TY - GEN
T1 - Fast image registration with non-stationary Gauss-Markov random field templates
AU - Ramamurthy, Karthikeyan Natesan
AU - Thiagarajan, Jayaraman J.
AU - Spanias, Andreas
PY - 2009
Y1 - 2009
N2 - Non-stationary Gauss-Markov random fields are required in modeling images with complex patterns. In this paper, we propose a framework for registering images to a nonstationary Gauss-Markov random field template in anM x M lattice, with a complexity of order M2 logM, considering only global translations. We simplify the likelihood computation by expressing it as a scalar product and we estimate the maximal likelihood translation using 2-D FFTs. We demonstrate the utility of this framework by applying it to image registration in a wavelet-domain template learning application. Results reveal that significant complexity reduction is achieved in image registration compared to straightforward registration in the wavelet domain.
AB - Non-stationary Gauss-Markov random fields are required in modeling images with complex patterns. In this paper, we propose a framework for registering images to a nonstationary Gauss-Markov random field template in anM x M lattice, with a complexity of order M2 logM, considering only global translations. We simplify the likelihood computation by expressing it as a scalar product and we estimate the maximal likelihood translation using 2-D FFTs. We demonstrate the utility of this framework by applying it to image registration in a wavelet-domain template learning application. Results reveal that significant complexity reduction is achieved in image registration compared to straightforward registration in the wavelet domain.
KW - Discrete Fourier transforms
KW - Gauss-Markov random field
KW - Image registration
KW - Pattern matching
UR - http://www.scopus.com/inward/record.url?scp=77951970850&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951970850&partnerID=8YFLogxK
U2 - 10.1109/ICIP.2009.5414177
DO - 10.1109/ICIP.2009.5414177
M3 - Conference contribution
AN - SCOPUS:77951970850
SN - 9781424456543
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - 185
EP - 188
BT - 2009 IEEE International Conference on Image Processing, ICIP 2009 - Proceedings
PB - IEEE Computer Society
T2 - 2009 IEEE International Conference on Image Processing, ICIP 2009
Y2 - 7 November 2009 through 10 November 2009
ER -