Authors:
Franz Andert
1
;
Simon Freudenthal
2
and
Stefan Levedag
3
Affiliations:
1
DLR (German Aerospace Center), Germany
;
2
Technische Universität Braunschweig, Germany
;
3
Head of the DLR-Institute of Flight Systems, Germany
Keyword(s):
Image Processing, Stereo Triangulation, Sports Application, Rotating Disc, Flight Aerodynamics.
Related
Ontology
Subjects/Areas/Topics:
Applications and Services
;
Computer Vision, Visualization and Computer Graphics
;
Entertainment Imaging Applications
;
Motion, Tracking and Stereo Vision
;
Pervasive Smart Cameras
;
Video Surveillance and Event Detection
Abstract:
This paper presents a method to estimate the trajectory and the flight distance of thrown pigeon clays. The
basic principle is to measure the beginning of the flight with a camera system in order to forecast the further
flight down to the ground impact. The demand of such advanced measuring methods arises from sporting
clays competition regulations, where the launching machines have to be adjusted towards specific throwing
angles and ranges. The presented method uses a wide-baseline stereo camera system (32 m camera distance) to
measure the 3D clay disc positions, and the flight parameters are then identified by aerodynamic and kinematic
considerations. This allows to estimate the whole path and the throwing distance, especially without a need
to measure the ground impact itself. Applying this method to sporting clays facilities, the launching machines
can be adjusted easier and more precisely, being advantageous especially for competitions. Additionally, it
becomes possible to obtai
n the theoretical throwing distance on small sports areas bounded by nets or walls
where a ground impact is not measurable.
(More)