Abstract: A method for generating a final image of an individual from an initial image of the individual acquired by a camera, the image being a still or contained in a video stream. The method includes detecting the face of the individual in the initial image, realistic positioning of a virtual frame on the face of the individual, generating an overlay that is superimposed on the initial image, the overlay comprising a projection of all or a portion of the virtual frame, generating the final image by merging the overlay with the initial image. The frame includes at least one ophthalmic lens characterized by an optical correction and/or an optical treatment. The method also includes, before the final step, a step of calculating the rendering of the ophthalmic lens according to the refraction of the ophthalmic lens and of a depth map of the initial image.

Abstract: A method for generating a final image of an individual from an initial image of the individual acquired by a camera, the image being a still or contained in a video stream. The method includes detecting the face of the individual in the initial image, realistic positioning of a virtual frame on the face of the individual, generating an overlay that is superimposed on the initial image, the overlay comprising a projection of all or a portion of the virtual frame, generating the final image by merging the overlay with the initial image. The frame includes at least one ophthalmic lens characterized by an optical correction and/or an optical treatment. The method also includes, before the final step, a step of calculating the rendering of the ophthalmic lens according to the refraction of the ophthalmic lens and of a depth map of the initial image.

Abstract: A method for generating a real-time realistic-looking image of a pair of virtual glasses positioned on a real user face image issued from a single image, a bundle of pictures, a video clip or a real-time camera streams. A face analysis element estimates the 3D rotation matrix, the 3D translation vector, morphology parameters of the user's face. A glasses positioning element associated with a try-on mode for look or real-size simulation estimates the 3D rotation matrix, the 3D translation vector, global and local deformation parameters of the virtual glasses, and arms articulation, adapted to the morphology parameters computed by the face analysis element. A realistic rendering element mixes the real user face image with the virtual glasses positioned by the glasses positioning element.

Abstract: A method of generating a digital model of a lens of a pair of glasses from images of the pair of glasses with an uniform background. The images being taken with a camera of an acquisition device. A silhouette of the lens is generated by clipping the lens in the taken images. A processor is configured to project the silhouette on a 3D surface of the digital model, adjust a surface of degree 2 to the projected silhouette, cut the adjusted surface according to the projected silhouette, extrude the adjusted surface from the 3D surface to obtain the desired thickness of the lens, and apply a realistic texture on the digital model of the lens. The texture depends of the angle of view of the lens.

Abstract: A method of constructing images of a lens of a pair of glasses from an image of the pair of glasses with an uniform background. The image being taken with a numerical acquisition device. A silhouette of the lens is generated by clipping the lens in the taken image. A digital model of the lens is generated by a processor. The processor is configured to project the silhouette on a 3D surface of the digital model, adjust a surface of degree 2 to the projected silhouette, cut the adjusted surface according to the projected silhouette, extrude the adjusted surface from the 3D surface to obtain the desired thickness of the lens, and apply a realistic texture on the digital model of the lens. The texture depends of the angle of view of the lens.

Abstract: A method for generating a real-time realistic-looking image of a pair of virtual glasses positioned on a real user face image issued from a single image, a bundle of pictures, a video clip or a real-time camera streams. A face analysis element estimates the 3D rotation matrix, the 3D translation vector, morphology parameters of the user's face. A glasses positioning element associated with a try-on mode for look or real-size simulation estimates the 3D rotation matrix, the 3D translation vector, global and local deformation parameters of the virtual glasses, and arms articulation, adapted to the morphology parameters computed by the face analysis element. A realistic rendering element mixes the real user face image with the virtual glasses positioned by the glasses positioning element.

Abstract: A method for producing dynamic photorealistic 3D models for digitizing a three-dimensional object, that may include including transparent or reflective parts such as a pair of glasses, is adaptive for visualization and real time fitting, and includes movable fastening of the object to a support, pivoting about a vertical axis, placed opposite at least two vertically spaced image shooting devices, acquisition of object images by the image shooting devices during a rotation of the object about the vertical axis, and colorimetric correction of the acquired images.

Abstract: The method for encoding/decoding three-dimensional meshes of dots or vertices connected in the form of facets delimited by edges; the mesh M is defined by connectivity data T and geometry data G includes the steps of: lossless encoding of the connectivity data T into encoded connectivity data Tc, iteratively generating a progressive mesh hierarchy, i.e. a set of meshes with progressive levels of detail, PM(M*), generating a piecewise smooth approximation M* of the original mesh M, from the mesh connectivity T; this smooth approximation M* being described as follows: a. compressed connectivity data Tc; b. a small number N of control dots and c. a number of indexes S of edges called protruding edges of the mesh M, identified beforehand, using the progressive mesh hierarchy PM(M*) to calculate a prediction of approximation errors in M* compared with the original mesh M.

Abstract: Disclosed is model and a method for producing dynamic photorealistic 3D models that is adaptive for visualization and real time fitting. The invention aims at a method for digitizing a three-dimensional object possibly including transparent or reflective parts from two-dimensional views of this object, the method including: A step for movable fastening of the object to a support, pivoting about a vertical axis, placed opposite at least two vertically spaced image shooting devices, A step for acquisition of object images by the image shooting devices during a rotation of the object about the vertical axis, A colorimetric correction step for the acquired images.

Abstract: The method for encoding/decoding three-dimensional meshes of dots or vertices connected in the form of facets delimited by edges; the mesh M is defined by connectivity data T and geometry data G includes the steps of: lossless encoding of the connectivity data T into encoded connectivity data Tc, iteratively generating a progressive mesh hierarchy, i.e. a set of meshes with progressive levels of detail, PM (M*), generating a piecewise smooth approximation M* of the original mesh M, from the mesh connectivity T; this smooth approximation M* being described as follows: a. compressed connectivity data Tc; b. a small number N of control dots and c. a number of indexes S of edges called protruding edges of the mesh M, identified beforehand, using the progressive mesh hierarchy PM(M*) to calculate a prediction of approximation errors in M* compared with the original mesh M.