MESHGRID is a novel, compact, multiscalable and animation-friendly surface representation method, which has been introduced in MPEG-4 [1]. The MESHGRID representation attaches a description of the {"}global connectivity{"} between the vertices on the object's surface (i.e., the 3-D connectivity wireframe) to a regular 3-D grid of points (i.e., the reference grid). MESHGRID efficiently encodes the 3-D connectivity wireframe by using a new type of 3-D extension of Freeman chain-code. MESHGRID does not explicitly store the polygons of the surface, since the 3-D connectivity wireframe has particular connectivity properties allowing for the unambiguous derivation of the triangulation. The reference grid is a smooth vector field defined on a regular discrete 3-D space. This grid is efficiently compressed by using an embedded 3-D wavelet-based multiresolution intra-band coding algorithm. MESHGRID can be efficiently exploited for QoS since it allows for three types of scalability in both view-dependent and view-independent scenarios, including: 1) resolution scalability, i.e., the adaptation of the number of transmitted vertices; 2) shape precision, i.e., the adaptive reconstruction of the reference grid positions; and 3) vertex position scalability, i.e., the change of the precision of known vertex positions with respect to the reference grid. Furthermore, in addition to the classical vertex-based animation, MESHGRID also supports specific animation capabilities, such as: 1) rippling effects by changing the position of the vertices relative to corresponding reference grid points and 2) reshaping on a hierarchical basis of the regular reference grid and its attached vertices.
Salomie Ioan, A, Munteanu, A, Gavrilescu, I, Lafruit, G, Schelkens, P, Deklerck, R & Cornelis, J 2004, 'Meshgrid - A Compact, Multi-scalable and Animation-Friendly Surface Representation', IEEE Transactions on Circuits and Systems for Video Technology, vol. 14, no. 7, pp. 950-966.
Salomie Ioan, A., Munteanu, A., Gavrilescu, I., Lafruit, G., Schelkens, P., Deklerck, R., & Cornelis, J. (2004). Meshgrid - A Compact, Multi-scalable and Animation-Friendly Surface Representation. IEEE Transactions on Circuits and Systems for Video Technology, 14(7), 950-966.
@article{25712707381d4b029fc279a267f4cfe5,
title = "Meshgrid - A Compact, Multi-scalable and Animation-Friendly Surface Representation",
abstract = "MESHGRID is a novel, compact, multiscalable and animation-friendly surface representation method, which has been introduced in MPEG-4 [1]. The MESHGRID representation attaches a description of the {"}global connectivity{"} between the vertices on the object's surface (i.e., the 3-D connectivity wireframe) to a regular 3-D grid of points (i.e., the reference grid). MESHGRID efficiently encodes the 3-D connectivity wireframe by using a new type of 3-D extension of Freeman chain-code. MESHGRID does not explicitly store the polygons of the surface, since the 3-D connectivity wireframe has particular connectivity properties allowing for the unambiguous derivation of the triangulation. The reference grid is a smooth vector field defined on a regular discrete 3-D space. This grid is efficiently compressed by using an embedded 3-D wavelet-based multiresolution intra-band coding algorithm. MESHGRID can be efficiently exploited for QoS since it allows for three types of scalability in both view-dependent and view-independent scenarios, including: 1) resolution scalability, i.e., the adaptation of the number of transmitted vertices; 2) shape precision, i.e., the adaptive reconstruction of the reference grid positions; and 3) vertex position scalability, i.e., the change of the precision of known vertex positions with respect to the reference grid. Furthermore, in addition to the classical vertex-based animation, MESHGRID also supports specific animation capabilities, such as: 1) rippling effects by changing the position of the vertices relative to corresponding reference grid points and 2) reshaping on a hierarchical basis of the regular reference grid and its attached vertices.",
keywords = "MeshGrid, scalable mesh coding, animation",
author = "{Salomie Ioan}, Alexandru and Adrian Munteanu and Ion Gavrilescu and Gauthier Lafruit and Peter Schelkens and Rudi Deklerck and Jan Cornelis",
note = "IEEE Transactions on Circuits and Systems for Video Technology, Vol. 14, Nr. 7, pp. 950-966.",
year = "2004",
month = jul,
language = "English",
volume = "14",
pages = "950--966",
journal = "IEEE Transactions on Circuits and Systems for Video Technology",
issn = "1051-8215",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "7",
}