Estimation of discontinuous displacement vector fields with the minimum description length criterion

A noniterative approach to determine displacement vector fields with discontinuities is described. In order to overcome the limitations of current methods, the problem is regarded as a general modeling problem. From this point of view the imaging field consists of a set of regions with common properties and their boundaries. The strategy proposed is an analysis of consistency of the displacement estimators between different levels of regularization. This gives local but noisy evidence of possible model boundaries at multiple scales. With the two constraints of continuous lines of discontinuities and the spatial coincidence assumption, consistent boundary evidence is found. Based on this combined evidence the model is updated so that it describes homogeneous regions with sharp discontinuities.<>