Display control device

A display control device that performs display control of a display unit on which a virtual object along with a real space is displayed, the display control device comprising:

• processing circuitry configured to
• detect a mode corresponding to a level of understanding of a spatial structure of the real space displayed on the display unit;
• control a display mode of the virtual object on the display unit according to the detected mode;
• and
• change the display mode of the virtual object on the display unit from a first display mode corresponding to a first mode to a second display mode corresponding to a second mode via one or more intermediate display modes between the first display mode and the second display mode when the detected mode changes from the first mode corresponding to a first level of understanding to the second mode corresponding to a second level of understanding,
• wherein
• the processing circuitry is further configured to gradually change the display mode of the virtual object from the first display mode to the second display mode over a predetermined transition period,
• the second display mode includes a display mode in which a part of the virtual object hidden by the real object is displayed transparently,
• the one or more intermediate display modes include a display mode in which the part of the virtual object hidden in the real object is displayed semi-transparently, and
• the change from the first display mode to the second display mode indicates a transition of the virtual object's appearance relative to the real object from being displayed in front of the real object to being occluded by the real object.