McGlone - 13 
Some Considerations in 3D 
Object Modeling 
Chris McGlone 
Digital Mapping Laboratory 
School of Computer Science 
Carnegie Mellon University 
Joint Workshop 
ISPRS WG III /2 & IC WG II/III 
The Role of Models in Automated Scene Analysis 
August 30, 1995 
DIGITAL MAPPING LABORATORY 
1 
Object Modeling 
Why should we be concerned 
with model types? 
Aren’t they all equivalent? 
NO! 
Algorithmic requirements 
• efficiency 
• representation of necessary features 
• usually all that’s considered 
Implicit assumptions about object, scene 
Precision, reliability 
Interchange 
2 
DIGITAL MAPPING LABORATORY 
Object Modeling