The Silhouettes section of the Visibility on Photos pane controls whether 2D silhouettes (marks on photographs) are visible on the open photographs. To show the 3D silhouette (or projection) on a photo, you need to enable 3D surfaces in the Surfaces section (see below).
The Silhouettes section will only appear on this pane if at least one silhouette has been marked in the project.
When PhotoModeler is in Silhouette marking mode the silhouette mark type is forced to be visible.
Note: 3D items are displayed on oriented photographs only. See the section on Photo Projections for more information.