The Cloud/Mesh section of the Visibility on Photos pane has two controls. These settings apply only to PhotoModeler Premium when Clouds/Meshes are created using DSM.
The first is the Cloud/Mesh control which sets whether 3D Clouds/Meshes are projected back onto photos. The second is the Contours control which sets whether contours from 3D Meshes are projected back onto photos.
For information on creating DSMs, please refer to Dense Surface Modeling / PhotoModeler Premium.
Note: 3D items such as Clouds/Meshes and their contours are displayed on oriented photographs only. See the section on Photo Projections for more information.