Results 221 to 230 of about 697,857 (268)
A study on turbulence characteristics of a rectangular three-dimensional wall jet in a confined space using particle image velocimetry. [PDF]
PLoS OneZhang X, Liu H.
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Additive Manufacturing in Organic Chemistry: From Synthesis to Sustainable Process Design. [PDF]
Int J Mol SciDomiński A +2 more
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IEEE Computer Graphics and Applications, 1998
We discuss volume line integral convolution (LIC) techniques for effectively visualizing 3D flow, including using visibility-impeding halos and efficient asymmetric filter kernels. Specifically, we suggest techniques for selectively emphasizing critical regions of interest in a flow; facilitating the accurate perception of the 3D depth and orientation ...
Victoria Interrante, Chester Grosch
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We discuss volume line integral convolution (LIC) techniques for effectively visualizing 3D flow, including using visibility-impeding halos and efficient asymmetric filter kernels. Specifically, we suggest techniques for selectively emphasizing critical regions of interest in a flow; facilitating the accurate perception of the 3D depth and orientation ...
Victoria Interrante, Chester Grosch
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Proceedings of the 1994 IEEE International Conference on Robotics and Automation, 2002
An algorithm for computing 3D motion (velocity field and motion parameters) from a sequence of range images is presented. The algorithm is based on a new integral 3D rigid motion invariant feature which can be computed locally at every point of the moving surface.
Krishnendu Chaudhury +2 more
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An algorithm for computing 3D motion (velocity field and motion parameters) from a sequence of range images is presented. The algorithm is based on a new integral 3D rigid motion invariant feature which can be computed locally at every point of the moving surface.
Krishnendu Chaudhury +2 more
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2022
The 3D (Stanford) Diffuser is identified as a case with complex internal corner flow and 3D separation, is well documented and has a relatively simple geometry. The diffuser has an inlet section, an expansion section and an outlet section (see Figure 1). The flow at the inlet is assumed to be a fully developed rectangular channel flow.
Lehmkuhl, Oriol, Miro, Arnau
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The 3D (Stanford) Diffuser is identified as a case with complex internal corner flow and 3D separation, is well documented and has a relatively simple geometry. The diffuser has an inlet section, an expansion section and an outlet section (see Figure 1). The flow at the inlet is assumed to be a fully developed rectangular channel flow.
Lehmkuhl, Oriol, Miro, Arnau
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Applied Scientific Research, 1993
Particle Tracking Velocimetry (PTV) is one of the evolving techniques which can cover the increasing need for measurements in a Lagrangian frame. Here some recent developments and the validation of the tracking scheme on the Kinematic Simulation Inertial Model (KSIM) test flow field is presented.
Nadeem A. Malik, Th. Dracos
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Particle Tracking Velocimetry (PTV) is one of the evolving techniques which can cover the increasing need for measurements in a Lagrangian frame. Here some recent developments and the validation of the tracking scheme on the Kinematic Simulation Inertial Model (KSIM) test flow field is presented.
Nadeem A. Malik, Th. Dracos
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Potato Chip Singularities of 3D Flows
SIAM Journal on Mathematical Analysis, 2001Summary: A ''potato chip singularity'' forms when two distinct surfaces moving with a three-dimensional (3D) fluid coincide at a finite time. Potato chip singularities were suggested by a numerical study of 3D ideal magnetohydrodynamics. We prove that an incompressible flow satisfying a mild assumption on velocity growth cannot form a potato chip ...
Diego Córdoba, Charles Fefferman
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Ricci Flow for 3D Shape Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2010Ricci flow is a powerful curvature flow method, which is invariant to rigid motion, scaling, isometric, and conformal deformations. We present the first application of surface Ricci flow in computer vision. Previous methods based on conformal geometry, which only handle 3D shapes with simple topology, are subsumed by the Ricci flow-based method, which ...
Wei Zeng 0002 +2 more
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2001
A number of geometric active contour and surface models have been proposed for shape segmentation in the literature. The essential idea is to evolve a curve (in 2D) or a surface (in 3D) so that it clings to the features of interest in an intensity image. Several of these models have been derived, using a variational formulation, as gradient flows which
Kaleem Siddiqi, Alexander Vasilevskiy
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A number of geometric active contour and surface models have been proposed for shape segmentation in the literature. The essential idea is to evolve a curve (in 2D) or a surface (in 3D) so that it clings to the features of interest in an intensity image. Several of these models have been derived, using a variational formulation, as gradient flows which
Kaleem Siddiqi, Alexander Vasilevskiy
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3D Visualization of Echocardiogram and Blood Flow
2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005Congenital heart defect is a leading cause of children mortality. Two-dimensional echocardiography is a safe and noninvasive diagnostic tool and two-dimensional images can be reconstructed to a three-dimensional model. However, for some complex congenital heart diseases, the visualization of three-dimensional cardiac tissue structure alone is not ...
Jun, Wang +4 more
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