TY - GEN
T1 - Autocalibration of an electronic compass for augmented reality
AU - Hu, Xiaoming
AU - Liu, Yue
AU - Wang, Yongtian
AU - Hu, Yanling
AU - Yan, Dayuan
PY - 2005
Y1 - 2005
N2 - Electronic compass is often used to provide the absolute heading reference for tracking the user's head and hands in Virtual Reality (VR) and Augmented Reality (AR), especially for outdoor AR applications. However, compass is vulnerable to environment magnetism disturbance. Existing compass calibration methods require complex steps and true heading reference which is often impossible to be obtained in outdoor AR applications, and is useful only when compass is in horizontal plane. An autocalibration method without the need of heading reference and redundant sensors is proposed in this paper. First the compass error model based on physical principle is presented, then the algorithm to calculate the compensation coefficients with a set of sample measurements of the sensors in the compass is described. Because the influence of the environmental disturbance has been effectively compensated, the calibrated compass can provided accurate heading even when it is under large tilt attitude.
AB - Electronic compass is often used to provide the absolute heading reference for tracking the user's head and hands in Virtual Reality (VR) and Augmented Reality (AR), especially for outdoor AR applications. However, compass is vulnerable to environment magnetism disturbance. Existing compass calibration methods require complex steps and true heading reference which is often impossible to be obtained in outdoor AR applications, and is useful only when compass is in horizontal plane. An autocalibration method without the need of heading reference and redundant sensors is proposed in this paper. First the compass error model based on physical principle is presented, then the algorithm to calculate the compensation coefficients with a set of sample measurements of the sensors in the compass is described. Because the influence of the environmental disturbance has been effectively compensated, the calibrated compass can provided accurate heading even when it is under large tilt attitude.
UR - http://www.scopus.com/inward/record.url?scp=33745827447&partnerID=8YFLogxK
U2 - 10.1109/ISMAR.2005.21
DO - 10.1109/ISMAR.2005.21
M3 - Conference contribution
AN - SCOPUS:33745827447
SN - 0769524591
SN - 9780769524597
T3 - Proceedings - Fourth IEEE and ACM International Symposium on Symposium on Mixed and Augmented Reality, ISMAR 2005
SP - 182
EP - 183
BT - Proceedings - Fourth IEEE and ACM International Symposium on Symposium on Mixed and Augmented Reality, ISMAR 2005
T2 - 4th IEEE and ACM International Symposium on Symposium on Mixed and Augmented Reality, ISMAR 2005
Y2 - 5 October 2005 through 8 October 2005
ER -