Patent Document ID: 20110170767
Application ID: 12680557
Patent Status: 0

Claim One:
1. A method for constructing a digital image of a three-dimensional surface of a physical object, this method comprising the operations consisting in: choosing a surface on the object; placing, facing said surface, a projector equipped with a light source, an optical axis, and a mask defining a speckle pattern comprising a multitude of points with predetermined light intensities and/or colors, directing the optical axis of the projector towards the surface to be imaged, projecting, along the optical axis, the speckle pattern onto the surface, acquiring and storing a two-dimensional image of the speckle pattern projected onto the surface and deformed by the latter, by means of an optical sensor disposed in the optical axis of the projector, comparing, for at least a selection of points from the speckle pattern, the image of the deformed speckle pattern with an image of the non-deformed speckle pattern, as projected onto a reference plane, calculating, for each point of the selection, at least the depth coordinate, measured parallel to the optical axis, of the projection of this point on the surface.