(Jack) John Erwin Tumblin Research Interests: Education: Teaching Experience

Total Page:16

File Type:pdf, Size:1020Kb

(Jack) John Erwin Tumblin Research Interests: Education: Teaching Experience (Jack) John Erwin Tumblin Program of Computer Graphics Cornell University 580 Frank H. T. Rhodes Hall Cornell University Ithaca, NY 14853-3801 Phone: (607) 255–6714 FAX:(607) 255–0806 E-Mail: [email protected] URL: www.graphics.cornell.edu/ jet ∼ U. S. Citizen Research Interests: Human visual perception of intensity, movement, form and color; computer graphics, visual appearance, surface modeling, computational geometry, image-based rendering, image processing, and computer vision. Education: December 1999 Georgia Institute of Technology. Doctor of Philosophy in Computer Science. Disserta- tion Topic: Three Methods of Detail-Preserving Contrast Reduction for Displayed Images. Thesis advisor: Greg Turk. December 1990 Georgia Institute of Technology. Master of Science in Electrical Engineering. Minor in mathematics, GPA 3.7/4.0, earned from part-time studies during full-time employment at IVEX Corp. Emphasized digital signal processing, Fourier optics, and computer graphics. Independent studies led to one published paper. January 1980– University of Southern California. Study towards Master of Fine Arts in Cinema. January 1981 Made several student films, including work on Ken Kwapis’ “For Heavens Sake,” which won 1982 Academy Award-Student Division. Left for KTLA-TV job offer. September 1978 Georgia Institute of Technology. Bachelor of Science (Electrical Engineering). Eta Kappa Nu and Briaerean Society (EE scholastic honoraries); music director at WREK-FM radio, Co-op student at Georgia Tech Research Institute. Music studies at Georgia State University led to U.S. Patent #4,321,853. Teaching Experience: Fall 2000 Guest Lecturer, CS517 Advanced Computer Graphics, Cornell University, graduate level. Instructor: Dr. Philip Dutr´e. Fall 1999 Guest Lecturer, Arch476.6 Advanced Computer Graphics, Cornell University, graduate level. Instructor: Dr. Philip Dutr´e. Fall 1999 Guest Lecturer, NSF/STC Televideo Seminar Series. Five universities (Brown, Cornell, Utah, California Institute of Technology, and UNC-Chapel Hill) linked by interactive video for collaborative teaching and research discussions. Winter 1997 Teaching Assistant, CS7321 Computer Vision, Georgia Tech, graduate level. Instructor: Dr. Irfan Essa. (Jack) John Erwin Tumblin Page 2 of 5 Professional Recognition: 2000–2001 Guest Editor, IEEE Computer Graphics and Applications, “Applied Perception” special issue to be published September, 2001. 1993–Present Reviewer, ACM Transactions on Graphics, ACM SIGGRAPH conference papers, ACM SIGGRAPH technical sketches, IEEE Transactions on Visualization and Computer Graph- ics, IEEE Computer Graphics and Applications, Computer Graphics Forum (Eurograph- ics), Eurographics Workshop on Rendering, Graphics Interface (Annual Conference), ACM Symposium on Interactive 3D Graphics. Also reviewed thesis work at Cornell by Dan Kartch (Ph.D) and Hector Yee (M.S.) at their advisors’ requests. Employment History 1999–Present Post-Doctoral Associate, Program of Computer Graphics, Cornell University. Research on perceptually guided animation and rendering, and new image representations. 1997–1999 Graduate Research Assistant, GVU Center, Georgia Institute of Technology. Conducted research on adaptation models and diffusion. 1996–1997 Consultant, IVEX Corporation, Atlanta, GA. System design/lead engineer on Aero- Vision product, a new Level-C FAA-certifiable computer graphics image generator for flight simulation. Working prototype was demonstrated to customers in June 1997. 