نتایج جستجو برای: odf above

تعداد نتایج: 249155  

2008
Y. Rathi J. Malcolm S. Bouix G. Kindlmann C-F. Westin M. Kubicki M. E. Shenton

Introduction: Diffusion Tensor Imaging (DTI) is now a well-established scheme for analyzing neural pathways in the brain by means of streamline or probabilistic tractography. But DTI models the diffusion of water molecules by a Gaussian process, while the data captured by the diffusionweighted MRI (DW-MRI) could very well be non-Gaussian. To overcome this limitation, a High Angular Resolution D...

Journal: :International journal of management, technology, and social science 2022

Purpose: Latrine is a symbol of cleanness. It most to have latrine even for getting basic government facilities. Though the country declared ODF, in reality, it difficult maintain status long. There are pieces evidence that ODF zones reverted open defecation over time. was this context, study carried out explore appropriate latrines be constructed case Mahottari District, Nepal. Design/Methodol...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Alexandra Brumberg Kevin Hammonds Ian Baker Ellen H G Backus Patrick J Bisson Mischa Bonn Charles P Daghlian Markus D Mezger Mary Jane Shultz

Physics and chemistry of ice surfaces are not only of fundamental interest but also have important impacts on biological and environmental processes. As ice surfaces-particularly the two prism faces-come under greater scrutiny, it is increasingly important to connect the macroscopic faces with the molecular-level structure. The microscopic structure of the ubiquitous ice Ih crystal is well-know...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2012
Yaniv Gur Fangxiang Jiao Stella Xinghua Zhu Chris R Johnson

Assessing white matter fiber orientations directly from DWI measurements in single-shell HARDI has many advantages. One of these advantages is the ability to model multiple fibers using fewer parameters than are required to describe an ODF and, thus, reduce the number of DW samples needed for the reconstruction. However, fitting a model directly to the data using Gaussian mixture, for instance,...

Journal: :Concurrency - Practice and Experience 1995
Cheng-Zhong Xu Francis C. M. Lau Burkhard Monien Reinhard Lüling

With nearest neighbor load balancing algorithms, a processor makes balancing decisions based on localized workload information and manages workload migrations within its neighborhood. This paper compares a couple of fairly well-known nearest neighbor algorithms , the dimension-exchange (DE, for short) and the diiusion (DF, for short) methods and their several variants|the average dimension-exch...

2017
Jordi Pons Rong Gong Xavier Serra

This paper introduces a new score-informed method for the segmentation of jingju a cappella singing phrase into syllables. The proposed method estimates the most likely sequence of syllable boundaries given the estimated syllable onset detection function (ODF) and its score. Throughout the paper, we first examine the jingju syllables structure and propose a definition of the term “syllable onse...

2010
A. Goh N. Jahanshad P. M. Thompson C. Lenglet

Introduction: The Orientation Distribution Function (ODF), the angular profile of the diffusion probability density function of water molecules, can be estimated from High Angular Resolution Diffusion Imaging (HARDI) data [2]. We present an extension of voxel-based morphometry to ODFs and apply it to brain asymmetry. While little is known about white matter connectivity asymmetry, several recen...

2008
M. Descoteaux J-F. Mangin C. Poupon

INTRODUCTION: Many recent techniques have been introduced for high angular resolution diffusion imaging (HARDI) [1 and references therein], to infer the diffusion or fiber orientation distribution function (ODF) of the underlying tissue structure. These methods, mostly designed for fiber tractography, are normally based on a single shell acquisition and can only recover some angular information...

Journal: :Remote Sensing 2017
Yanfei Zhong Qiong Cao Ji Zhao Ailong Ma Bei Zhao Liangpei Zhang

Hyperspectral images and light detection and ranging (LiDAR) data have, respectively, the high spectral resolution and accurate elevation information required for urban land-use/land-cover (LULC) classification. To combine the respective advantages of hyperspectral and LiDAR data, this paper proposes an optimal decision fusion method based on adaptive differential evolution, namely ODF-ADE, for...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2012
Sylvain Merlet Emmanuel Caruyer Rachid Deriche

In this work, we propose an original and efficient approach to exploit the ability of Compressed Sensing (CS) to recover diffusion MRI (dMRI) signals from a limited number of samples while efficiently recovering important diffusion features such as the ensemble average propagator (EAP) and the orientation distribution function (ODF). Some attempts to sparsely represent the diffusion signal have...

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