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Coding polygon meshes as compressable ASCII

Martin Isenburg, Jack Snoeyink
2002 Proceeding of the seventh international conference on 3D Web technology - Web3D '02  
The coder is lossless when only the position and texture coordinate indices are coded.  ...  Because of the convenience of a text-based format 3D content is often published in form of a gzipped file that contains an ASCII description of the scene graph.  ...  for each of the p positions. • An array of 2t floats that specifies the u and v coordinate for each of the t texture coordinates. • An array of c+f integers that specifies a position index for each corner  ... 
doi:10.1145/504502.504503 dblp:conf/vrml/IsenburgS02 fatcat:5hr37iaudfhe3d5aevrz2wvcya

Lossless Compression of Floating-Point Geometry

Martin Isenburg, Peter Lindstrom, Jack Snoeyink
2004 Computer-Aided Design and Applications  
In this paper we describe how to compress floating-point coordinates using predictive coding in a completely lossless manner.  ...  While connectivity is encoded in a lossless manner, the floating-point coordinates associated with the vertices are quantized onto a uniform integer grid for efficient predictive compression.  ...  Typically there are also mesh properties such as texture coordinates, material attributes, etc. that, for example, describe the visual appearance of the mesh at rendering time.  ... 
doi:10.1080/16864360.2004.10738292 fatcat:6hf5fxerqvblretsbj2jg63vyy

Compression of parametric surfaces for efficient 3D model coding

Diego Santa-Cruz, Touradj Ebrahimi, C.-C. Jay Kuo
2002 Visual Communications and Image Processing 2002  
The coding scheme consists in coding the NURBS parameters (knots and control points) using a predictive scheme, coupled with uniform quantization and entropy coding.  ...  In the field of compression, the type of 3D models traditionally considered is that of polygonal meshes, for which several efficient compression techniques have been proposed in the recent years.  ...  ACKNOWLEDGMENTS The NURBS models used to evaluate the proposed scheme were created with the Alpha 1 geometric modeling system at the Computer Science Department, University of Utah.  ... 
doi:10.1117/12.453068 fatcat:mpiyzyervfbyfa6lvpg65lat4y

A distance-based compression of 3D meshes for mobile devices

Daeyoung Kim, Sungyeol Lee, Haeyoung Lee, Sungdae Cho
2008 IEEE transactions on consumer electronics  
We present a new 3D mesh codec for mobile devices. Mobile devices have limited resources such as low memory, slow CPU speed, low power, and no floating-point processor.  ...  For a progressive geometry coding, an octree is created and coded. For a single-rate connectivity coding, a new distance based algorithm is introduced.  ...  Floating point arithmetic is essential for precise prediction, local coordinate transformation, and various filtering for a context modeling.  ... 
doi:10.1109/tce.2008.4637633 fatcat:ausru2nbs5bofnrgo3h4323evy

Source coding for transmission of reconstructed dynamic geometry: a rate-distortion-complexity analysis of different approaches

Rufael N. Mekuria, Pablo Cesar, Dick C. A. Bulterman, Andrew G. Tescher
2014 Applications of Digital Image Processing XXXVII  
We evaluate rate-performance-complexity of different configurations. First, we investigate 3D mesh compression methods (i.e. dynamic/static) from MPEG-4.  ...  Live 3D reconstruction of a human as a 3D mesh with commodity electronics is becoming a reality.  ...  The method in [12] uses entropy coding to code the resulting serialized point cloud (i.e. the bytes representing the subdivision).  ... 
doi:10.1117/12.2063657 fatcat:l47d6cmds5ewzgu5nal2aey6hq

Compression of time-dependent geometry

Jerome Edward Lengyel
1999 Proceedings of the 1999 symposium on Interactive 3D graphics - SI3D '99  
With a quality threshold of 30dB SNR, for an animated chicken character, compression ratios of 30x are achieved with the simple technique of 3D affine transformation matching with residual row prediction  ...  Previous techniques for geometry compression considered only static geometry or techniques for speeding up the calculation of a particular animation method.  ...  The image shown here is reduced from an original matrix of 32 bit floating point numbers with size 400x9090 (400 frames by 3030 vertices by 3 coordinates per vertex.)  ... 
doi:10.1145/300523.300533 dblp:conf/si3d/Lengyel99 fatcat:kbk4idnrezejdpoqr5qkaxi7ce

Scientific Discovery through Advanced Visualization

Kwan-Liu Ma, Greg Schussman, Eric B Lum, Hongfeng Yu, Hiroshi Akiba, Min-Yu Huang, Yue Wang
2005 Journal of Physics, Conference Series  
The SciDAC program of the Department of Energy has brought together tremendous scientific expertises and computing resources to realize the promise of terascale computing for attempting to answer some  ...  Scientific visualization is an indispensable path to gleaning insight from the massive data produced by terascale simulations.  ...  Acknowledgments We would like to thank John Blondin, Jackie Chen, Stephane Ethier, Evatt Hawkes, Wei-Li Lee, Scott Klasky, Kwok Ko, Tony Mezzacappa, Yasutaro Nishimura, Ji Qiang, and Robert Ryne for the  ... 
doi:10.1088/1742-6596/16/1/068 fatcat:jiwfepwcanba7kgosph3oscw3m

