Authors:
Katherine Davis
1
;
Vaibhav K. Viswanathan
2
;
Christopher M. Clark
2
;
Timothy Gambin
3
and
Zoë J. Wood
1
Affiliations:
1
Cal Poly, United States
;
2
Harvey Mudd College, United States
;
3
University of Malta, Malta
Keyword(s):
Virtual Camera Path, Probabilistic Road Map, Rule of Thirds, Marine Archeology Visualization.
Related
Ontology
Subjects/Areas/Topics:
Animation and Simulation
;
Computer Vision, Visualization and Computer Graphics
;
Geometry and Modeling
;
Modeling and Simulation for Education and Training
;
Scene and Object Modeling
;
Simulation and Modeling
;
Simulation Tools and Platforms
Abstract:
This paper presents the use of cinematographic and geometric measures for determining the path of a virtual
camera for the generation of computer graphics video sequences focused on showing an underwater shipwreck.
This work rises from the applied challenge of mapping underwater shipwrecks, reconstructing a computer
graphics model then creating an educational visualization of the wreck. The primary algorithm presented
in this work computes the optimal camera pitch and height along a path utilizing a probabilistic roadmap
(PRM) that weights nodes using a computational models of cinematographic and geometric principles. These
principles were used to evaluate potential viewpoints and influence whether or not a view is used in the final
path. Specifically, the algorithm uses a computational evaluation of the cinematographic ‘rule of thirds’ and
a geometric evaluation of the model normals relative to the camera viewpoint. A user study of video output
from the system suggests that our comp
uted paths are ranked higher than simple circular or random paths and
that the ‘rule of thirds’ is a more important criteria than the geometric principle explored.
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