An improved method for assessing the technical accuracy of optical tracking systems for orthopaedic surgical navigation

2021 ◽  
Author(s):  
S. Herregodts ◽  
M. Verhaeghe ◽  
B. De Coninck ◽  
M. Forward ◽  
M. A. Verstraete ◽  
...  
Keyword(s):  
Surgical Navigation ◽  
Optical Tracking ◽  
Tracking Systems ◽  
Improved Method ◽  
Technical Accuracy

Quantification of clutter in electro-optical tracking systems

1994 ◽  
Author(s):  
Gillian K. Groves ◽  
Kim M. Chacon ◽  
Kenneth E. Prager ◽  
Larisa Stephan
Keyword(s):  
Optical Tracking ◽  
Tracking Systems

scholarly journals Precision, repeatability and accuracy of Optotrak® optical motion tracking systems

2016 ◽  
Author(s):  
Jill Schmidt ◽  
Devin R. Berg
Keyword(s):  
Rigid Body ◽  
Motion Tracking ◽  
Surgical Navigation ◽  
Plane Motion ◽  
Human Motion ◽  
Tracking Systems ◽  
Total Displacement ◽  
Camera Systems ◽  
Optical Motion ◽  
Optical Motion Tracking

In the field of biomechanics, optical motion tracking systems are commonly used to record human motion and assist in surgical navigation. Recently, motion tracking systems have been used to track implant and bone motion on a micron-level. The present study evaluated four different Optotrak® motion tracking systems to determine the precision, repeatability and accuracy under static testing conditions. The distance between the camera systems and the rigid body, as well as the tilt angle of the rigid body, did affect the resulting precision, repeatability and accuracy of the camera systems. The precision and repeatability, calculated as the within-trial and between-trial standard deviations, respectively, were less than 30 µm; with some configurations producing precision and repeatability less than 1 µm. The accuracy was less than 0.53% of the total displacement for the in-plane motion and less than 1.56% of the total displacement for the out-of-plane motion.

scholarly journals Design optimisation for optically tracked pointers

2017 ◽  
Vol 8 (1) ◽  
pp. 10
Author(s):  
Bert De Coninck ◽  
Jan Victor ◽  
Patrick De Baets ◽  
Stijn Herregodts ◽  
Matthias Verstraete
Keyword(s):  
Error Analysis ◽  
Tracking Error ◽  
Rigid Bodies ◽  
Optical Tracking ◽  
Target Point ◽  
Tracking Systems ◽  
Design Optimisation ◽  
Final Design ◽  
Normally Distributed

The use of mechanical pointers in optical tracking systems is needed to aid registration processes of unlocated rigid bodies. Error on the target point of a pointer can cause wrong positioning of vital objects and as such these errors have to be avoided. In this paper, the different errors that originate during this process are described, after which this error analysis is used for the optimisation of an improved pointer design. The final design contains six coplanar fiducials, favored by its robustness and low error. This configuration of fiducials is then analysed theoretically as well as practically to understand how it is performing. The error on tracking the target point of the pointer is found with simulation to be around 0.7 times the error of measuring one fiducial in space. However, practically this error is about equal to the fiducial tracking error, due to the non-normally distributed errors on each separate fiducial.

Dual mode control for electro-optical tracking systems

2016 ◽  
Vol 24 (2) ◽  
pp. 335-342
Author(s):  
彭树萍 PENG Shu-ping ◽  
李 博 LI Bo ◽  
姜润强 JIANG Run-qiang ◽  
陈长青 CHEN Chang-qing ◽  
于洪君 YU Hong-jun
Keyword(s):  
Optical Tracking ◽  
Tracking Systems ◽  
Dual Mode ◽  
Mode Control

Fuzzy Adaptive Control of Airborne Electro-Optical Tracking Systems Based on Variable Universe

2011 ◽  
Vol 383-390 ◽  
pp. 5972-5977
Author(s):  
Song Gao ◽  
Xiao Xia Xu ◽  
Qin Kun Xiao ◽  
Quan Pan
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Fuzzy Controller ◽  
Dynamic Performance ◽  
Optical Tracking ◽  
Control Performance ◽  
Tracking Systems ◽  
Variable Universe ◽  
Fuzzy Control Algorithm ◽  
Fuzzy Adaptive

In order to improve the control performance of airborne EO tracking systems, we develop a proposed variable universe control algorithm based on fuzzy reasoning. The algorithm combines a new fuzzy control algorithm with classic PID control algorithm and greatly improves the dynamic performance of the airborne EO tracking systems. The simulation results indicate that the adaptive fuzzy controller can ensure the precision of the system with better adaptability and robustness.

Accuracy of image-guided surgical navigation using near infrared (NIR) optical tracking

2015 ◽  
Author(s):  
Raphael Jakubovic ◽  
Hamza Farooq ◽  
Joseph Alarcon ◽  
Victor X. D. Yang
Keyword(s):  
Near Infrared ◽  
Surgical Navigation ◽  
Optical Tracking ◽  
Image Guided

Advances in automatic electro-optical tracking systems

1992 ◽  
Author(s):  
Andrew D. Hughes ◽  
Anthony J. E. Moy
Keyword(s):  
Optical Tracking ◽  
Tracking Systems
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