TY - GEN
T1 - Adaptive multiple-input constrained pel-recursive displacement estimation
AU - Efstratiadis, Serafim N.
AU - Katsaggelos, Aggelos K
PY - 1992/1/1
Y1 - 1992/1/1
N2 - In this paper, an adaptive multiple-input pel-recursive displacement estimation algorithm is presented. The displacement vector field (DVF) is estimated by minimizing the linearized displaced frame difference (DFD) using v submasks of causal mask around the working point. Then, v corresponding systems of equations are formed and the set theoretic regularization approach that is followed results in a weighted constrained least-squares estimation of the DVF by using information about the variance of the linearization error (noise) and the solution. The prior information about the solution is incorporated into the algorithm using a causal "oriented smoothness" constraint (OSC) which also provides a spatial prediction model for the estimated DVF. The improved performance of the proposed algorithm with respect to accuracy, robustness to occlusion and smoothness of the estimated DVF is demonstrated.
AB - In this paper, an adaptive multiple-input pel-recursive displacement estimation algorithm is presented. The displacement vector field (DVF) is estimated by minimizing the linearized displaced frame difference (DFD) using v submasks of causal mask around the working point. Then, v corresponding systems of equations are formed and the set theoretic regularization approach that is followed results in a weighted constrained least-squares estimation of the DVF by using information about the variance of the linearization error (noise) and the solution. The prior information about the solution is incorporated into the algorithm using a causal "oriented smoothness" constraint (OSC) which also provides a spatial prediction model for the estimated DVF. The improved performance of the proposed algorithm with respect to accuracy, robustness to occlusion and smoothness of the estimated DVF is demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=84947659899&partnerID=8YFLogxK
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U2 - 10.1109/ICASSP.1992.226205
DO - 10.1109/ICASSP.1992.226205
M3 - Conference contribution
AN - SCOPUS:84947659899
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 245
EP - 248
BT - ICASSP 1992 - 1992 International Conference on Acoustics, Speech, and Signal Processing
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1992
Y2 - 23 March 1992 through 26 March 1992
ER -