virtual reality: stereoscopic imaging for educational institutions (slides)

ICBL2007 Conference

Antonio Amorim Antonio Amorim [email protected]@pad.lsi.usp.br

Grupo de Sistemas Pervasivos e de Alto Desempenho - Grupo de Sistemas Pervasivos e de Alto Desempenho - Laboratório de Sistemas Integráveis (LSI) – Universidade de Laboratório de Sistemas Integráveis (LSI) – Universidade de

São Paulo (USP) – São Paulo – SP – BrasilSão Paulo (USP) – São Paulo – SP – Brasil

Rodrigo ArnautRodrigo [email protected]@tvglobo.com.br

Laboratório de Técnicas Inteligentes (LTI) – Universidade de Laboratório de Técnicas Inteligentes (LTI) – Universidade de São Paulo (USP) – São Paulo – SP – BrasilSão Paulo (USP) – São Paulo – SP – Brasil

Virtual Reality: Stereoscopic Imaging for Educational Institutions

Virtual Reality: Stereoscopic Imaging Virtual Reality: Stereoscopic Imaging for Educational Institutionsfor Educational Institutions

AGENDAAGENDA• Introduction• Virtual Reality (Overview)

– Estereoscopy – Light Polarization Technic– Virtual Reality in Education

• Eletronic Whiteboard and VRML • 3D Video• Conclusion• References

• Low cost virtual reality systems construction

• Eletronic Whiteboard with VRML application

• 3D video production (Estereoscopy) for teaching

Virtual Reality in EducationINTRODUCTION

“No começo estranha, depois entranha!”

Fernando Pessoa

• Examples (real world): Transit Education, engineering, medicin, history: museum, churchs and laboratories of Simulation)

• Examples (virtual enviroment): 3D games and enviroment reconstruction with graphics computation

Virtual Reality in EducationINTRODUCTION

• Imersion, Interaction e Simulation Trinomy

• HMD – Head Mounted Devices

• Data Gloves,

• joysticks,

• Real size projections

• Rooms mounted with com projection screens

Virtual Reality in EducationOVERVIEW

• The HMD's are not so expensive, (US$1.000,00 a US$4.000,00)

• But for 50 students, the amount are

• A good cave maybe exceed US$ 1.000.000,00 (2004 prices)


• Technological advances and prices fall of:– processors, video cards and high capacity

storage– LCD Projectors (reduced sizes, low power

and bright enhancement)– Passive Technologies (Light Polarization)

• Glass at U$ 3,00


• Costs from US$10.000,00 to US$60.000,00

• Geowall Project

• AnatomI 3D Project

• VirtWall Project

• Prodigy 3D Project


• 2 different images– one to left eye and other to right eye– a few different angle (paralax)– 2,5’’ or 6,5 cm

• Technics: anaglifys, active stereo, Light Polarization (passive).

Virtual Reality in EducationSTEREOSCOPY

• 2 commons projectors – one to left eye images and other to right eye

images

• Light filters with opposite polarization

• Each eye see only a correct image

• Projection silver screen

Virtual Reality in EducationLIGHT POLARIZATION

3D projection aparatus withlight polarization


• 2 projectors cost: US$ 1000,00• silver screen: US$ 50,00• polarization filters US$ 25,00 • glass US$ 3,00• Suppose a minimal system to 50 users,

we need 2 projectors, one screen, 2 filters, and 50 Glasses– Total amount of investiment: US$1.250,00

(2004 prices)


• Several systems voltados para a Education • Cristine Youngblut produziu para o IDA[1]

– report com mais de 70 Projects aplicando RV na Education

• Specífic Public (children, high school students, adults, deficient students)– Didactic content (science, art) – Pedagogic Goals (improve the learning, reabilitation,

development of real life habilities)

[1] IDA: Institute for Defense Analyzes

Virtual Reality in EducationEDUCATION

Exibition of a anatomic estructure using the VirtWall platform

Virtual Reality in EducationEDUCATION

• 2 most utilized technologies – eletronic whiteboard (white board constructs

on a sensitive surface, on that maybe or not to be projected a screen of a computer, that captures a eletronic pen motion)

– Ultra-sonic device (fixed on a common white board transform it in a eletronic whiteboard) [Tori 2003].

Virtual Reality in EducationELETRONIC WHITEBOARD

Prodigy 3D Project Cietec / IPT / IPEN / USP

Virtual Reality in EducationELETRONIC WHITEBOARD

• to many research sources • Few detailed material• Almost all about tridimensional pictures• Few about 3D video• 3D video on market at "Low Cost“

– US$ 15,00 to US$ 100,00– R$ 15,00 to R$ 55,00 at Brasil

–Location/Sell on Internet • DVD Já – 11 titles (3D Glass included)

Virtual Reality in Education3D VIDEO

• Production: Transit Education• Case 1 – Estepe fácil (Easy spare wheel)

– Public: newbies drivers– Duration: 3 minutes– Cost of Production/Edition: R$ 1200,00

• Case 2 – Olhe pra frente (See on front)– Public:: Children “future drivers”– Duration: 2 minutes– Cost de Production/Edition: R$ 800,00


