Method for constructing images of a pair of glasses
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.
1. A method for constructing images of a pair of glasses, comprising:
creating a digital model of the pair of glasses by
a positioning aid step for the pair of glasses in a field of view including movable fastening of the pair of glasses to a support pivoting about a vertical axis placed opposite at least two vertically spaced image shooting devices;
acquisition of 2D images of 2D views of the pair of glasses by the image shooting devices during a rotation of the pair of glasses about the vertical axis;
colorimetric correction of the acquired 2D images of the pair of glasses;
clipping of at least one part of the acquired 2D images in order to calculate a set of 2D silhouettes of the pair of glasses to be reconstructed;
calculation, based of the obtained 2D silhouettes, of a volumetric representation of the pair of glasses;
calculation with a surface extraction algorithm of a surface representation of the pair of glasses;
smoothing and simplification of a 3D surface mesh of the pair of glasses; and
a step of segmentation of the digital model of the pair of glasses in 2 bows and a rest of a frame with definition of pivot points.
2. A method for constructing images of a pair of glasses, comprising:
creating a digital model of the pair of glasses by
a positioning aid step for the pair of glasses in a field of view including movable fastening of the pair of glasses to a support pivoting about a vertical axis placed opposite at least two vertically spaced image shooting devices;
acquisition of 2D images of 2D views of the pair of glasses by the image shooting devices during a rotation of the pair of glasses about the vertical axis;
colorimetric correction of the acquired 2D images of the pair of glasses;
clipping of at least one part of the acquired 2D images in order to calculate a set of 2D silhouettes of the pair of glasses to be reconstructed;
calculation, based of the obtained 2D silhouettes, of a volumetric representation of the pair of glasses;
calculation with a surface extraction algorithm of a surface representation of the pair of glasses;
smoothing and simplification of a 3D surface mesh of the pair of glasses; and
a symmetrization step for the digital model of the pair of glasses.
3. The method according to claim 1 , further comprising:
a semi-automatic step of forming a profile of a three-dimensional path; and
a step enabling semi-automatic reconstruction of a glasses lens of the pair of glasses using a profile of a three-dimensional path that is itself determined semi-automatically.
4. The method according to claim 1 ,
further comprising a step of generating glasses lenses, of the pair of glasses, by parametric approximation that guarantees a constant curvature.
5. A method for constructing images of a pair of glasses, comprising:
creating a digital model of the pair of glasses by
a positioning aid step for the pair of glasses in a field of view including movable fastening of the pair of glasses to a support pivoting about a vertical axis placed opposite at least two vertically spaced image shooting devices;
acquisition of 2D images of 2D views of the pair of glasses by the image shooting devices during a rotation of the pair of glasses about the vertical axis;
colorimetric correction of the acquired 2D images of the pair of glasses;
clipping of at least one part of the acquired 2D images in order to calculate a set of 2D silhouettes of the pair of glasses to be reconstructed;
calculation, based of the obtained 2D silhouettes, of a volumetric representation of the pair of glasses;
calculation with a surface extraction algorithm of a surface representation of the pair of glasses;
smoothing and simplification of a 3D surface mesh of the pair of glasses; and
a step of computer-aided production of a model of a pair of glasses nearest to an existing model.