Method for combining fast surface and exact volume visualization techniques in medicine

1994 ◽  
Author(s):  
Karl-Hans Englmeier ◽  
Michael Haubner ◽  
H. M. Foerterer ◽  
W. Perzl ◽  
B. K. Fink ◽  
...  
Keyword(s):  
Volume Visualization ◽  
Visualization Techniques

A Volume-Based Geometric Reasoning Approach for Diecastability Evaluation

1995 ◽  
Author(s):  
S. C. Lu ◽  
A. B. Rebello ◽  
R. A. Miller ◽  
G. L. Kinzel ◽  
R. Yagel
Keyword(s):  
Volume Visualization ◽  
Casting Process ◽  
Preliminary Design ◽  
City Block ◽  
Die Geometry ◽  
Part Geometry ◽  
Related Part ◽  
Die Casting Process ◽  
Visualization Techniques

Abstract Because of the nature of the die casting process, the part geometry severely restricts the die geometry and hence affects the quality of the part. However, as is often the case in other manufacturing processes, diecastings are currently designed purely based on their function. The manufacturability of the diecastings is not considered until the design has been nearly completed and detailed. This is due to the design support limitations of current CAE tools. In this paper, we present a new volume-based approach to support diecastability evaluation, especially in preliminary design. Our approach can be applied to arbitrarily shaped parts without pre-defined feature libraries. The focus is on the identification of geometric characteristics, e.g. heavy mass regions, that could be responsible for thermal-related part defects. A distance transform with city-block metric is used to extract this geometric property. Volume visualization techniques are also adopted to allow users to visualize the results in a clear and precise way.

Visualizing the Time Motion of Planar Mechanisms With Volume Methods

2005 ◽  
Author(s):  
Mike Bailley
Keyword(s):  
Volume Visualization ◽  
Spatial Dimension ◽  
Three Dimensions ◽  
Time Dimension ◽  
Modeling And Analysis ◽  
Planar Mechanism ◽  
Time Motion ◽  
Novel Approach ◽  
3D Volume ◽  
Visualization Techniques

Two dimensional, or planar, mechanism design is a mainstay of Mechanical Engineering modeling and analysis. An important part of the design process is the visualizing of the motion of the mechanism. This paper describes a novel approach to visualizing the time motion of a planar mechanism — turning the time dimension into a spatial dimension. All three dimensions (x,y,time) are then treated as a 3D volume. From there, we use interactive volume visualization techniques, including slicing and thresholding. As is seen, this method is able to produce new insights into planar mechanism motion, particularly when more than one mechanism is working cooperatively.

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