title: Registration of bimodal retinal images - improving modifications.
abstract: The proper optical disc segmentation in images provided by confocal laser scanning ophthalmoscope and by color fundus-camera is a necessary step in early glaucoma or arteriosclerosis detection. Fusing information from both modalities into a vector-valued image is expected to improve the segmentation reliability. The paper describes a registration of these images using optimization based on mutual information criterion function extended with gradient-image mutual information. The controlled random search (CRS) has been found to be a more robust optimization routine than the simulated annealing (SA) while tested on a set of 174 image pairs. Finally, the multi-resolution algorithm for bimodal retinal image registration achieving the success-rate of 94% is proposed.
authors.affiliation: Department of Biomedical Engineering, Brno University of Technology, Czech Republic. jan@feec.vutbr.cz
authors.forename: L
authors.initials: L
authors.lastname: Kubecka
authors.forename: J
authors.initials: J
authors.lastname: Jan