1. A method for synchronized visualization of two partial scenes, in particular for three-dimensional rendering of contour surfaces of two workpieces, comprising the following the process steps: rendering a first partial scene in a first window of a visualization environment in an associated first view, simultaneously rendering a second partial scene in a second window of the visualization environment in an associated second view, providing an initially neutral main view, linking of the first and second partial scenes by selecting one of the first and second partial scenes and importing the parameters of the view associated with the selected partial scene into the main view, and associating the main view with the first and second partial scenes by rendering the first and second partial scenes in the corresponding windows according to the main view, and importing a manipulation of one of the first and second partial scenes rendered in one window into the main view and rendering the first and second partial scenes in the corresponding windows according to the main view.