| dc.description.abstract | V-PITS (Video Based Phonomicrosurgery Instrument Tracking System) is a system developed
to estimate the trajectory of instruments performing a simulated phonomicrosurgery exercise.
It first captures a synchronized pair of videos using a calibrated stereo camera rig. Next, it
processes both videos with a tracking algorithm that is run off-line on each video twice, once
for each instrument. The tracking algorithm detects a set of features in each frame related to
instrument position and orientation. Finally, a trajectory estimation algorithm uses the feature
data from both videos to estimate 3D trajectory.
V-PITS consists of a data acquisition and algorithm component that are described in this document.
The algorithm component is based on a position estimation methodology which is also
described. Experiments are reported that characterize system noise and displacement measurement
accuracy. Uncertainty in the position reported by V-PITS due to noise was characterized
as +/- 0.073 mm. Displacement measurement accuracy was characterized as 0.15 mm RMS. | en |