• 15 minutes of 3D video production– 2 hours for elaborare the script – 4 to 6 hours for record– 3 hours de ediction– The recording cost is R$ 800,00

• 250,00 leasing of 1 camera with ilumination• 100,00 leasing 3D lens• 300,00 diary de cinegrafist/film make staff• 150,00 material for scenary, diverse costs

– The ediction cost is R$ 400,00• 200,00 leasing of a portble ediction isle• 200,00 diary of editor/productor


• List of equipments used• Recording: • - Lens 3D (maker: NuView, Model: SX2000)• - Camera 8mm (maker: Sony Model: miniDV Hi8)• - AC extencions (plugs)• - 2 miniDV 8mm tapes• - BNC/RCA conection cable• - 2 batery for camera• ediction: • - Notebook with firewire interface • - Video ediction software: Adobe Premiere 6.0


– Caution to produce a 3D video• Detailed and good script• Correct frames• Sharp candidate objects to 3D point• Paralaxy distance adjust

Virtual Reality in EducationCONCLUSION

– The dissemination of RV is on a former moment associated to fall of equipments costs , that ocurrs year by year. Win the costs barrier, there are the cultural barrier, feeded by lacking of application and specific knowledge.

– The use of RV na Education is affected in same way. The equipments cost fall and alternative solutions like the 3D projection with polarized light mast be help and disseminate the RV at minor education institutions.


“There are not presential and distance learning conflicts, but there are a traditional teaching that refuses to incorporate new technologies and a flexible education that sums Information and Comunication Technologies (ICT) to add value for teachers and students”

Dia Nacional de EaD - 27 november/2006


[1] Youngblut, C. (1998). Educational uses of virtual reality technology. IDA Document D-2128. Institute for Defense Analyses, Alexandria, Virginia.

[2] NETTO, A.V., MACHADO, L.S., OLIVEIRA, M.C.F., “Virtual Reality: Definições, dispositivos e application”, ICMC-USP / POLI-USP, 2002.

[3] MINE, M., “Towards Virtual Reality for the Masses: 10 Years of Research at Disney’s VR Studio”, Walt Disney Internet Group, VR Studio, Glendale, USA, 2003.

Virtual Reality in EducationREFERENCES

[4] Romero Tori (2003) “O Virtual que marca Presença” , Associação Brasileira de Education a Distância – ABED, Revista Brasileira de Aprendizagem Aberta e a Distância

[5] “P3D Tecnologia da image” 2006, http://www.prodigy3d.com.br/

[6] Daniel C. Cliburn (2004) “Virtual Reality For Small Colleges” , Department of Mathematics and Computer Science of Hanover College, Hanover, Indiana, EUA.


[7] RASBAND, W. , "ImageJ - Image processing and analysis in Java”, National Institutes of Healt, EUA, disponível em http://rsb.info.nih.gov/ij/, visitado em 22/11/2006.

[8] Razor3D 2006, http://www.razor3donline.com/

[9] Dynamic Designer (2006) http://interactivephysics.design-simulation.com/DDM/index.php


[10] “ VR in the Schools” http://vr.coe.ecu.edu/pub.htm, East Carolina University Greenville, North Carolina USA

[11] Pape, D., Anstey, J., Dawe, G., A Low-Cost Projection Based Virtual Reality Display. The Engineering Reality of Virtual Reality 2002 SPIE Electronic Imaging: Science and Technology. San Jose, CA, 2002.


[12] Pair, J., Jensen, C., Flores, J., Wilson, J., Hodges, L., Gotz, D., The NAVE: Designand Implementation of a Non-Expensive Immersive Virtual Environment. SIGGRAPH 2002 Sketches and Applications, 2000.

[13] Belleman, R., Stolk, B., de Vries, R., Immersive Virtual Reality on Commodity Hardware. ASCI 2001.


[14] The GeoWall Consortium, http://geowall.geo.lsa.umich.edu/.

[15] Bruno S. Monteiro, Milane C.O. Valdek, Ícaro L. L. Cunha, Ronei M. Moraes, Liliane S. Machado (2006); AnatomI 3D: Um Atlas Digital Baseado em Virtual Reality para teaching de medicin. Anais do VIII SVR - Symposium on Virtual Reality. Março, Belém - PA – Brasil.


[16] Moraes, R. M.; Machado, L. S. e Souza, A.C.M. (2003); VirtWall: A Concept of Low-Coast Virtual Wall for Immersion in Virtual Reality, In: Proc of SVR, pp. 383-385.

[17] Moraes, R. M.; Machado, L. S. e Souza, A.C.M. (2003); VirtWall: A Concept of Low-Coast Virtual Wall for Immersion in Virtual Reality, In: Proc of SVR, pp. 383-385.


• Antonio Amorim • [email protected]• Grupo de Sistemas Pervasivos e de Alto Desempenho - Grupo de Sistemas Pervasivos e de Alto Desempenho - Laboratório de SistemasSistemas

Integráveis (LSI)– Universidade de São Paulo (USP) – São Paulo – SP – Brasil

• Rodrigo Arnaut• [email protected]• Laboratório de Técnicas Inteligentes (LTI)– Universidade de São

Paulo (USP) – São Paulo – SP – Brasil

Virtual Reality in EducationAUTHORS

ICBL2007 Conference