Image conversion for signage

A system for image conversion for signage, comprising:

• a display device comprising a display surface;
• a camera;
• a shape unit that determines a shape model of a three-dimensional object;
• a display unit that determines geometric properties of the display surface of the display device including a position and orientation of the display surface in a space;
• a viewing position unit that determines a viewing position of the camera in the space, and the shape unit being configured to determine a position and orientation of the shape model in the space;
• a computing unit that determines a shape model of physical objects that are present around the display surface and computes a two-dimensional view of the three-dimensional object and of the shape model of the physical objects around the display surface, as seen from the viewing position, wherein the two-dimensional view shows the three-dimensional object in the context of the physical objects;
• and
• a display that displays the two-dimensional image as a preview image of an image that is visible through the camera,
• wherein the computing unit also computes an inverse perspective projection of at least a part of the object that is visible from the viewing position onto the display surface based on the viewing position to generate a display image, where the display image, when displayed on the display surface and viewed from the viewing position, appears to show the three-dimensional object with a position and orientation according to the position and orientation of the shape model in the space,
• wherein the display device is configured to display the display image on the display surface, and
• wherein the camera is configured to capture an image of the display surface displaying the display image.