1994-1995 Research Intern, Microsoft Corporation. Graphics Research Group, Redmond, WA. Performed investigations towards dissertation work, designed and tested several mathemat- ical models of local adaptation in the human visual system. 1991–1994 Graduate Research Assistant, Scientific Visualization Group, Georgia Institute of Technology. Prepared and presented instructional seminars, helped researchers view their data graphically, and helped develop the ‘GlyphMaker’ visualization software package. 1983–1991 Research Engineer, IVEX Corporation, Atlanta, GA. System design and lead engineer for a series of computer image generator products for commercial and military pilot training. Awarded U.S. Patents #4,752,836, #4,807,158, and #4,873,585 during the course of this work. My work on IVEX-sponsored consulting for Scientific-Atlanta Inc. was awarded U.S. Patents #4,924,498 and #5,142,575. 1982–1983 Consultant, Peerless Instrument Co., Los Angeles, CA. customization of broadcast electronics equipment, including electronic reticles, high-frame-rate TV systems, and early design studies for IVEX Corp. 1980–1982 Television Engineer, KTLA-TV5 Los Angeles, CA. Repair and maintenance of video broadcast, recording and editing equipment. I also designed and built a microcomputer- based diagnostic system. 1978–1980 Research Engineer I, Georgia Tech Research Institute. Helped design a high-speed synthetic image generator to test optically guided missiles and countermeasures. (Jack) John Erwin Tumblin Page 3 of 5 Publications: Reprints available electronically from www.graphics.cornell.edu/ jet/publications.html ∼ Refereed Journal Papers: Tumblin, J., Hodgins, J. K., Guenter, B., “Two Methods for Display of High Contrast Images.”ACM Transac- tions on Graphics, Vol. 18, No. 1, pp. 56–94, January 1999. (Topic survey, layered illumination compression method, and interactive foveal display program method). The previous issue’s cover image is from our paper. Hodgins, J. K., O’Brien, J. F., Tumblin, J., “Perception of Human Motion with Different Geometric Mod- els.”IEEE Transactions on Visualization and Computer Graphics, Vol. 4, No. 4, pp. 307–316, October– December 1998. (New experimental results and analysis of work first reported in Graphics Interface ‘97 paper below). Guenter, B., Tumblin, J., “Quadrature Prefiltering for High Quality Antialiasing.” ACM Transactions on Graphics, Vol. 15, No. 4, pp. 332–353, October 1996. (Fast analytic antialiasing with arbitrary filter kernels). Tumblin, J., Rushmeier, H. E., “Tone Reproduction for Computer Generated Images.” IEEE Computer Graphics and Applications, Vol. 13, No. 6, pp. 42–48, November 1993. Extended earlier versions available as GT-GVU Technical Reports #91-13 and #92-32. (Advocates perceptually valid display images, offers a framework for computing them). Ideas and images from this work are reproduced in several textbooks, including Cohen & Wallace’s Radiosity & Realistic Image Synthesis (1994), Sillion & Puech’s Radiosity & Global Illumination (1994), and Glassner’s Principles of Digital Image Synthesis (1995). Refereed Conference Papers: Pattanaik, S., Tumblin, J., Yee, H., Greenberg, D., “Time-Dependent Visual Adaptation for Fast, Realistic Image Display.” In SIGGRAPH 2000 Conference Proceedings, Annual Conference Series, pages 47–54. ACM SIGGRAPH, New Orleans, Louisiana, 23–28 July 2000. (Eye adjustments for high contrast movies). Tumblin, J., Turk, G., “Low Curvature Image Simplifiers (LCIS): A Boundary Hierarchy for Detail-Preserving Contrast Reduction.” In SIGGRAPH ‘99 Conference Proceedings, Annual Conference Series, pages 83– 90. ACM SIGGRAPH, Los Angeles, California, 8–13 August 1999 (Anisotropic diffusion variant preserves shadow and highlight details in very high contrast imagery). Annual Proceedings frontispiece image was