Selective mesh refinement
First Claim
1. Method for the encoding of a source mesh (M) representing a 3D object in which is determined a simple mesh (M0) with a limited number of faces, each defined by vertices, ridges, and coefficients in a base of wavelets of a function (f) of which said source mesh is the image defined on said simple mesh (M0), so as to give a subdivision of said source mesh (M) into successive refined meshes (or sub-meshes) (Mj), according to a predetermined criterion, which comprises:
- each of the faces of said meshes (Mj) is subdivided into a limited number of facets to form the higher-level mesh (Mj+1), andthe subdivisions of said face corresponding solely to those needed to comply with a condition of affinity of said function (f) on said face.
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Abstract
The invention concerns a method for coding an original mesh representing a three-dimensional object, which consist in determining a simple meshing having a reduced number of defined faces each defined by vertices and edges, then coefficients in a wavelet base of a function whereof said source mesh is the image defined on said simple mesh, so as to supply successive refined meshes. The method is characterized in that each of the faces of said meshes is subdivided into a limited number of facets to form the higher level mesh, the subdivisions of said surface corresponding only to those required for observing an affinity condition of said function of said face. The invention also concerns the corresponding method for reconstructing the mesh.
34 Citations
8 Claims
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1. Method for the encoding of a source mesh (M) representing a 3D object in which is determined a simple mesh (M0) with a limited number of faces, each defined by vertices, ridges, and coefficients in a base of wavelets of a function (f) of which said source mesh is the image defined on said simple mesh (M0), so as to give a subdivision of said source mesh (M) into successive refined meshes (or sub-meshes) (Mj), according to a predetermined criterion, which comprises:
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each of the faces of said meshes (Mj) is subdivided into a limited number of facets to form the higher-level mesh (Mj+1), and the subdivisions of said face corresponding solely to those needed to comply with a condition of affinity of said function (f) on said face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification