I got the 2D silhouette of 3D object. Then given a pixel i want to find it corresponding 3D point. Any help please Thanks -- View this message in context: http://vtk.1045678.n5.nabble.com/coordinate-transformation-between-polydata-and-image-data-tp3216899p3306759.html Sent from the VTK - Users mailing list archive at Nabble.com.