taken from this paper. Hodgins, J. K., O’Brien, J. F., Tumblin, J. E., “Do Geometric Models Affect Judgments of Human Mo- tion?” The Proceedings of Graphics Interface ‘97, pages 17–25. Kelowna, B.C., Canada, May 21–23, 1997. (Psychophysical tests of motion discrimination in human figure rendering). Tumblin, J., “Matching Pilot Perceptions of Real-World and Simulated Light Sources.” In Proceedings of the Flight Simulation Technologies Conference, pp. 117–130. American Institute of Aeronautics & Astronautics (AIAA), September 1988. Atlanta, GA. (Model of airport lighting perception). (Jack) John Erwin Tumblin Page 4 of 5 Miscellaneous: Tumblin, J., Hodgins, J. K., Guenter, B. K., “Display of High Contrast Images using Models of Visual Adaptation.” Technical sketch in Visual Proceedings of SIGGRAPH ‘97, page 154. ACM SIGGRAPH, Los Angeles, California, 3–8 August 1997. Watkins, C., Sadun, A., Marenka, S., I contributed Chapter 7, “Advanced Geometric Transformations,” in book Modern Image Processing, pages 97–108, M&T Publishers, 1993. (An introductory text for computer hobbyists). Book cover image taken from this work. Tumblin, J., Guenter, B., High Quality Image Warp Filters on Image Pyramids. Georgia Tech GVU Center Technical Report #93–04, 1993. (High detail, low-loss directional filtering for extreme image distortions), from sponsored research work for E-Systems Corporation. Ribarsky, W. R.,Tumblin, J., Newton, G., Nowicki, R., Vetter, J., Glyphmaker: An Interactive, Programmer- less Approach for Customizing Visual Data Representations. Georgia Tech GVU Center Technical Report #93–26, 1993. (Object-oriented data-flow toolkit for data visualization). Patents: U.S. Patent #4,807,158 “Method and Apparatus for Sampling Images to Simulate Movement within a Multi- dimensional Space.” Primary patent for IVEX VDS-1000 series visual systems for flight simulation, filed 1987, issued February 21, 1989. U.S. Patent #4,873,585 “Method of Selectively Retrieving Video Images From a Video Reproducer for Simulating Movement.” Secondary patent for IVEX 3D fractal mountain flying video game, filed 1985, issued October 10, 1989. U.S. Patent #4,752,836 “Method and Apparatus for Reproducing Video Images to Simulate Movement within a Multidimensional
Recommended publications
  • The Lumigraph
    The Lumigraph The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Gortler, Steven J., Radek Grzeszczuk, Richard Szeliski, and Michael F. Cohen. 1996. The Lumigraph. Proceedings of the 23rd annual conference on computer graphics and interactive techniques (SIGGRAPH 1996), August 4-9, 1996, New Orleans, Louisiana, ed. SIGGRAPH, Holly Rushmeier, and Theresa Marie Rhyne, 43-54. Computer graphics annual conference series. New York, N.Y.: Association for Computing Machinery. Published Version http://dx.doi.org/10.1145/237170.237200 Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:2634291 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA e umigra !"#$#% &' ()*"+#* ,-.#/ (*0#10203/ ,425-*. !0#+41/4 6425-#+ 7' 8)5#% 642*)1)9" ,#1#-*25 strat 1#*4#1 )9 2-;"3*#. #%$4*)%=#%" =-;1 -++)< - 31#* ") look around - 12#%# 9*)= "K#. ;)4%"1 4% 1;-2#' U%# 2-% -+1) !4; "5*)3>5 .499#*? :541 ;-;#* .412311#1 - %#< =#"5). 9)* 2-;"3*4%> "5# 2)=;+#"# -;? #%" $4#<1 )9 -% )@B#2" ") 2*#-"# "5# 4++314)% )9 - MG =).#+' 85#% -%. ;#-*-%2#)9 @)"5 1A%"5#"42 -%. *#-+ <)*+. )@B#2"1 -%. 12#%#1C *#;*#1? I4++4-=1 QVS -%. I#*%#* #" -+ QMWS 5-$# 4%$#1"4>-"#. 1=))"5 4%"#*? #%"4%> "541 4%9)*=-"4)%C -%. "5#% 314%> "541 *#;*#1#%"-"4)% ") *#%.#* ;)+-"4)% @#"<##% 4=->#1 @A =).#+4%> "5# =)"4)% )9 ;4K#+1 X4'#'C "5# 4=->#1 )9 "5# )@B#2" 9*)= %#< 2-=#*- ;)14"4)%1' D%+4/# "5# 15-;# optical !owY -1 )%# =)$#1 9*)= )%# 2-=#*- ;)14"4)% ") -%)"5#*' E% 2-;"3*# ;*)2#11 "*-.4"4)%-++A 31#.
