نتایج جستجو برای: blob analysis

تعداد نتایج: 2825308  

Journal: :Journal of Visualization and Computer Animation 2005
Xiaogang Jin Shengjun Liu Charlie C. L. Wang Jieqing Feng Hanqiu Sun

In this paper, we propose a novel practical method for blob-based liquid 3D morphing. Firstly, blobby objects are employed to approximate a given polygonal surface. The primitives in the medial axis sphere-tree of a polygonal model are utilized as initial blobs— this greatly improves the robustness and efficiency of the blob-based approximation. Secondly, we establish the blob correspondences b...

2009
Johan Anderson

A theory of the probability distribution function (PDF) tails of the blob density in plasma edge turbulence is provided. A simplified model of the fast convective radial transport is used. The theoretically predicted PDF tails corroborate earlier measurements of edge transport, further confirming the strongly non-Gaussian feature of edge transport. It is found that increasing the cross sectiona...

Journal: :Calculus of Variations and Partial Differential Equations 2019

2006
B. P. Gong

Superluminal motion has been interpreted as relativistically moving out flow. The increasing observations of such sources provide chance to investigate their mechanism in detail. This paper proposes that superluminal motion may be jet precession induced blob motion. This model can interpret a number of observational phenomena which are not well understood under the scenario of bulk motion, such...

2007
T. Bhatt Yi-Chung Pai

A person's awareness of potential slippery walking conditions induces a cautious gait pattern. The purposes of this study were to determine whether neuromechanical changes associated with such cognitive conditioning are sufficient to alter the outcome of a slip and whether the effects of such conditioning are comparable to those of motor training. Prior to their own first slip exposure, 18 youn...

2003
Shu-Fai Wong Kwan-Yee Kenneth Wong

Human body tracking is useful in applications like medical diagnostic, human computer interface, visual surveillance etc. In most cases, only rough position of the target is needed, and blob tracking can be used. The blob region is located within a searching window, which is shifted and resized in each frame based on previous observations. The observations are the locations of the blob in the f...

2007
Jaime Dalla Valle Luiz Eduardo Soares de Oliveira Alessandro L. Koerich Alceu de Souza Britto

This paper presents a novel approach for automatic people counting in videos captured through a conventional closed-circuit television (CCTV) using computer vision techniques. The proposed approach consists of detecting and tracking moving objects in video scenes to further counting them when they enters into a virtual counting zone defined in the scene. One of the main problems of using conven...

2011
B. Labit

The link between toroidal flows and density blobs is experimentally demonstrated in TORPEX simple magnetized plasmas: momentum is transferred from an ideal-interchange mode to density blobs. The phase shift between the toroidal flow and the density perturbations observed in the interchange mode where the blob is born is conserved along the blob radial trajectory. This leads to dipolar structure...

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