Better implementation of thumbnail() method in case of 4D images; Flip thumbnails according to ITK direction matrix
Better implementation of thumbnail() method in case of 4D images; Flip thumbnails according to ITK direction matrix

NicolasSchnitzler/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public,aabadie/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public