    [Show full text]
  • F I N a L P R O G R a M 1998
    1998 FINAL PROGRAM October 18 • October 23, 1998 Sheraton Imperial Hotel Research Triangle Park, NC THE INSTITUTE OF ELECTRICAL IEEE IEEE VISUALIZATION 1998 & ELECTRONICS ENGINEERS, INC. COMPUTER IEEE SOCIETY Sponsored by IEEE Computer Society Technical Committee on Computer Graphics In Cooperation with ACM/SIGGRAPH Sessions include Real-time Volume Rendering, Terrain Visualization, Flow Visualization, Surfaces & Level-of-Detail Techniques, Feature Detection & Visualization, Medical Visualization, Multi-Dimensional Visualization, Flow & Streamlines, Isosurface Extraction, Information Visualization, 3D Modeling & Visualization, Multi-Source Data Analysis Challenges, Interactive Visualization/VR/Animation, Terrain & Large Data Visualization, Isosurface & Volume Rendering, Simplification, Marine Data Visualization, Tensor/Flow, Key Problems & Thorny Issues, Image-based Techniques and Volume Analysis, Engineering & Design, Texturing and Rendering, Art & Visualization Get complete, up-to-date listings of program information from URL: http://www.erc.msstate.edu/vis98 http://davinci.informatik.uni-kl.de/Vis98 Volvis URL: http://www.erc.msstate.edu/volvis98 InfoVis URL: http://www.erc.msstate.edu/infovis98 or contact: Theresa-Marie Rhyne, Lockheed Martin/U.S. EPA Sci Vis Center, 919-541-0207, [email protected] Robert Moorhead, Mississippi State University, 601-325-2850, [email protected] Direct Vehicle Loading Access S Dock Salon Salon Sheraton Imperial VII VI Imperial Convention Center HOTEL & CONVENTION CENTER Convention Center Phones
    [Show full text]
  • COURSE NOTES 8 CASE STUDY: Scanning Michelangelo's Florentine Pieta`
    SIGGRAPH 99 26th International Conference on Computer Graphics and Interactive Techniques COURSE NOTES 8 CASE STUDY: Scanning Michelangelo's Florentine Pieta` Sunday, August 9, 1999 Two Hour Tutorial ORGANIZER Holly Rushmeier IBM TJ Watson Research Center LECTURERS Fausto Bernardini Joshua Mittleman Holly Rushmeier IBM TJ Watson Research Center 1-1 ABSTRACT We describe a recent project to create a 3D digital model of Michelangelo's Florentine Pieta`. The emphasis is on the practical issues such as equipment selection and modi®cation, the planning of data acquisition, dealing with the constraints of the museum environment, overcoming problems encountered with "real" rather than idealized data, and presenting the model in a form that is suitable for the art historian who is the end user. Art historian Jack Wasserman, working with IBM, initiated a project to create a digital model of Michelangelo's Florentine Pieta` to assist in a scholarly study. In the course of the project, we encountered many practical problems related to the size and topology of the work, and with completing the project within constraints of time, budget and the access allowed by the museum. While we have and will continue to publish papers on the individual new methods we have developed in the in course of solving various problems, a typical technical paper or presentation does not allow for the discussion of many important practical issues. We expect this course to be of interest to practitioners interested in acquiring digital models for computer graphics applications, end users who are interested in understanding what quality can be expected from acquired models, and researchers interested in ®nding research opportunities in the "gaps" in current acquisition methods.
    [Show full text]
  • IBM Research Report Reverse Engineering Methods for Digital
    RC23991 (W0606-132) June 28, 2006 Computer Science IBM Research Report Reverse Engineering Methods for Digital Restoration Applications Ioana Boier-Martin IBM Research Division Thomas J. Watson Research Center P.O. Box 704 Yorktown Heights, NY 10598 Holly Rushmeier Yale University New Haven, CT Research Division Almaden - Austin - Beijing - Haifa - India - T. J. Watson - Tokyo - Zurich LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. I thas been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g ,. payment of royalties). Copies may be requested from IBM T. J. Watson Research Center , P. O. Box 218, Yorktown Heights, NY 10598 USA (email: [email protected]). Some reports are available on the internet at http://domino.watson.ibm.com/library/CyberDig.nsf/home . Reverse Engineering Methods for Digital Restoration Applications Ioana Boier-Martin Holly Rushmeier IBM T. J. Watson Research Center Yale University Hawthorne, New York, USA New Haven, Connecticut, USA [email protected] [email protected] Abstract In this paper we focus on the demands of restoring dig- ital objects for cultural heritage applications. However, the In this paper we discuss the challenges of processing methods we present are relevant to many other areas. and converting 3D scanned data to representations suit- This is a revised and extended version of our previous pa- able for interactive manipulation in the context of virtual per [12].
