VR Heart Model

MCVL Homepage Department of Computer Engineering and Computer Science

Contact Information:

Jesse Whitlock
Department of Computer Engineering and Computer Science
University of Missouri-Columbia
Columbia, MO 65211
c625336@showme.missouri.edu

K. Palaniappan
Department of Computer Engineering and Computer Science
University of Missouri-Columbia
Columbia, MO 65211
palani@cecs.missouri.edu




Table of Contents

VTK Volume Visualization Example


Surface Modeling

The original model, created by Viewpoint, contained 180,000 polygons. The number was reduced first by eliminating blood vessels on the surface (~80,000 polygons), then using the polygon reduction capabilities of SOFTIMAGE. The surface blood vessels were replaced by TEXTURE MAPPING, which requires much less computing power. This resulted in approximately 27,000 polygons divided between the ten large models.


Dynamic Modeling

The motion of the heart wall is accomplished by using two realisic representations of the heart at its largest and smallest and linearly interpolating between them.

Heart Wall Transformed to Engorged Heart Wall (Difficult to appreciate in static views)

Larger left ventrical Smaller Heart Wall

The objects representing red blood cells are colored red for oxygenated blood and blue for non-oxygenated blood. They are animated to cycle through the appropriate chambers, arteries, and viens to illustrate blood flow. (Shown here with heart wall subtracted )


User Interface

The program is set up to use either the standard examiner viewer (shown) or the fly viewer of the Inventor Mentor. The examiner viewer gives the user the ability to, among other things, rotate, scale, translate, and pick the model apart to examine underlying structures. Many material effects can be performed from the viewer, such as adjusting the transparency and shininess of the model.


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