Raúl Montoliu Filiberto Pla Generalized Least Squares-Based Parametric Motion Estimation Under Non-uniform Illumination Changes. 660-669 2008 ICIAR http://dx.doi.org/10.1007/978-3-540-69812-8_65 conf/iciar/2008 db/conf/iciar/iciar2008.html#MontoliuP08