    [Show full text]
  • The 2019 Visualization Career Award Thomas Ertl
    The 2019 Visualization Career Award Thomas Ertl The 2019 Visualization Career Award goes to Thomas Ertl. Thomas Ertl is a Professor of Computer Science at the University of Stuttgart where he founded the Institute for Visualization and Interactive Systems (VIS) and the Visualization Research Center (VISUS). He received a MSc Thomas Ertl in Computer Science from the University of Colorado at University of Stuttgart Boulder and a PhD in Theoretical Astrophysics from the Award Recipient 2019 University of Tuebingen. After a few years as postdoc and cofounder of a Tuebingen based IT company, he moved to the University of Erlangen as a Professor of Computer Graphics and Visualization. He served the University of Thomas Ertl has had the privilege to collaborate with Stuttgart in various administrative roles including Dean excellent students, doctoral and postdoctoral researchers, of Computer Science and Electrical Engineering and Vice and with many colleagues around the world and he has President for Research and Advanced Graduate Education. always attributed the success of his group to working with Currently, he is the Spokesperson of the Cluster of them. He has advised more than fifty PhD researchers and Excellence Data-Integrated Simulation Science and Director hosted numerous postdoctoral researchers. More than ten of the Stuttgart Center for Simulation Science. of them are now holding professorships, others moved to His research interests include visualization, computer prestigious academic or industrial positions. He also has graphics, and human computer interaction in general with numerous ties to industry and he actively pursues research a focus on volume rendering, flow and particle visualization, on innovative visualization applications for the physical and hierarchical and adaptive algorithms for large datasets, par- life sciences and various engineering domains as well as in allel and hardware accelerated visual computing systems, the digital humanities.
    [Show full text]
  • Yale University Department of Computer Science
    Yale University Department of Computer Science A Psychophysical Study of Dominant Texture Detection Jianye Lu Alexandra Garr-Schultz Julie Dorsey Holly Rushmeier YALEU/DCS/TR-1417 June 2009 Contents 1 Introduction 4 2 Psychophysical Studies and Computer Graphics 5 2.1 Diffusion Distance Manifolds . 5 2.2 PsychophysicalExperiments. 5 2.3 Psychophysics Applications in Graphics . 7 3 Experimental Method 8 4 Subject Response Analysis 12 4.1 AnalysiswithANOVA . 12 4.2 AnalysiswithMDS........................ 12 4.3 AnalysiswithScaling. 17 5 Texture Features 20 6 Conclusion 24 A Collection of Psychophysical Studies in Graphics 25 1 List of Figures 1 Dominant texture and texture synthesis . 4 2 Decision tree for psychophysical experiment selection . ... 7 3 Textures for psychophysical experiment . 9 4 User interface for psychophysical experiment . 10 5 Technique preferences based on ANOVA . 13 6 Technique significance with respect to individual texture . 14 7 Technique significance with respect to individual participant . 15 8 Participants on a 2-D MDS configuration . 16 9 Texture samples on 2-D MDS configuration . 18 10 Pairedcomparisonscaling . 19 11 PC-scalesfortestingtextures . 20 12 Textures on PC-scale-based 2-D MDS configuration . 21 13 Spearman’s correlation between texture descriptors and PC- scales ............................... 23 List of Tables 1 Linear correlation between paired comparison scales . 20 2 Qualitative correlation between texture descriptors and PC- scales ............................... 24 2 A Psychophysical Study of Dominant Texture Detection∗ Jianye Lu, Alexandra Garr-Schultz, Julie Dorsey, and Holly Rushmeier Abstract Images of everyday scenes are frequently used as input for texturing 3D models in computer graphics. Such images include both the texture desired and other extraneous information.
