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Topic: Geometry Processing

	Geometry Processing - Wikipedia, the free encyclopedia
		Geometry Processing is a fast-growing area of research that uses concepts from applied mathematics, computer science, and engineering to design efficient algorithms for the acquisition, reconstruction, analysis, manipulation, simulation and transmission of complex 3D models.
		Applications of geometry processing algorithms already cover a wide range of areas from multimedia, entertainment, and classical computer-aided design, to biomedical computing, reverse engineering, and scientific computing.
		"Digital Geometry Processing", by Peter Schroder and Wim Sweldens
	en.wikipedia.org /wiki/Geometry_Processing (103 words)

	Processing - Wikipedia, the free encyclopedia
		Processing typically describes the act of taking something through an established and usually routine set of procedures to convert it from one form to another, as a manufacturing procedure, such as processing milk into cheese.
		Processing can also refer to administrative procedure such as processing paperwork to grant a mortgage loan.
		This page was last modified 01:11, 23 April 2006.
	en.wikipedia.org /wiki/Processing (83 words)

	Image and Geometry Processing - NIH Center for Integrative Biomedical Computing at the Scientific Computing and Imaging ...
		Signals, images, and geometries arise in many biomedical applications and their processing and manipulation is essential in many area of biomedical research.
		Signal, image, and geometry processing is a field with great breadth and a wide range of maturity.
		We will also seek to integrate algorithms into comprehensive processing toolkits that will allow scientists to perform all related steps for the processing and analysis of their data, from viewing raw image data to creating complex geometric models of the underlying anatomy.
	www.sci.utah.edu /cibc/research/image-geom_proc.html (459 words)

	CS395T - Assignment 1
		Geometry processing is a per-vertex operation and its performance largely depend on the number of vertices.
		Geometry calculations are simply taking longer because of the additional overhead of including a light source.
		This is because geometry processing dominates for small triangles and different scanline conversion methods do not affect as much.
	www.cs.utexas.edu /users/nav/rtgraphics/CS395T_-_Assignment_1.html (2559 words)

	Hugues Hoppe's home page
		The geometry clipmap introduced in Losasso and Hoppe 2004 is a new level-of-detail structure for rendering terrains.
		Geometry images have the potential to simplify the rendering pipeline, since they eliminate the "gather" operations associated with vertex indices and texture coordinates.
		Neither the topology, the presence of boundaries, nor the geometry of M are assumed to be known in advance — all are inferred automatically from the data.
	research.microsoft.com /~hhoppe (8986 words)

	UCSD Department of Computer Science and Engineering - Abstract - Guskov
		Processing of geometric information stored in such large meshes is the main theme of my talk.
		In the talk, I will present an overview of "digital geometry processing" and cover several techniques recently developed in that field, such as: Multiresolution processing of "raw" irregular meshes with applications to noise removal, filtering, editing and texture mapping.
		Conversion of irregularly sampled geometry into more efficient representations such as semi-regular "normal" meshes, and its applications to geometry compression.
	www-cse.ucsd.edu /home/csecal/abstracts/Guskov-200102.html (187 words)

	GPR Processing Software
		Geometry: Geometry support requires lines to be fairly simple and of constant trace spacing.
		Processing: In addition to pre-processing of raw data, set time zero, depth conversion and elevation corrections are currently supported.
		Processing: Gradix has a comprehensive list of data processing capabilities making it an ideal tool for the user that wants to explore the limits of processing on GPR data.
	www.interpex.com /radar.htm (427 words)

	Division of ENGINEERING & APPLIED SCIENCE at Caltech
		Geometry in this sense refers to geometric representations of objects -- anything from aircraft parts to cartoon characters -- detailed information about size and shape with which 3-D virtual objects can be displayed, measured, and manipulated.
		Now, if you drastically reduce the cost of this technology while improving the quality of applications, geometry processing is likely to be used in many more parts of the manufacturer's enterprise, from design to sales and order fulfillment.
		Improvements in digital geometry compression, which are measured in terms of the number of bits per vertex needed to describe a mesh of triangles within a given margin of error, can be exploited in the same ways as gains in other kinds of compression.
	www.eas.caltech.edu /news/schroder.html (1164 words)

	Caltech Multi-Res Modeling Group - Publications
		We describe a processing pipeline that can be understood as gradually adding order to a given unstructured point cloud until it is completely organized in terms of a smooth surface.
		Abstract: Digital Geometry Processing (DGP) is a newly emerging discipline which aims to build the mathematical and algorithmic foundations for the next generation of digital multimedia.
		Progressive Geometry Compression (Andrei Khodakovsky, Peter Schröder and Wim Sweldens), Proceedings of SIGGRAPH 2000 Abstract: We propose a new progressive compression scheme for arbitrary topology, highly detailed and densely sampled meshes arising from geometry scanning.
	www.multires.caltech.edu /pubs/pubs.htm (11453 words)

