Generalized Least Squares-Based Parametric Motion Estimation Under Non-uniform Illumination Changes
The estimation of parametric global motion has had a significant attention during the last two decades, but despite the great efforts invested, there are still open issues. One of the most important ones is related to the ability to recover large deformation between images in the presence of illumination changes while kipping accurate estimates. In this paper, a Generalized least squared-based motion estimator is used in combination with a dynamic image model where the illumination factors are functions of the localization (x,y) instead of constants, allowing for a more general and accurate image model. Experiments using challenging images have been performed showing that the combination of both techniques is feasible and provides accurate estimates of the motion parameters even in the presence of strong illumination changes between the images.
Unable to display preview. Download preview PDF.
- 1.Bober, M., Kittler, J.V.: Robust motion analysis. In: IEEE Conf. on Computer vision and Pattern Recognition, pp. 947–952 (1994)Google Scholar
- 2.Graham, D., Finlayson, S.D., Drew, M.S.: Removing shadows from images. In: Heyden, A., Sparr, G., Nielsen, M., Johansen, P. (eds.) ECCV 2002. LNCS, vol. 2353, pp. 823–836. Springer, Heidelberg (2002)Google Scholar
- 5.Lai, S.-H., Fang, M.: Robust and efficient image alignment with spatially varying illumination models. In: IEEE Computer Society Conference on Computer Vision and Pattern Recognition, vol. 02, p. 2167 (1999)Google Scholar
- 7.Montoliu, R., Pla, F.: Generalized least squares-based parametric motion estimation. Technical Report 1/10/2007, University Jaume I (October 2007)Google Scholar
- 8.Montoliu, R., Pla, F., Klaren, A.: Illumination Intensity, Object Geometry and Highlights Invariance in Multispectral Imaging. In: Marques, J.S., Pérez de la Blanca, N., Pina, P. (eds.) IbPRIA 2005. LNCS, vol. 3522, pp. 36–43. Springer, Heidelberg (2005)Google Scholar