9th international fall workshop vision, modeling, and visualization 2004
DESCRIPTION
Thomas Lewiner. Luiz Velho. Hélio Lopes. Vinícius Mello. PUC-Rio de Janeiro INRIA - Sophia Antipolis. IMPA - Rio de Janeiro. PUC-Rio de Janeiro. IMPA - Rio de Janeiro. Simplicial Isosurface Compression. Regular Binary Multi-Triangulation. Base Level Compression. - PowerPoint PPT PresentationTRANSCRIPT
9th International Fall WorkshopVISION, MODELING, AND VISUALIZATION 2004November 16 - 18, 2004Stanford (California), USA
Regular Binary Multi-Triangulation
Topology Control
Distortion Control
Base Level Compression
Progressive Refinements
Results
Regular Base DataRegular Base Data Irregular Base DataIrregular Base Data
Stellar Operations :Stellar Operations :
No ControlNo Control
Topology ControlTopology Control
Original ImageOriginal Image
Original ImageOriginal Image No ControlNo Control
Curvature ControlCurvature Control Distortion ControlDistortion Control
Distortion Distortion Approximation :Approximation :
Topology Topology Characterization :Characterization :
IMPA - Rio de Janeiro
Luiz Velho Hélio LopesPUC-Rio de Janeiro
Vinícius MelloIMPA - Rio de Janeiro
Thomas LewinerPUC-Rio de Janeiro
INRIA - Sophia Antipolis
Original ModelOriginal Model
No ControlNo Control
Distortion ControlDistortion Control
No ControlNo Control Topology ControlTopology ControlOriginal ModelOriginal Model
Adaptive Adaptive neighbourhood neighbourhood compressioncompression
Multi-componentMulti-componentusing decoded using decoded informationinformation
Final geometry Final geometry encoding with encoding with predictionprediction
TubularTubularneighbourhood extensions:neighbourhood extensions:
DecodingDecodingrefinementsrefinementsof the RBMTof the RBMT
Decoding of the Decoding of the signs of the new signs of the new
close vertices.close vertices.
Encoding only the tubularEncoding only the tubularneighbourhood :neighbourhood :
Traversal along the tubularTraversal along the tubularneighbourhood :neighbourhood :
Location: level 4,up, Left, Right, L, R.First triangle: - - +
Vertex signs:- - + + + + + + - - - - + + - +
(2 known vertices) - + -
Location: level 5,down, L R L L L.First triangle: - + +
Vertex levels and signs> - = - <
= + > - > + > - = - < +
Loc: 5, down,L L L L L.First: - + +
Vertex levels and signs> - = (known)
= + > - > + > - = - < +
Uniform neighbourhood compressionUniform neighbourhood compression
Adaptive neighbourhood compressionAdaptive neighbourhood compression
Uniform RefinementsUniform RefinementsAdaptive Refinements Adaptive Refinements
with geometrywith geometry
Arithmetic encoding with context and Arithmetic encoding with context and prediction :prediction :