نتایج جستجو برای: blob analysis

تعداد نتایج: 2825308  

Journal: :Statistics and Computing 2021

We propose a novel discrete method of constructing Gaussian Random Fields based on combination modified spectral representations, Fourier and Blob. The is intended for Direct Numerical Simulations the V-Langevin equations. latter are stereotypical descriptions anomalous stochastic transport in various physical systems. From an Eulerian perspective, our designed to exhibit improved convergence r...

2011
Kai Cordes Oliver Topic Manuel Scherer Carsten Klempt Bodo Rosenhahn Jörn Ostermann

We present a method to classify atomic density distributions using CCD images obtained in a quantum optics experiment. The classification is based on the scale invariant detection and precise localization of the central blob in the input image structure. The key idea is the usage of an a priori known shape of the feature in the image scale space. This approach results in higher localization acc...

2004
Per-Erik Forssén Anders Moe

This report describes how blob features can be used for automatic estimation of the fundamental matrix from two perspective projections of a 3D scene. Blobs are perceptually salient, homogeneous, compact image regions. They are represented by their average colour, area, centre of gravity and inertia matrix. Coarse blob correspondences are found by voting using colour and local similarity transf...

2001
Sheh-Yi Sheu Dah-Yen Yang

We propose a three-dimensional ~3-D! tube model consisting of a sequence of connected two-gate blobs for an ion channel and a microtube of a molecular motor. Due to the competition effect between two gates ~or sinks! on the same blob surface, the escape pathway for the Brownian particle inside a blob is selected by these two gates owing to gate modulation. Furthermore, there exists a nonzero ne...

Journal: :Physical review letters 2008
A Diallo A Fasoli I Furno B Labit M Podestà C Theiler

The global dynamic of plasma blobs in a shear flow is investigated in a simple magnetized torus using the spatial Fourier harmonics (k-space) framework. Direct experimental evidence of a linear drift in k space of the density fluctuation energy synchronized with blob events is presented. During this drift, an increase of the fluctuation energy and a production of the kinetic energy associated w...

2014
Maxim Karpushin Giuseppe Valenzise Frédéric Dufaux

With the increasing availability of low-cost – yet precise – depth cameras, “texture+depth” content has become more and more popular in several computer vision and 3D rendering tasks. Indeed, depth images bring enriched geometrical information about the scene which would be hard and often impossible to estimate from conventional texture pictures. In this paper, we investigate how the geometric ...

2005
Thatsaphan Suwannathat Masahide Kaneko

This paper presents a system to track moving humans in an indoor environment. We propose a cooperative approach of monocular camera and omnidirectional camera to the problem of finding humans by a mobile robot. A cooperation of fixed and moving platforms is proposed for this approach, which features background subtraction, pixel classification, color blob merging, color blob relation and segmen...

2006
JIAN-GUO LIU ZHOUPING XIN

We prove the convergence of vortex blob methods to classical weak solutions for the twodimensional incompressible Euler equations with initial data satisfying the conditions that the vorticity is a finite Radon measure of distinguished sign and the kinetic energy is locally bounded. This includes the important example of vortex sheets. The result is valid as long as the computational grid size ...

2017
Ramanpreet Kaur Dapinder Kaur

The blob detection methods plays the vital role in the various image processing models. The blob detection models are utilized for the localization of the visible objects in the given images in order to understand the type and size of the objects. The blob detection can be utilized for the classification, categorization and other purposes in the image processing models. In the proposed model, t...

2014
Hiroki Hasegawa Seiji Ishiguro

Recently, it was reported that the evidence of non-diffusive (that is, convective) plasma transport from the edge of core plasma to the first wall in magnetic confinement fusion devices. Such a transport is thought to be provided by intermittent filamentary coherent plasma structures “blobs” in scrape-off layer (SOL) [1]. Many theoretical and numerical studies about blob dynamics have been perf...

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