Method and system for displaying vector data as stream lines in

Details Method and system for displaying vector data as stream lines in Method and system for displaying vector data as stream lines in

1995-06-27

1998-06-09

Jankus, Almis R.

G06T 1700

Patent

active

057648727

ABSTRACT:
A method and apparatus for displaying stream lines in a space are disclosed. First, the space is divided into a plurality of tetrahedral cells. Position data of each vertex of the tetrahedral cells and vector data at each position are collected. A critical point for each tetrahedral cell is then computed. The critical point is within the tetrahedral cell and for which the vector data becomes zero. Using the collected position and vector data, a Jacobian matrix J is calculated when such a critical point is found, and eigenvalues of the Jacobian matrix J are also calculated. Next, the starting point of a stream line within a tetrahedral cell is calculated for each of the eigenvalues by moving a microscopic distance from the critical point. Finally, a stream line is calculated from the starting point, and the stream line is displayed.

REFERENCES:
patent: 5459820 (1995-10-01), Schroeder
S. Choudhury & R. A. Nicolaides, Discretization of Incompressible Vorticity-Velocity Equations on Triangular Meshes, International Journal for Numerical Methods in Fluids, vol. 11, 823-833, 1990 (XP 000579344) (by John Wiley & Sons, Ltd).
R. M. Ford, R. N. Strikland & B. A. Thomas, Image Models for 2-D Flow Visualization and Compression, 243a Graphical Models and Image Processing, 56 (1994) Jan., No. 1, Orlando, FL. vol. 56, No. 1, pp. 75-93, 1994, (1994 Academic Press Inc. ).
J. Helman & L. Hesselink, Representation and Display of Vecotr Field Topology in Fluid Flow Data Sets, 8153 IEEE Computer, No. 8, pp. 27-36, Aug. 22, 1989.
C. Levit, T. Lasinki, A Tool for Visualizing the Topology of Three-Dimensional Vector Fields, A Globus, Computer Sciences Corp., NASA Ames Research Center IEEE Visualization '91, pp. 33-40, 1991.
Helman and Hesselink, Visualizing Vector Field Topology in Fluid Flows, IEEE Computer Graphics an Applicaitons, vol. 11, No. 3, pp. 33-46.

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