	Pedro V. Sander - Publications (Site not responding. Last check: 2007-10-12)
		Geometry videos are based on the “Geometry Image” mesh representation introduced by Gu et al.
		The main insight of this paper, is that Geometry Videos re-sample and re-organize the geometry information, in such a way, that it becomes very compressible.
		While these rendering effects can also be computed in vertex shaders, texture-mapping is advantageous because storing and processing texture images is generally more efficient than refining the geometry to represent the detailed signal at the vertices of a dense mesh.
	www.pedrosander.com /publications (1937 words)

	Mars Odyssey THEMIS Geometry Processing With ISIS
		This document describes ISIS geometry processing for data from the Mars Odyssey THEMIS instrument.
		For spatial locations that correspond to image data from two framelets, the geometry values are computed using the time and spacecraft position for the EARLIER of the two framelets.
		This should be used to prevent multiple concurrent processes from attempting to write to the same session log file at the same time.
	isis.astrogeology.usgs.gov /Isis2/isis-bin/themis_processing.cgi (5502 words)

	SGP 2005 - Symposium on Geometry Processing
		In this emerging area, concepts from applied mathematics, computer science, and engineering are used to design efficient algorithms for the acquisition, manipulation, animation and transmission of complex 3D models.
		Applications of geometry processing algorithms cover a wide range of areas from multimedia and entertainment, to bio-medical computing, reverse engineering, and to classical computer-aided design.
		This symposium followed the highly successful 1st Eurographics Symposium on Geometry Processing, which took place in 2003 in Aachen, Germany, and 2nd Eurographics Symposium on Geometry Processing, which took place in 2004 in Nice (France).
	www.cg.tuwien.ac.at /events/SGP05/cfp.html (138 words)

	MPF 1997 Day 1: 3D Graphics and CPUs \| TG Daily (Site not responding. Last check: 2007-10-12)
		One of the keys to the enabling of 3D processors doing the work of geometry processing instead of the CPU and hence supplying the FPU power needed for this topic is the 3D API that's used, since it has to allow this kind of 'work load sharing'.
		Microsoft is currently deciding if they want allow the shift of the geometry processing from the CPU to the 3D chip whilst planning their next version of DirectX, revision 6.0.
		He demands that textures should be processes from the local graphic memory, since the bandwidth of local graphic memory is still much higher than what AGP offers.
	www.tgdaily.com /1997/10/13/mpf_1997_day_1 (1010 words)

	PolyTrans-for-XSI, Common Geometry Processing Option Descriptions
		These processing functions allow the PolyTrans-for-XSI user to easily and automatically apply all of the common stand-alone PolyTrans geometry and scene processing functions but without having to execute them by hand or work in the stand-alone PolyTrans software itself.
		These polygon processing functions allow polygon vertices to be welded together, normals unified, auto-smoothing to be performed, redundant coordinates to be deleted and triangles merged back into n-sided polygons.
		This is a most useful batch conversion processing function, in particular when you are converting from a CAD-based file format (such as IGES, SolidWorks, Solid Edge, etc) and need to create the dotXSI file with the least number of objects and an optimum hierarchy.
	www.okino.com /conv/pt4xsi6.htm (871 words)

	Chris Hecker and Jeff Lander's Game Technology Seminars: Graphics Schedule
		Geometry processing in games, on the other hand, lags far behind in sophistication, even though 3D hardware is advancing in both geometry throughput and geometry features at incredible rates.
		This intensive seminar examines the state of the art in geometry manipulation and processing, exploring both the mathematical side of the problem and the implementation side, on current and near-future 3D hardware.
		Doing signal processing on geometry is definitely going to be a big part of graphics technology going into the future, but sometimes you just want a mesh to look pretty on the screen and match your artist's intent.
	www.game-tech.com /gts2001/graphics.htm (2483 words)

	Freeform Shape Representations for Efficient Geometry Processing (Abstract) (Site not responding. Last check: 2007-10-12)
		The most important concepts for the handling and storage of freeform shapes in geometry processing applications are parametric representations and volumetric representations.
		While the algebraic complexity of volumetric representations is independent from the shape complexity, the domain of a parametric representation usually has to have the same structure as the surface itself (which sometimes makes it necessary to update the domain when the surface is modified).
		In this talk, a number of projects are presented and discussed in which such a combination leads to efficient and numerically stable algorithms for the solution of various geometry processing tasks.
	diglib.eg.org /EG/CGF/volume22/issue3/cgf_667.html (208 words)

	Applied Geometry Lab Publications
		Geometry at its most abstract is the study of symmetries and their associated invariants.
		Abstract: A fundamental problem in geometry processing is that of expressing a point inside a convex polyhedron as a combination of the vertices of the polyhedron.
		After extracting and smoothing the curvature tensor field of an input geometry, lines of minimum and maximum curvatures are used to determine adequate edges for the remeshed version in anisotropic regions, while spherical regions are simply point-sampled since there is no natural direction of symmetry locally.
	www.geometry.caltech.edu /pubs.html (7478 words)

