Title :
Dependence in sensory data combination
Author :
Chung, Albert C S ; Shen, Helen C.
Author_Institution :
Dept. of Comput. Sci., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong
Abstract :
It is common to assume sensor independence in the sensory data fusion and integration. The authors previously (1997, 1998) illustrated that the team consensus approach based on information entropy can remarkably improve the measurement accuracy. The major benefits of the approach are (a) the simple linear combination of the weighted initial expected estimates for each sensor; and (b) the low order bivariate likelihood functions which can be represented easily. In this paper, we demonstrate specifically both the positive and negative impacts of including dependent information in sensory data combination process; and show how the measurable consensus uncertainty level can be derived. A comparison of the team consensus approach with the Bayesian approach is presented
Keywords :
Bayes methods; entropy; sensor fusion; Bayesian approach; dependence; information entropy; low-order bivariate likelihood functions; measurable consensus uncertainty level; measurement accuracy; sensory data combination; sensory data fusion; team consensus approach; weighted initial expected estimates; Bayesian methods; Computer science; Estimation error; Information entropy; Marine vehicles; Measurement uncertainty; Random variables; Redundancy; Sensor fusion; Sonar;
Conference_Titel :
Intelligent Robots and Systems, 1998. Proceedings., 1998 IEEE/RSJ International Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-4465-0
DOI :
10.1109/IROS.1998.724839