NDLI: Delphi: geometry-based connectivity prediction in triangle mesh compression

Content Provider	Springer Nature Link
Author	Coors, Volker Rossignac, Jarek
Copyright Year	2004
Abstract	Delphi is a new geometry-guided predictive scheme for compressing the connectivity of triangle meshes. Both compression and decompression algorithms traverse the mesh using the EdgeBreaker state machine. However, instead of encoding the EdgeBreaker clers symbols that capture connectivity explicitly, they estimate the location of the unknown vertex, v , of the next triangle. If the predicted location lies sufficiently close to the nearest vertex, w , on the boundary of the previously traversed portion of the mesh, then Delphi estimates that v coincides with w . When the guess is correct, a single confirmation bit is encoded. Otherwise, additional bits are used to encode the rectification of that prediction. When v coincides with a previously visited vertex that is not adjacent to the parent triangle (EdgeBreaker S case), the offset, which identifies the vertex v , must be encoded, mimicking the cut-border machine compression proposed by Gumhold and Strasser. On models where 97% of Delphi predictions are correct, the connectivity is compressed down to 0.19 bits per triangle. Compression rates decrease with the frequency of wrong predictors, but remains below 1.50 bits per triangle for all models tested.
Starting Page	507
Ending Page	520
Page Count	14
File Format	PDF
ISSN	01782789
Journal	The Visual Computer
Volume Number	20
Issue Number	8-9
e-ISSN	14322315
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-09-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Triangle meshes Connectivity coding Geometric prediction Geometry compression
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Computer Vision and Pattern Recognition Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Triangle mesh compression along the Hamiltonian cycle

Exploiting Connectivity to Improve the Tangential Part of Geometry Prediction

Edgebreaker: connectivity compression for triangle meshes

Adaptive coding of generic 3D triangular meshes based on octree decomposition

Optimized Edgebreaker encoding for large and regular triangle meshes

Progressive 3D mesh compression using MOG-based Bayesian entropy coding and gradual prediction

R-D optimized progressive compression of 3D meshes using prioritized gate selection and curvature prediction

Random Accessible Mesh Compression Using Mesh Chartification

Wavelet-based progressive compression scheme for triangle meshes: wavemesh

Delphi: geometry-based connectivity prediction in triangle mesh compression

Similar Documents

Triangle mesh compression along the Hamiltonian cycle

Exploiting Connectivity to Improve the Tangential Part of Geometry Prediction

Edgebreaker: connectivity compression for triangle meshes

Adaptive coding of generic 3D triangular meshes based on octree decomposition

Optimized Edgebreaker encoding for large and regular triangle meshes

Progressive 3D mesh compression using MOG-based Bayesian entropy coding and gradual prediction

R-D optimized progressive compression of 3D meshes using prioritized gate selection and curvature prediction

Random Accessible Mesh Compression Using Mesh Chartification

Wavelet-based progressive compression scheme for triangle meshes: wavemesh

Delphi: geometry-based connectivity prediction in triangle mesh compression