	EVGA \| Community
		With the introduction of the GeForce 256 graphics processing unit, much of the computational load for this function was moved from the CPU to the GPU.
		The GeForce3 graphics processor is capable of processing these high order surfaces in hardware and in real time, essentially accepting these small, highly efficient formulas describing the geometry from the AGP bus, and then processing those formulas to “create” the geometry on the graphics processor.
		By representing complex geometry as a high-order surface and performing those surface calculations entirely on the GPU, GeForce3 is able to avoid transmitting tremendous amounts of triangle data across the AGP bus, ensuring that communication between the host and the GPU can continue in an efficient and high performance manner.
	www.evga.com /articles/public.asp?AID=43 (3220 words)

	GLOBE Claritas seismic data processing Seismic Geometry Definition
		The Claritas geometry application is used to control 2-D or 3-D seismic survey geometry information.
		Text files (containing the observers logs, navigation files or topographic survey) are input to the geometry application, which is used to create a geometry database, and wiggly line CDP gathers or 3-D bin definition.
		Geometry information may be applied to seismic data using the ADDGEOM processor module; the CDPSORT or DISCSORT modules may be used to effect a CDP-sort at any point in a seismic processing flow.
	www.gns.cri.nz /store/claritas/geometry.html (414 words)

	Gaël Guennebaud's Home Page (Site not responding. Last check: 2007-10-12)
		The point set is a flexible surface representation suitable for both geometry processing and real-time rendering.
		Thus, a smooth surface is reconstructed by combining the smoothing property produced by the rotational effect of sqrt(3)-like refinements with the points/normal interpolation of PN triangles.
		At each step the refined geometry is that from the previous step enriched by a new set of points.
	www.irit.fr /~Gael.Guennebaud/refinement.php (592 words)

	ResearchChannel - Meshes and Geometry Processing
		Progress in shape acquisition technology (laser scanners, etc.) has resulted in an abundance of large meshes representing highly detailed geometry.
		The acquired, densely sampled models are used in many application areas ranging from engineering design to entertainment and computational science.
		Processing of geometric information stored in such large meshes is the main theme of this talk.
	www.researchchannel.org /prog/displayevent.asp?rid=639 (69 words)

	Solid State Technology - A new definition of "fracturing"
		Flat processing is time-consuming and contributes to larger file sizes that can create a serious data bottleneck.
		The original, common flow is reconfigured to include the revised fracture definition, producing a new distribution that decouples the format requirements of the maskmaking equipment from geometry processing.
		While hierarchical processing can help the individual functions in a complex flow to perform faster, the whole flow should be considered with respect to data exchange, file handling, and storage.
	sst.pennnet.com /Articles/Article_Display.cfm?Section=ARTCL&ARTICLE_ID=201580&VERSION_NUM=1&p=5 (1082 words)

	Chapter 6. PostGIS Reference
		Returns a geometry that represents all points whose distance from this Geometry is less than or equal to distance.
		Returns the geometry in the OGC "well-known-binary" format, using the endian encoding of the server on which the database is running.
		When the input geometry is a collection or multi it will return a record for each of the collection components, and the path will express the position of the component inside the collection.
	postgis.refractions.net /docs/ch06.html (4778 words)

	BYTE.com
		Second, it separates the floating-point-intensive geometry processing from the rendering process, which uses high-performance integer calculations.
		This is explained by the fact that geometry processing works on a database of real numbers -- the 3-D coordinates that describe objects -- using matrix math.
		The second port is used differently, according to the type of board: On a renderer board it's unused; on a shader board it connects to eight banks of RAM used for storing texture maps; on a frame-buffer board it connects to the frame buffer itself.
	www.byte.com /art/9511/sec11/art1.htm (1529 words)

	10IMR short course
		Digital Geometry Processing Previous generations of multimedia progressed from univariate (sound), to bivariate (image), and trivariate (video) signals.
		Digital signal processing and itsassociated toolbox of fundamental algorithms made these multimedia datatypes easy and efficient to compute with enabling entire industries.
		Unstructured mesh generation of isoparametric elements from three-dimensional CAD geometry is a challenging problem because the CAD surfaces may have roughness, leading to uncertainty of how to place mesh nodes on the surface.
	www.imr.sandia.gov /10course.html (680 words)

	SGP 2006 - Fourth Symposium on Geometry Processing
		It was held on June 26 to 28, 2006 in Cagliari on the beautiful island Sardinia.
		The processing techniques are based on recent developments in applied mathematics, computer science, and engineering.
		The symposium followed the highly successful series of Symposia on Geometry Processing in Aachen (2003, Germany), in Nice (2004, France), and in Vienna (2005, Austria) and preceeds the Fifth Symposium that will be held in Barcelona (2007, Spain).
	sgp2006.sc.unica.it (182 words)

	[No title]
		The geometry processing stage of the traditional 3D pipeline has become the focus of current 3D graphics chip designs, as more detailed geometry promises a level of realism unattainable through increasingly complex textures.
		Introduction For conventional and advanced geometry processing, a programmable geometry engine gives the 3D Graphics IHV tremendous power and flexibility when: Deciding upon a feature set, a level of performance, and the corresponding architecture.
		For programmable geometry engines to gain widespread acceptance we must resolve the traditional conflict between high performance in the form of fixed function hardware and flexibility through programmable hardware.
	www.gamasutra.com /features/gdcarchive/2000/strauss.doc (2771 words)

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