نتایج جستجو برای: curvelet sub

تعداد نتایج: 208852  

2014
Lei Yu Xinyue Zhang Liying Zheng

Tracking object from video sequences has become a very popular problem in the field of computer vision. Many algorithms have been proposed to solve this problem. Combined with the energy of curvelet coefficients and Kalman filter method, a new object tracking algorithm is proposed based on fast discrete curvelet transform. Firstly, this algorithm is initialized with the establishment of a movin...

Journal: :Multiscale Modeling & Simulation 2006

2004
Emmanuel J. Candès Laurent Demanet

This paper argues that curvelets provide a powerful tool for representing very general linear symmetric systems of hyperbolic differential equations. Curvelets are a recently developed multiscale system [9, 5] in which the elements are highly anisotropic at fine scales, with effective support shaped according to the parabolic scaling principle width ≈ length at fine scales. We prove that for a ...

2004
Emmanuel J. Candès Laurent Demanet

In this tutorial lecture we review the recent result that curvelets provide a powerful tool for representing very general linear symmetric systems of hyperbolic differential equations. Curvelets are a recently developed multiscale system [8, 5] in which the elements are highly anisotropic at fine scales, with effective support shaped according to the parabolic scaling principle width ≈ length a...

Journal: :IEICE Transactions 2014
Lijian Zhou Wanquan Liu Zhe-Ming Lu Tingyuan Nie

In this Letter, a new face recognition approach based on curvelets and local ternary patterns (LTP) is proposed. First, we observe that the curvelet transform is a new anisotropic multi-resolution transform and can efficiently represent edge discontinuities in face images, and that the LTP operator is one of the best texture descriptors in terms of characterizing face image details. This motiva...

2017

The goal of image fusion is to integrate complementary information from multi focus information such the new pictures area unit additional appropriate for the aim of computer-processing tasks like segmentation and feature extraction. In This work presents a picture fusion theme that is predicated on the Curvelet model (DCT). The curvelet transforms of the input pictures area unit fittingly comb...

2012
M. Kalaivani

Retinal images play a major role in several applications including the ocular fundus operations and human recognition. They also play vital roles in detection of diabetes in early stages by comparing the states of retinal blood vessels. The detection of blood vessels from the retinal images is usually a tedious process. In this work a new algorithm to detect the blood vessels effectively has be...

2009
Mohammed Rziza Mohamed El Aroussi Mohammed El Hassouni Sanaa Ghouzali Driss Aboutajdine

In this paper, an efficient local appearance feature extraction method based the multi-resolution Curvelet transform is proposed in order to further enhance the performance of the well known Linear Discriminant Analysis(LDA) method when applied to face recognition. Each face is described by a subset of band filtered images containing block-based Curvelet coefficients. These coefficients charact...

Journal: :IOSR Journal of Electronics and Communication Engineering 2013

2007
Felix J. Herrmann Gilles Hennenfent

Seismic data recovery from data with missing traces on otherwise regular acquisition grids forms a crucial step in the seismic processing flow. For instance, unsuccessful recovery leads to imaging artifacts and to erroneous predictions for the multiples, adversely affecting the performance of multiple elimination. A non-parametric transform-based recovery method is presented that exploits the c...

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