Visualization Technology Basic
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Transcript of Visualization Technology Basic
Visualization TechnologyBasic
Masaki Hayashi
Nov.12, 2013Visualization of 3D CG
Lecture assigning
I will focus on the technical aspect of visualization.
• What, how and why is visualization? Steven Bachelder
• 3D CG basic and a tool usage Jonatan Österberg
• Technical issue of visualization Masaki Hayashi
Today’s lecture
Overview of visualization method
• Key issue of 3DCG visualization• Available technologies of visualization• Some show cases
(I will introduce the principles behind the technologies as much as possible)
Principle behind the technology
It is important to know the technical issue even if you are not a technical person.
TOOLInput Output
So that you can use the tool efficiently. Not to be cheated by a technician.
eg. Photoshop
Visualization
Very wide meaning
Creative visualizationFlow visualizationGeovisualizationIllustrationInformation graphicsvisual representations of informationInformation visualizationInteractive visualizationMusic visualizationScientific visualizationSoftware visualizationVisualization (computer graphics)
Visualization with 3DCG
To make a model Using CG tool (by Jonatan)
To digitize a real thing Digitization technique (by me)
1 Acquisition
Storage&
Network&
Computer
User interface
2 Representation
3 DisseminationDigitization, modeling
Display, Web
Three phases of visualization
Acquisition
• Filming Photograph
• Laser scanning Measurement by laser beam
• Photogrammetry Reconstruct geometry from multiple pictures
Filming
• Digital camera Resolution, White balance, Focal length, RAW data, Lighting
• Image scannerResolution, Color depth
• Panoramic image
Laser scanning
• Range: Small object, statue, ruin to city landscape
+ Aerial• Output: 3D point cloud x, y, z, + (i, r, g, b)• Multiple measurements:
Compensation of the shadow
IMView
ILRIS Intelligent Laser Ranging and Imaging Systems3m – 1000m (Optech)
Peru (landscape), Hampson museum (artifact)
Minolta-Konica Vivid 9iExample: ScanView (CMU)
Photogrammetry
• Digital camera Multiple filming and software reconstruction• Range:
Same as scanner• Output:
3D point cloud + color x, y, z, r, g, b
• Compensation of shadow
Example: PhotoScan (Agisoft)
Acute3D
Representation
Device: PC Monitor Screen projection Head-mounted display
Images: 2D picture 2D panoramic image 3D CG
Virtual Museum
Real spaceImmersive VRBig displayAR
Web serviceFloor map navigationPanorama walkthroughArt work viewing3DCG walkthrough
Immersive display
HMD (Head Mounted Display)
Classic
Latest
Immersive display
CAVE (Cave Automatic Virtual Environment)
Comes with head tracking, stereoscopy, wand, multiple loudspeakers
Immersive display
ImmersaDesk
Comes with head tracking, stereoscopy, wand, stereo sound
Big display
4K / 8K
4K LCD Monitor (Astrodesign)60-inch
8K PDP Monitor (Panasonic)145-inch
8K projector (NHK)
Big display
Multi-display
Curved screen with 3 projectors (22m x 6m)(Toppan)
Big display
Cleveland Museum (12m x 1.5m)23 times HDTV with touch panel
Multi-display
AR ( Augmented Reality )
AR information service Google glass
Real image + CG
AR ( Augmented Reality )
A board with marker
Real image + CG
CG is composited in real-time
Panoramic display
Google Art Project
PERISCOPE ( DNP )
Panoramic movie
Web service
360-degree image, floor plan navigation, information display
Louvre Virtual Tourshttp://musee.louvre.fr/visite-louvre/index.html?defaultView=rdc.s46.p01&lang=ENG
Web service
Panorama view, view point transition, information display
Smithsonian National Museum of Natural History
http://www.mnh.si.edu/vtp/1-desktop/
Web service
Google Art Project
Panorama view + view point transition(same technique used in Street View)
http://www.google.com/culturalinstitute/collection/van-gogh-museum?projectId=art-project&source=maps.sv
Web service
Google Art Project
Detail observation mode + related information
Web service
3DCG walkthrough
GRAPHTWERK
http://3dstellwerk.com/en/
( UNITY based 3D walkthrough )
Web service
http://www.3dancientwonders.com/index.php
3D Ancient Wonders (Shockwave Player, UNITY )
3DCG walkthrough
Web service
http://hampson.cast.uark.edu/
The Virtual Hampson Museum ( VRML, PDF, OBJ data )
3DCG object handing
Dissemination
There is not so many technical issueRather cultural issue
• Devices for users: PC, Tablet, Smartphone, etc.
• Ways of reaching: Web, Internet, Mobile, etc.
• User interactions: Keyboard, Touch screen, Voice control, Haptic device, etc.
Dissemination
Some keywords
Links Tagging Rating (likes) Keyword searching Personalization Community SNS
Example of social tagging(from Steve Project)
Dissemination
http://www.getty.edu/mygetty/The J. paul Getty Museum“My Getty” Bookmarks
Examples of virtual museum
http://www.culture.gouv.fr/documentation/joconde/fr/
JocondePortal collections of museums in France500,000 objects
Artefacts Canada 3,000,000 objects
http://www.pro.rcip-chin.gc.ca/artefact/index-eng.jsp
http://tagger.steve.museum/Steve Project“Steve tagger” social tagging