نتایج جستجو برای: distortion bounds and convolution

تعداد نتایج: 16843437  

2018
Klaus Jansen Lars Rohwedder

Integer programs with a fixed number of constraints can be solved in pseudo-polynomial time. We present a surprisingly simple algorithm and matching conditional lower bounds. Consider an IP in standard form max{cx : Ax = b, x ∈ Zn≥0}, where A ∈ Z , b ∈ Z and c ∈ Z. Let ∆ be an upper bound on the absolute values in A. We show that this IP can be solved in time O(m∆) · log(‖b‖∞). The previous bes...

Journal: :Informatica, Lith. Acad. Sci. 1998
Ravinder Krishna Raina TejSingh Nahar

Abstract. The object of the present paper is to study certain subclasses J∗ p (a, b, σ) and Cp(a, b, σ) of analytic p-valent functions, and obtain coefficient bounds and distortion properties for functions belonging to these subclasses. Further results include distortion inequalities and radii of close-toconvexity, starlikeness and convexity for these classes of functions.

Journal: :IEEE Signal Processing Letters 2021

A main challenge for tasks on panorama lies in the distortion of objects among images. In this work, we propose a Distortion-Aware Monocular Omnidirectional (DAMO) dense depth estimation network to address indoor panoramas with two steps. First, introduce distortion-aware module extract calibrated semantic features from omnidirectional Specifically, exploit deformable convolution adjust its sam...

Journal: :Numerische Mathematik 2011
Lehel Banjai Christian Lubich Jens Markus Melenk

An error analysis of Runge-Kutta convolution quadrature is presented for a class of nonsectorial operators whose Laplace transform satisfies, besides the standard assumptions of analyticity in a half-plane Re s > σ0 and a polynomial bound O(s 1) there, the stronger polynomial bound O(s2) in convex sectors of the form | arg s| ≤ π/2 − θ < π/2 for θ > 0. The order of convergence of the Runge-Kutt...

Journal: :Int. J. Math. Mathematical Sciences 2012
Jing-Yu Yang Shuhai Li

Making use of a linear operator, which is defined by the Hadamard product, we introduce and study a subclass Y a,c A,B; p, λ, α of the class A p . In this paper, we obtain the coefficient inequality, distortion theorem, radius of convexity and starlikeness, neighborhood property, modified convolution properties of this class. Furthermore, an application of fractional calculus operator is given....

Journal: :EURASIP J. Wireless Comm. and Networking 2008
Jun Zheng Bhaskar D. Rao

Transformed codebooks are obtained by a transformation of a given codebook to best match the statistical environment at hand. The procedure, though suboptimal, has recently been suggested for feedback of channel state information (CSI) in multiple antenna systems with correlated channels because of their simplicity and effectiveness. In this paper, we first consider the general distortion analy...

1998
Rajeev Agrawal Rajendran Rajan

In this paper, we discuss a simple conceptual framework for analyzing the ow of data in integrated services networks. The framework allows us to easily model and analyze the behavior of open loop, rate based ow control protocols, as well as closed loop, window based ow control protocols. Central to the framework is the concept of a service curve element, whose departure process is bounded betwe...

Journal: :IEEE Trans. Pattern Anal. Mach. Intell. 1994
David A. Cohn Eve A. Riskin Richard E. Ladner

We examine how the performance of a memoryless vector quantizer changes as a function of its training set size. Speci cally, we study how well the training set distortion predicts test distortion when the training set is a randomly drawn subset of blocks from the test or training image(s). Using the Vapnik-Chervonenkis dimension, we derive formal bounds for the di erence of test and training di...

Journal: :CoRR 2010
Jinhui Chen Dirk T. M. Slock

This paper presents the impact of frequency diversity on the optimum expected end-to-end distortion (EED) in an outage-free wideband multiple-input multiple-output (MIMO) system. We provide the closed-form expression of optimum asymptotic expected EED comprised of the optimum distortion exponent and the multiplicative optimum distortion factor for high signal-to-noise ratio (SNR). It is shown t...

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