Digital Archive of Cultural Heritages- Three Dimensional Modeling of Cultural Heritages

and its use for Educational Purposes -

Atsushi Nakazawa, Takeshi Oishi, Jun Takamatsu, Kiminori Hasegawa, Katsushi Ikeuchi

IKEUCHI LaboratoryInstitute of Industrial Science, The University of Tokyo

http://www.cvl.iis.u-tokyo.ac.jp/

TAKEMURA LaboratoryCybermedia Center, Osaka Univesityhttp://www.ime.cmc.osaka-u.ac.jp/

Modeling from Reality

Real object

VR model

digital sensors

Algorithm

• Develop methods for acquiring accurate digital models of cultural heritage in all the world.

(University of Tokyo)

– Use for conservation and restoration.– Create computer graphics and open to the public

through a virtual museum on the Internet.

• Use the acquired digital data for education.(Osaka University)

– History, Art, Literature, Languages.

Digital Archive Project for Cultural Heritages

Visual Information of Cultural Properties

1. Geometry (Shape) 2. Photometry (Surface colors, Textures)

4. Time Sequence (Motion)3. Environment (Lighting Conditions, Shadows)

Research Issues• Geometry (Object Shape)

– Laser Range Sensors for 3D Modeling.

– Alignment and merging method for large amount of data.

– Digital restoration of original states.

• Time Sequence (Human Motion)– Video / Motion Capture

– Motion structure analysis and motion synthesis.

– Presentation by Humanoid Robots.

• Educational Applications– Distribute digital data for mobile environment.

– Mobile 3D displays.

Research Issues• Geometry (Object Shape)

– Laser Range Sensors for 3D Modeling.– Alignment and merging method for large amount of data.– Digital restoration of original states.

• Time Sequence (Human Motion)– Video / Motion Capture– Motion structure analysis and motion synthesis.– Presentation by Humanoid Robots.

• Educational Applications– Distribute digital data for mobile environment.– Mobile 3D displays.

• Digital Library– Three Dimensional Model of Cultural Heritages all the World.

Laser Range Scanners

time ⊿t

Scanner

distance d = ⊿t ・ c/2 c : light speed

Object

Scanned Range Images

Several range images acquired from different viewpoints.

Registration of Several Range Images

Merge the Aligned Range Images• Voxel based merging method by using PC Cluster

Complete 3D Digital Model of Large Scale Cultural Heritages

Ubiquitous Learning Projecthttp://www.ulan.jp/

Course Management SystemCourse Management System

Lecture

3D Model DataAccountingLecture Info..

VR Model

New Project by 3 Universities: Nagoya University, Information Tech. Center Kyoto University, Academic Center for Computing and Media Studies. Osaka University, Cybermedia Center

Direct Communication

DisplayHMD

Mobile Terminals

Conclusion

• The digital archiving technologies for cultural heritages:– 3D Geometry Modeling

– 3D Restoration Technique

– Applications for Educational Purposes

• Please visit the website:– Katsushi Ikeuchi Lab.

• http://www.cvl.iis.u-tokyo.ac.jp/

– ULAN (Ubiquitous Learning) Project

• http://www.ulan.jp/