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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsGorka Arrizabalaga, Jean-Francois Mainguet
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A method for displaying an image onto a relief projection surface using a projection system includes the automatic measurement, using a fixed camera, of the distance separating virtual reference frame points projected onto the projection surface, from real reference frame points produced on a three-dimensional screen to set the projection system, acquisition, by the same fixed camera as that used during the setting of the projection system, of an image of a rear face of the three-dimensional screen, identification of the position of a finger in contact with a front face of the three-dimensional screen in the acquired image, and control of an appliance according to the identified position of the finger.
A method for displaying an image onto a relief projection surface using a projection system, the method comprising setting the projection system to obtain and save a value of a setting parameter thereof, defining one of colors and textures for individual facets of a computer model defining the relief projection surface, constructing an image to be projected according to the computer model of at least one of the colors and textures defined for the individual facets and of the saved value of the setting parameter, and projecting the constructed image onto a projection surface of a three-dimensional screen produced in a translucent material, the screen comprising a front face on which the projected image is displayed and a rear face forming the projection surface, wherein setting the projection system comprises automatically measuring, using a fixed camera, a distance separating virtual reference frame points projected onto the projection surface from real reference frame points produced on the three-dimensional screen, the method further comprising acquiring, using the fixed camera, an image of the rear face of the three-dimensional screen, identifying a position of a finger in contact with the front face of the three-dimensional screen in the acquired image, and controlling an appliance according to the identified position of the finger.
An apparatus for displaying a three-dimensional image, the system comprising a projector suitable for projecting an image onto a relief projection surface, an electronic memory containing a computer model defining the relief projection surface and positions of at least four virtual reference frame points on the relief projection surface, a three-dimensional screen produced in a translucent material, the screen comprising a front face on which is displayed the projected image and a rear face forming the projection surface, and real reference frame points that are fixed, with no degree of freedom, on the projection surface at the positions of the virtual reference frame points defined by the computer model, and an electronic computer programmed to construct an image containing the virtual reference frame points based at least in part on the computer model and a value chosen for at least one parameter of the projection system that can be set, and to control the projection of the constructed image onto the projection surface, by the projector, an electronic measuring instrument for measuring a distance separating, on the projection surface, the projected virtual reference frame points from the real reference frame points, the electronic measuring instrument comprising a fixed camera, and wherein the computer is further programmed for automatically setting the value of the setting parameter of the projection system according to the distance measured by the electronic instrument, acquiring, by the fixed camera, an image of the rear face of the three-dimensional screen, identifying a position of a finger in contact with the front face of the three-dimensional screen in the acquired image, and controlling an appliance according to the identified position of the finger.
Dependencies are inferred from the claim text.