Full field motion estimation for large non rigid bodies usingcorrelation/relaxation labelling

摘要

A technique for determining the full field motion of large,non-rigid bodies is presented. The technique has two stages. Firstly, anumber of candidate displacement vectors are generated for a series ofregularly spaced templates, using a region-based matching procedure.These multiple candidates are then smoothed using probabilisticrelaxation labelling. The relaxation routine gauges the compatibilitybetween pairs of labels for templates within a local neighbourhood. Thesize of the neighbourhood is determined by the Hamming distance betweentemplate centres. This approach copes well with errors in the initialmatching caused by uncertainties in the correlation surface. Results arepresented in application to a time sequence of high resolution digitalimages, obtained from photographic negatives of a glacial scene in NewZealand's Mount Cook National Park