Title :
A reduced sufficient statistics tracking algorithm for infared images
Author :
Anderson, Kraig L. ; Iltis, Ronald A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
31 Oct-2 Nov 1994
Abstract :
The problem of tracking a target using a sequence of infrared (IR) images is addressed. A Bayes-closed estimation algorithm developed by Kulhavy (see International Journal of Adaptive Control and Signal Processing, vol.4, p.271-285, 1990) is shown to be well-suited to the IR tracking problem. Due to the form of the model for the radiation intensity pattern on the IR focal plane array, closed-form expressions are found for the reduced sufficient statistics (RSS) which are used to approximate the true posterior density in the Kulhavy algorithm. An estimate of the target state is then derived via a reconstruction formula from the RSS. For comparison, both a previously developed IR tracking algorithm based on an extended Kalman filter (EKF) and the new RSS-based algorithm are used to track a target through a sequence of IR images. It is shown, that the RSS algorithm can maintain track in high velocity scenarios where the EKF diverges
Keywords :
Bayes methods; Kalman filters; filtering theory; focal planes; image sequences; optical tracking; statistical analysis; target tracking; tracking filters; Bayes-closed estimation algorithm; IR focal plane array; IR image sequence; IR tracking; IR tracking algorithm; Kulhavy algorithm; closed-form expressions; extended Kalman filter; high velocity scenarios; infared images; posterior density; radiation intensity pattern; reconstruction formula; reduced sufficient statistics tracking algorithm; target state estimation; Adaptive control; Adaptive signal processing; Array signal processing; Closed-form solution; Image reconstruction; Infrared imaging; Signal processing algorithms; State estimation; Statistics; Target tracking;
Conference_Titel :
Signals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-6405-3
DOI :
10.1109/ACSSC.1994.471544