Simulation of shallow-water systems using graphics processing units

Miguel Lastra, José M. Mantas, Carlos Ureña, Manuel J. Castro, José A. García-Rodríguez
2009 Mathematics and Computers in Simulation  
The potential data parallelism of this method is identified and the scheme is efficiently implemented on GPUs for one-layer shallow-water systems.  ...  A first order well-balanced finite volume numerical scheme for 2D shallow water systems is considered.  ...  A 2D texture allows the storage of n × m floating point 4-tuples and is mainly used (in graphics applications) to store colours representing an image to be applied to a 3D object.  ... 
doi:10.1016/j.matcom.2009.09.012 fatcat:aqy4mkk63jg35fn4ehkqu5ith4

Fast delivery of 3D web content

Max Limper, Stefan Wagner, Christian Stein, Yvonne Jung, André Stork
2013 Proceedings of the 18th International Conference on 3D Web Technology - Web3D '13  
Despite many advances in mesh compression methods within the past two decades, there is still no consensus about a standardized compact mesh encoding format for 3D Web applications.  ...  Our findings are summarized in concrete recommendations for future standards.  ...  The Pharao model is courtesy of the EU project 3D-COFORM. This work was also partly funded by the EU project v-must (FP7 2007/2013, grant agreement 270404).  ... 
doi:10.1145/2466533.2466536 dblp:conf/vrml/LimperWSJS13 fatcat:vns44g263vcdhe5el63op7frxu

3D Video Recorder: a System for Recording and Playing Free-Viewpoint Video+

Stephan Wurmlin, Edouard Lamboray, Oliver G. Staadt, Markus H. Gross
2003 Computer graphics forum (Print)  
We show how we can trade-off 3D video quality with processing performance and devise efficient compression and coding schemes for our novel 3D video representation.  ...  An off-line processing stage converts these images into a time-varying 3D hierarchical point-based data structure and stores this 3D video to disk.  ...  Zwicker for the point rendering engine and for proofreading the paper.  ... 
doi:10.1111/1467-8659.00659 fatcat:2bkc2gojsrft7mw23xdifw4c6m

Compression of Point-Based 3D Models by Shape-Adaptive Wavelet Coding of Multi-Height Fields [article]

Tilo Ochotta, Dietmar Saupe
2004 Symposium Point-Based Graphics : [Proceedings]  
We propose a compression scheme for coordinate data of point-based 3D models of surfaces.  ...  A rate-distortion optimization provides for an optimal bit allocation for the individual patch codes.  ...  Special thanks go to Jim Fowler for maintaining the QccPack library containing wavelet analysis and coding software. We also thank the reviewers for their useful comments.  ... 
doi:10.2312/spbg/spbg04/103-112 fatcat:wrzgkkdmnrb55d2qbguq7fpy5m

Coding of 3D virtual objects with NURBS

Diego Santa-Cruz, Touradj Ebrahimi
2002 Signal Processing  
Several techniques have been developed for compression of discrete (i.e. piece-wise planar) 3D models, in the form of 3D polygonal meshes.  ...  This paper presents a method for compressing NURBS 3D models with a small and controllable loss.  ...  In Signal Processing, special issue on image and video coding beyond standards, 82 (11)  ... 
doi:10.1016/s0165-1684(02)00303-1 fatcat:mj5rh7bucrc6lmlha7gsli4bku

An overview of ongoing point cloud compression standardization activities: video-based (V-PCC) and geometry-based (G-PCC)

D. Graziosi, O. Nakagami, S. Kuma, A. Zaghetto, T. Suzuki, A. Tabatabai
2020 APSIPA Transactions on Signal and Information Processing  
This article presents an overview of the recent standardization activities for point cloud compression (PCC).  ...  In this paper, we provide a detailed description of both codec algorithms and their coding performances. Moreover, we will also discuss certain unique aspects of point cloud compression.  ...  For the coding of isolated points, since there are no other points within the volume to correlate with, an alternative method to entropy coding the octets, namely Direct Coding Mode (DCM), is introduced  ... 
doi:10.1017/atsip.2020.12 fatcat:heoofmb2xzg4lpmi3npc67cjfm

An improved vertex-clustering-based progressive mesh encoder

Guoping Wang, Yongzhen Wu, Guojing Hu, Jingliang Peng
2014 2014 IEEE International Conference on Multimedia and Expo (ICME)  
In this work, we propose improvements on a state-of-the-art scheme for progressive triangular mesh compression, which is based on hierarchical vertex clustering.  ...  Specifically, we fix several shortcomings of that scheme including quantization error accumulation, false facet generation and lack of facet orientation encoding.  ...  It should be noted that there are also progressive lossless geometry coders [25, 26] that encode the floating-point vertex coordinates directly without quantization.  ... 
doi:10.1109/icme.2014.6890209 dblp:conf/icmcs/WangWHP14a fatcat:nf5z6xsbynh7fdo5oln25rqffa

Geometry coding and VRML

G. Taubin, W.P. Horn, F. Lazarus, J. Rossignac
1998 Proceedings of the IEEE  
A variable length, optionally lossy compression technique is used for vertex positions, normals, colors, and texture coordinates. The format supports all VRML property binding conventions.  ...  Static and dynamic descriptions of 3D objects, multimedia content, and a variety of hyperlinks can be represented in VRML files.  ...  Floating point value encoding The standard binary encoding for IEEE floating points uses 32 bits.  ... 
doi:10.1109/5.687837 fatcat:6khcn7hehra4zjq7z67izg6rau
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