    [Show full text]
  • Tone Reproduction for Interactive Walkthroughs
    EUROGRAPHICS ’2000 / M. Gross and F.R.A. Hopgood Volume 19, (2000), Number 3 (Guest Editors) Tone Reproduction for Interactive Walkthroughs A. Scheel, M. Stamminger, H.-P. Seidel Max-Planck-Institute for Computer Science, Saarbrücken, Germany Abstract When a rendering algorithm has created a pixel array of radiance values the task of producing an image is not yet completed. In fact, to visualize the result the radiance values still have to be mapped to luminances, which can be reproduced by the used display. This step is performed with the help of tone reproduction operators. These tools have mainly been applied to still images, but of course they are just as necessary for walkthrough applications, in which several images are created per second. In this paper we illuminate the physiological aspects of tone reproduction for interactive applications. It is shown how tone reproduction can also be introduced into interactive radiosity viewers, where the tone reproduction continuously adjusts to the current view of the user. The overall performance is decreased only moderately, still allowing walkthroughs of large scenes. 1. Introduction of real world luminances visible by the human eye (about 6 ¤ 8 2 5 ¥ 10 £ 10 cd m ) by far exceeds the dynamic range of Physically based rendering can be split into three phases. ¤ 2 the monitor (about 1 120 cd ¥ m ). First a model of the virtual world has to be created. This includes the geometry of the scene, the surface reflectance To achieve their goal, most tone reproduction operators behavior, and the emission characteristics of light sources. mimic the functioning of the visual system (or at least some Second, a simulation of light exchange is performed within aspects of it).
    [Show full text]
  • EG MAM 2019 Eurographics 2019 Workshop on Material Appearance Modeling
    EG MAM 2019 Eurographics 2019 Workshop on Material Appearance Modeling Strasbourg, France 9 July 2019 Held in conjunction with The 30th Eurographics Symposium on Rendering Workshop Co-Chairs Reinhard Klein, University of Bonn Holly Rushmeier, Yale University Proceedings Production Editor Dieter Fellner (TU Darmstadt & Fraunhofer IGD, Germany) Sponsored by EUROGRAPHICS Association DOI: 10.2312/mam.20192022 https://www.eg.org https://diglib.eg.org Dieter W. Fellner, Werner Hansmann, Werner Purgathofer, François Sillion Series Editors This work is subject to copyright. All rights reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. Copyright c 2019 by the Eurographics Association Postfach 2926, 38629 Goslar, Germany Published by the Eurographics Association –Postfach 2926, 38629 Goslar, Germany– in cooperation with Institute of Computer Graphics & Knowledge Visualization at Graz University of Technology and Fraunhofer IGD (Fraunhofer Institute for Computer Graphics Research), Darmstadt ISBN 978-3-03868-080-2 ISSN 2309-5059 The electronic version of the proceedings is available from the Eurographics Digital Library at https://diglib.eg.org Table of Contents Table of Contents. .iii Preface...............................................................................................iv AuthorIndex..........................................................................................v
    [Show full text]
  • A Tool for Shared Analysis and Video Dissemination 18 ZEYU WANG, WEIQI SHI, KIRAZ AKOGLU, ELENI KOTOULA, YING YANG, and HOLLY RUSHMEIER, Yale University
    CHER-Ob: A Tool for Shared Analysis and Video Dissemination 18 ZEYU WANG, WEIQI SHI, KIRAZ AKOGLU, ELENI KOTOULA, YING YANG, and HOLLY RUSHMEIER, Yale University The study of cultural heritage involves many diferent activities, including visualizing digital data, analyzing information, and sharing results. Current technologies focus on providing better tools for data representation and processing, neglecting the importance of analysis and sharing. In this article, we present a software system, CHER-Ob, which ofers powerful tools for evaluating and publishing the results of cultural heritage research. CHER-Ob provides the capability to visualize and add various types of annotations to data in a wide variety of formats. These annotations assist in the analysis phase and are used for sharing the results of a study. A written report can be generated and automatically illustrated using the annotations. In addition, an “animation scheme” is associated with each type of annotation. The schemes make it possible to generate an introductory video overview of an analysis by selecting preferences and annotations. A series of animated sequences of 2D and 3D objects will appear in a user-specifed order in a video subtitled by annotations. The system is useful for integrating cultural and digital resources as well as for providing a method to author materials for disseminating cultural heritage fndings to the public. CCS Concepts: • Computing methodologies → Graphics systems and interfaces; Additional Key Words and Phrases: Cultural heritage, video generator ACM Reference format: Zeyu Wang, Weiqi Shi, Kiraz Akoglu, Eleni Kotoula, Ying Yang, and Holly Rushmeier. 2018. CHER-Ob: A Tool for Shared Analysis and Video Dissemination.
