DocumentCode :
1492852
Title :
A viewpoint planning strategy for determining true angles on polyhedral objects by camera alignment
Author :
Madsen, Claus B. ; Christensen, Henrik I.
Author_Institution :
Lab. of Image Anal., Aalborg Univ., Denmark
Volume :
19
Issue :
2
fYear :
1997
fDate :
2/1/1997 12:00:00 AM
Firstpage :
158
Lastpage :
163
Abstract :
The paper presents a viewpoint planning strategy which automatically guides a movable camera from an arbitrary position to a position where the optical axis is perpendicular to a plane spanned by any two intersecting edges on a polyhedral object, i.e., a junction. In related work it is common to use the changing length of edge segments to control such alignment, but we demonstrate the use of the apparent angle between the edge segments of the junction. Based on the control on the apparent angle we achieve robustness as well as independence of distance to the object and focal length. The strategy is able to determine the true angle of a junction with an accuracy of approximately 1°, and align with an accuracy of approximately 6°
Keywords :
active vision; edge detection; object recognition; planning (artificial intelligence); position control; active vision; apparent angle; camera alignment; edge segments; focal length; polyhedral objects; true angles; viewpoint planning; Automatic control; Cameras; Control systems; Image reconstruction; Object recognition; Optical control; Optical sensors; Robust control; Shape; Strategic planning;
fLanguage :
English
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
Publisher :
ieee
ISSN :
0162-8828
Type :
jour
DOI :
10.1109/34.574798
Filename :
574798
Link To Document :
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