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6 CONCLUSIONS
We have presented and validated a sub-frame time
model and a synchronization method for the rolling
shutter sensor. We use photographic flashes as sub-
frame synchronization events that enable us to find
parameters of an affine synchronization model. The
differences of the synchronized time at events that
should be ideally 0 are in range from 0.3 to 0.5 mil-
liseconds. We validated the synchronization method
by interpolating a puck position between two frames
in one camera and checking against the real position
in other camera.
We published
3
the synchronization code as an
easy to use Python module and the paper itself is
available in an executable form that allows anybody
to reproduce the results and figures.
ACKNOWLEDGEMENTS
Both authors were supported by SCCH GmbH un-
der Project 830/8301434C000/13162. Ji
ˇ
r
´
ı Matas has
been supported by the Technology Agency of the
Czech Republic research program TE01020415 (V3C
– Visual Computing Competence Center). We would
like to thank Amden s.r.o. for providing the ice
hockey video data.
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