Geodesics-Based Image Registration: Applications To Biological And Medical Images Depicting Concentric Ring Patterns
Résumé
In many biological or medical applications images which contain sequences of shapes are common. The existence of high interindividual variability makes their interpretation complex. In this work, we address the computer-assisted interpretation of such images and we investigate how new images may be interpreted so that it conforms to widely-accepted images previously interpreted. The proposed approach relies on the development of an efficient image registration technique. We first show the inadequacy of state-of-art intensity-based and feature-based registration techniques for the considered image datasets. Then we propose a robust variational method which benefits from the geometrical information present in this type of images. In the proposed non-rigid geodesics-based registration, the successive shapes are represented by a level-set representation, which we rely on to carried out the registration. The successive level sets are regarded as elements in a shape space and the corresponding matching is that of the optimal geodesic path. The proposed registration scheme is tested on synthetic images and real images. The comparison against results of state-of-art methods proves the relevance of the proposed method for this type of images.