    [Show full text]
  • Optical Models for Direct Volume Rendering
    Optical Models for Direct Volume Rendering Nelson Max University of California, Davis, and Lawrence Livermore National Laboratory Abstract This tutorial survey paper reviews several different models for light interaction with volume densities of absorbing, glowing, reflecting, and/or scattering material. They are, in order of increasing realism, absorption only, emission only, emission and absorption combined, single scattering of external illumination without shadows, single scattering with shadows, and multiple scattering. For each model I give the physical assumptions, describe the applications for which it is appropriate, derive the differential or integral equations for light transport, present calculations methods for solving them, and show output images for a data set representing a cloud. Special attention is given to calculation methods for the multiple scattering model. 1. Introduction A scalar function on a 3D volume can be visualized in a number of ways, for example by color contours on a 2D slice, or by a polygonal approximation to a contour surface. Direct volume rendering refers to techniques which produce a projected image directly from the volume data, without intermediate constructs such as contour surface polygons. These techniques require some model of how the data volume generates, reflects, scatters, or occludes light. This paper presents a sequence of such optical models with increasing degrees of physical realism, which can bring out different features of the data. In many applications the data is sampled on a rectilinear grid, for example, the computational grid from a finite difference simulation, or the grid at which data are reconstructed from X-ray tomography or X-ray crystallography. In other applications, the samples may be irregular, as in finite element or free lagrangian simulations, or with unevenly sampled geological or meteorolog- ical quantities.
    [Show full text]
  • Multiresolution Distance Volumes for Progressive Surface Compression
    Preprint UCRL-JC-146852 Multiresolution Distance Volumes for Progressive Surface Compression D. A. Laney, M. Bertram, M. A. Duchaineau, N. L. Max This article was submitted to 1st International Symposium on 3D Data Processing Visualization and Transmission, Padova, Italy, June 19-21, 2002 January 14, 2002 U.S. Department of Energy Lawrence Livermore National Laboratory Approved for public release; further dissemination unlimited DISCLAIMER This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. This is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the understanding that it will not be cited or reproduced without the permission of the author. This work was performed under the auspices of the United States Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No.
    [Show full text]
  • T5.Pdf (5.173Mb)
    Eurographics 2010 Tutorial Advanced Material Appearance Modeling Julie Dorsey Holly Rushmeier Yale University { julie.dorsey, holly.rushmeier (at) yale.edu} 1 Table of Contents Tutorial Description………………………………3 Annotated Slides…………………………………6 Bibliography……………………………………127 2 Tutorial Description For many years appearance models in computer graphics focused on general models for reflectance functions coupled with texture maps. Recently it has been recognized that even very common materials such as hair, skin, fabric, and rusting metal require more sophisticated models to appear realistic. We will begin by briefly reviewing basic reflectance models and the use of texture maps. We then describe common themes in advanced material models that include combining the effects of layers, groups of particles and/or fibers. We will survey the detailed models necessary needed to model materials such as skin (including pigmentation, pores, subsurface scattering), plants (including internal structure) and automotive paints (including color flop and sparkle). We will then treat the modeling of complex appearance due to aging and weathering processes. A general taxonomy of effects will be presented, as well as methods to simulate and to capture these effects. We close with a summary of current trends in material appearance research and a discussion of existing and needed resources. Prerequisites Knowledge of basic rendering and reflectance functions. Syllabus/Approximate Schedule Introduction: 10 min. Background: 15 min. Specialized Material Models: Comm on Themes: 20 min Natural Materials: 20 min. Manufactured/Processed Materials: 20 min. Aging and Weathering Processes: Taxonom y: 10 min. Sim ulation: 20 min. Capture Approaches: 20 min. Current Trends and Needs 45 min. 3 Speakers Julie Dorsey is a Professor of Computer Science at Yale University, where she teaches computer graphics.
    [Show full text]