Now showing items 195-214 of 508

• #### Information processing of linear block decoders ﻿

(2002-10-20)
This paper develops a systematic method of studying the benefits of soft decoding for linear block codes by applying the concepts of information processing. We show that soft decoding uniformly improves decoder performance ...
• #### Instantaneous Frequency Estimation using the Reassignment method ﻿

(1998-01-15)
This paper explores the method of reassignment for extracting instantaneous frequency attributes from seismic data. The reassignment method was first applied to the spectrogram by Kodera, Gendrin and de Villedary and later ...
• #### Integral Transforms Covariant to Unitary Operators and their Implications for Joint Signal Representations ﻿

(1996-06-01)
Fundamental to the theory of joint signal representations is the idea of associating a variable, such as time or frequency, with an operator, a concept borrowed from quantum mechanics. Each variable can be associated ...
• #### INTERFACIAL TENSION MEASUREMENT BY SESSILE DROP USING DIGITAL IMAGE PROCESSING ﻿

(1987)
In enhanced oil recovery the displacement of oil is most effective at low interfacial tensions, usuall below 10$\sp{-2}$ dyne/cm. This condition can be achieved by surfactant or chemical flooding but requires accurate ...
• #### Interpolation and Denoising of Nonuniformly Sampled Data using Wavelet-domain Processing ﻿

(1999-03-01)
In this paper, we link concepts from nonuniform sampling, smoothness function spaces, interpolation, and denoising to derive a suite of multiscale, maximum-smoothness interpolation algorithms. We formulate the interpolation ...
• #### An introduction to multifractals ﻿

(1997-01-15)
This is an easy read introduction to multifractals. We start with a thorough study of the Binomial measure from a multifractal point of view, introducing the main multifractal tools. We then continue by showing how to ...
• #### Inverse Measures, the Inversion formula, and Discontinuous Multifractals ﻿

(1997-01-20)
The present paper is part I of a series of three closely related papers in which the inverse measure m' of a given measure m on [0,1] is introduced. In the first case discussed in detail, both these measures are multifractal ...
• #### Inversion Formula for Continuous Multifractals ﻿

(1997-01-20)
In a previous paper the authors introduced the inverse measure <i>Âµ</i><sup>â  </sup> of a probability measure <i>Âµ</i> on [0,1]. It was argued that the respective multifractal spectra are linked by the 'inversion formula' ...
• #### Joint Compression and Speckle Reduction of SAR Images using Embedded Zerotree Models ﻿

(1996-03-01)
We propose a new method for speckle reduction in synthetic aperture radar (SAR) imagery based on the embedded zerotree image compression algorithm. This new approach to denoising is inspired by the realization that the ...
• #### Joint Detection Strategies for Orthogonal Frequency Division Multiplexing ﻿

(2000-04-20)
Traditional OFDM implementations use conventional Fourier filters for data modulation, via the IFFT operation. Much research suggests wavelet based OFDM provides performance gains, due to superior spectral containment ...
• #### Joint Distributions for Arbitrary Variables ﻿

(1994-10-01)
We compare the methods of Cohen (1971) and of Baraniuk and Jones (see Proc. IEEE ICASSP-93, p.320-323, 1993) for obtaining joint distributions for arbitrary variables. We show that the two methods produce identical results ...
• #### Joint Distributions of Arbitrary Variables Made Easy ﻿

(1998-10-01)
In this paper, we propose a simple framework for studying certain distributions of variables beyond time-frequency and time-scale. When applicable, our results turn the theory of joint distributions of arbitrary variables ...
• #### Joint Distributions of Arbitrary Variables Made Easy ﻿

(1996-09-01)
The successful application of joint time-frequency distributions to problems in time-varying spectral analysis has stimulated considerable interest in distributions of other variables for use when a strict time-frequency ...
• #### Joint Distributions of Arbitrary Variables Made Easy ﻿

(1998-09-01)
The successful application of joint time-frequency distributions to problems in time-varying spectral analysis has stimulated considerable interest in distributions of other variables for use when a strict time-frequency ...
• #### Joint signaling techniques and spectral optimization for symmetric bit-rate communication over self-NEXT-dominated channels ﻿

(2004-07-01)
We present a framework for maximizing the capacity of symmetric bit-rate communication services dominated by Gaussian crosstalk, in particular, digital subscriber line (DSL) services. We solve for optimal transmit power ...
• #### Joint Signaling Techniques for Crosstalk-Dominated Communication Channels ﻿

(1999-12-01)
We present a framework for maximizing the capacity (or bit rate) of symmetric bit rate communication services dominated by crosstalk, in particular digital subscriber line (DSL) services. We assume the DSL channel is a ...
• #### JPEG Compression History Estimation for Color Images ﻿

(2006-06-01)
We routinely encounter digital color images that were previously compressed using the Joint Photographic Experts Group (JPEG) standard. En route to the image's current representation, the previous JPEG compression's various ...
• #### JPEG Compression History Estimation for Color Images ﻿

(2006)
We routinely encounter digital color images that were previously JPEG-compressed. En route to the image's current representation, the previous JPEG compression's various settings&mdash;termed its JPEG compression history ...
• #### JPEG Compression History Estimation for Color Images ﻿

(2003-09-01)
We routinely encounter digital color images that were previously JPEG-compressed. We aim to retrieve the various settings - termed JPEG compression history (CH) - employed during previous JPEG operations. This information ...
• #### Lattice Algorithms for Compression Color Space Estimation in JPEG Images ﻿

(2001-08-01)
JPEG (Joint Photographic Experts Group) is an international standard to compress and store digital color images [5]. Given a color image that was previously JPEG-compressed in some hidden color space, we aim to estimate ...