This article presents a new algorithm for the automated reconstruction and visualization of damag... more This article presents a new algorithm for the automated reconstruction and visualization of damaged ancient inscriptions. After reviewing current methods for enhancing incisions, a hybrid approach is adopted that combines advantages of 2D and 3D analytical techniques. A photogrammetric point cloud of an inscription is projected orthographically from an ideal vantage point, generating a 2.5D raster, including channels describing depth and surface derivatives. The next consideration is the obstacle to legibility posed by breaks in the ancient surface, which motivates the development of a new segmentation algorithm based on SLIC superpixels with region-merging adapted to operate on the geometry of the inscribed surface instead of color or intensity values. The algorithm classifies surface points by their likelihood of belonging to the uninscribed original plane, deliberate strokes, or breaks. Results are visualized in a manner suited for epigraphical analysis and publication through st...
This chapter describes a new user-specific 2D to 3D lip animation technique. 2D lip contour posit... more This chapter describes a new user-specific 2D to 3D lip animation technique. 2D lip contour position and corresponding motion information are provided from a 2D lip contour extraction algorithm. Static face measurements are obtained from 3D scanners or stereovision systems. The data is combined to generate an initial subject-dependent 3D lip surface. The 3D lips are then modelled as a set of particles whose dynamic behaviour is governed by Smooth Particles Hydrodynamics. A set of forces derived from ellipsoid muscle encircling the lips simulates the muscles controlling the lips motion. The 3D lip model is comprised of more than 300 surface voxels and more than 1300 internal particles. The advantage of the particle system is the possibility of creating a more complex system than previously introduced surface models.
This article presents a new algorithm for the automated reconstruction and visualization of damag... more This article presents a new algorithm for the automated reconstruction and visualization of damaged ancient inscriptions. After reviewing current methods for enhancing incisions, a hybrid approach is adopted that combines advantages of 2D and 3D analytical techniques. A photogrammetric point cloud of an inscription is projected orthographically from an ideal vantage point, generating a 2.5D raster, including channels describing depth and surface derivatives. The next consideration is the obstacle to legibility posed by breaks in the ancient surface, which motivates the development of a new segmentation algorithm based on SLIC superpixels with region-merging adapted to operate on the geometry of the inscribed surface instead of color or intensity values. The algorithm classifies surface points by their likelihood of belonging to the uninscribed original plane, deliberate strokes, or breaks. Results are visualized in a manner suited for epigraphical analysis and publication through st...
This chapter describes a new user-specific 2D to 3D lip animation technique. 2D lip contour posit... more This chapter describes a new user-specific 2D to 3D lip animation technique. 2D lip contour position and corresponding motion information are provided from a 2D lip contour extraction algorithm. Static face measurements are obtained from 3D scanners or stereovision systems. The data is combined to generate an initial subject-dependent 3D lip surface. The 3D lips are then modelled as a set of particles whose dynamic behaviour is governed by Smooth Particles Hydrodynamics. A set of forces derived from ellipsoid muscle encircling the lips simulates the muscles controlling the lips motion. The 3D lip model is comprised of more than 300 surface voxels and more than 1300 internal particles. The advantage of the particle system is the possibility of creating a more complex system than previously introduced surface models.
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