decimator speed. This necessitates a need to design a high speed decimation filter to improve the overall system performance. A ..."
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Decimation filter is used to reduce the sampling rate for succeeding stages of an oversampling ADC. The speed of a successive-approximation ADC predominately depends on the decimator speed. This necessitates a need to design a high speed decimation filter to improve the overall system performance
Decimals and liquidity: A study of the NYSE
- Journal of Financial Research
, 2004
"... Using a carefully constructed matched sample of control (nondecimal) stocks, we isolate the effects of decimalization for a sample of NYSE-listed common stocks trading in decimals. We find that the quoted depth as well as the quoted and effective bid-ask spreads declined significantly following deci ..."
Abstract
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Cited by 24 (1 self)
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Using a carefully constructed matched sample of control (nondecimal) stocks, we isolate the effects of decimalization for a sample of NYSE-listed common stocks trading in decimals. We find that the quoted depth as well as the quoted and effective bid-ask spreads declined significantly following
Adaptive decimation algorithm for image compression
"... Abstract:- This paper proposes a new lossy image compression method based on two-mixed transformation techniques. The first one employs an adaptive decimation algorithm to adjust the sampling rate to minimum local variance of the reconstructed image. To extract pixels on original image, the adaptive ..."
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Abstract:- This paper proposes a new lossy image compression method based on two-mixed transformation techniques. The first one employs an adaptive decimation algorithm to adjust the sampling rate to minimum local variance of the reconstructed image. To extract pixels on original image
A filter bank for the directional decomposition of images: Theory and design
- IEEE TRANS. SIGNAL PROCESS
, 1992
"... This paper introduces a directionally oriented 2-D filter bank with the property that the individual channels may be critically sampled without loss of information. The passband regions of the component filters are wedge shaped and thus provide directional information. It is shown that these filter ..."
Abstract
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Cited by 174 (3 self)
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that these filter bank outputs may be maximally decimated to achieve a minimum sample representation in a way that permits the original signal to be exactly reconstructed. The paper discusses the theory for directional decomposition and the issues associated with maxi-mum decimation and reconstruction. In addition
Time-Varying Recursive Filters For Decimation
- Proc. 10th Euro. Sig. Processing Conf
, 2000
"... Decimation and interpolation require filtering. In order to reduce the hardware effort, FIR filters with linear phase are implemented as polyphase filters often. Still, the number of coefficients cannot be reduced by this method. Comb filters implemented as cascaded-integrator-comb filters are hardw ..."
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Decimation and interpolation require filtering. In order to reduce the hardware effort, FIR filters with linear phase are implemented as polyphase filters often. Still, the number of coefficients cannot be reduced by this method. Comb filters implemented as cascaded-integrator-comb filters
IDENTIFIERS UDC; *Universal Decimal Classification
, 1974
"... The developaPnt of machine or computer applications for the arrangement, storage, retrieval, and display of literature references or classification schedules, vocabularies, and indexes used with the Universal Deciaal Classification (UDC) System as an access point iE reviewed. Activities of the Subco ..."
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and samples of their output are provided. A bibliography on mechanization and the UDC is included. (Author/DGC)
Selection of Sampling Grid and Prelter for Image Decimation Based on Spectral Extension Analysis
"... pedersinsartitubaroeletpolimiit Signal decimation aimed at optimal spectral packing has a variety of applications in areas ranging from array pro cessing to image processing In this article we propose and discuss a new method for determining decimation grid and prelter that best t the spectral exte ..."
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pedersinsartitubaroeletpolimiit Signal decimation aimed at optimal spectral packing has a variety of applications in areas ranging from array pro cessing to image processing In this article we propose and discuss a new method for determining decimation grid and prelter that best t the spectral
Results 1 - 10
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363
