[20100820] 3d display, Haptics 기술 세미나

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  1. 1. Stereoscopic 2010. 08. 22
  2. 2. 2 Outline 3D vs. Stereoscopic vs. 2D ? Augmented Reality , Augmented Virtuality, Mixed Reality, Virtual Reality ? Haptic vs. Haptics , Tactile vs Haptics , Vibrotactile vs. tactile Stereoscopic Stereoscopy Human factor of Stereoscopic
  3. 3. 2D vs 3D 3D : 3D View, 3D Rendering . 2D 3D ? . [ 3D Game , VRML ] 3D 3D 3D . 3D . 3D View . 3D Rendering . 3 Which one is 3D ? 3D View 3D 2D 2D
  4. 4. 2D Graphics Pipeline Orthogonal . 2 Scaling, Rotation , Translation , Skew , Shear 2D Transformation 4
  5. 5. 3D Graphics Pipline , Transformation 5 2D Rendering pipelineViewing transformation Projection transformation Viewport Transformation Normalized Device cordinate to image cordinate
  6. 6. Stereoscopic Stereoscopy : Depth 3D Stereoscopy ? 3D Display 3D Stereoscopy . 3D Displays, Stereoscopic images, Stereoscopic displays 6
  7. 7. The Range of Mixed Reality Augmented Reality : a live direct or indirect view of a physical real-world environment whose elements areaugmented by virtual computer-generated imagery Augmented Virtuality : Real world objects into virtual worlds Virtual Reality : Computer-simulated environments that can simulate places in the real world as well as in imaginary worlds. 7 What is MR(Mixed Reality) ?
  8. 8. Haptic : Touch .Haptic : Touch . Haptesthai . Tactile Kinesthetic . (Tactile Sense + Kinesthetic Sense) + Kinesthetic sense ( ) Tactile sense ( ) Haptics .Haptics . human haptic sensory human motor characteristics , Haptic vs. Haptics ?
  9. 9. Haptic vs. Tactile vs VibrotactileHaptic vs. Tactile vs Vibrotactile Haptic Information : Tactile + Kinesthetic information Tactile Information : Spatial Tactile Information , Temporal Tactile Information Vibrotactile Information : Tactile Vibrotactile , Tactile Information Tactile Rendering vs. Vibrotactile Rendering Example of Interfaces E le c t r ic a l C o n n e c tio n P h a s e 1 ( + ) E le c t r ic a l C o n n e c tio n P h a s e 2 ( + ) G N D P h a s e 1 G N D P h a s e 2 E P A M F ilm O u tp u t D is c F r a m e Z DhON (Down)OFF (Up) Haptic Interface Tactile Interface Vibrotactile interface Electroactive Polymer Artificial Muscle
  10. 10. Haptics Haptics Research Human Haptics Machine Haptics Computer Haptics Device Design Sensor Communication Kinematics Kinesthetic Devices CyberForce ( Exoskeleton type) .. Haptic Glove .. Tactile Devices (Texture , Temperature, Vibrotactile.. ) Immersion Vibetonz BMW iDrive, Haptic Mouse .. Tactile and Kinesthetic Devices Surgery simulator 6Dof Phantom .. Neurophysiology Human Perception Psychophysical Experiments Usability Computer Graphics Collision Detection Haptic Rendering Algorithm Psychophysical Experiments Fechners 3 Methods Decision Model Applied Human Perception / Psychophysics Perceptual characterization Usability test Multimodal Integration , Haptic illusion Usability Graphics , Collision Detection 3D Model (Voxel Rendering,PBR, IBR..) Physics Simulation ( Elastic , Deformation..) Haptic Rendering Various Force Rendering Algorithm (Volume , Implicit, Texture, Friction..) Temperature, Vibrotactile Rendering Algorithm. Objective Performance - Effectiveness - Few errors - Learnability Affective Satisfaction - Subjective Satisfaction - Preference Human Haptics - Psychophysics - Physiology - Applied Human Perception
  11. 11. Psychopysics - .Psychopysics - . ? ? Physical Stimulus intensity Perceived stimulus magnitude ? ( [ex) Sound intensity loudness ] ) Neurophysiology Neurophysiology tactile stimuli ? stimuli ? ? Haptic perception . : . : Bias ( ) . , . Psychophysics + Neurophysiology
  12. 12. Stereoscopy Motion Parallax (Motion Parallax) ( , ) Linear Perspective , (Single vanishing point) 3D Rendering Perspective Projection . ( 6.5cm ) (binocular Disparity) (Divergence Distance) 4% . ( ) 12
  13. 13. Human factor of Stereoscopic 13 ( - ) , .
  14. 14. Human factor of Stereoscopic (Convergence) , . . (binocular disparity) . 14 1. Retinal disparity 2. Convergence angles - = ( 1 - 2 ) 3. Screen parallax 3. Screen parallax screen parallax p = | Pleft Pright|
  15. 15. Human factor of Stereoscopic - Convergence . . : : . 15
  16. 16. Human factor of Stereoscopic - Parallax Convergence , Divergence Disparity , Breaking Frame 16 Accommodataion < Convergence Accommodataion = Convergence Accommodataion > Convergence
  17. 17. Seeing Stereo Picture without H/W 17 Parallel-viewing Cross-viewing , . ( Vision Therapy)
  18. 18. Wiggle Stereoscopy Wiggle Stereoscopy , PikuPiKu No H/W required Gif Animation , Flash , Java Applet . [Crossed eyed / Parallel viewing ] ( ) , 18 PikuPiku - Wiggle Stereoscopy 2
  19. 19. Stereoscopic Display 19
  20. 20. Anaglyph filter ( ) 20 - ( TV ) - - - - . - . Channel R : 0 G : 0~255 B : 0 ~ 255 Channel R : 0 ~ 255 G : 0 B : 0 Left Image Right Image
  21. 21. Polarized filter 21 - ., . - .( ) - (TV ) - . - , ( ) ! - : LCD . .
  22. 22. Time-split display ( ) 22 - LCD - - ( ), , - - 3DTV . 120frame 240hz.
  23. 23. 3D 23 Dolby3D - . - - . ( ) - Master Image (Real D)
  24. 24. Autosteroscopy - Parallax Barrier 24 1903 F.E.Ives Barrier mask . , , . . ( , ) .
  25. 25. Autostereoscopy - Lenticular 25 Parallax barrier . 2 parallax barrier .
  26. 26. Autostereoscopy 3M Vikuiti 3d film 26 Sequential + Lenticular 2D / 3D . .
  27. 27. Autostereoscopy Integral Imaging , : 3D : 1908 . CCD, . 27
  28. 28. Volumeteric Display 28 - screen - , laser pulse display medium display . - 1200RPM screen . - laser beam voxel(volume pixel) . - display voxel laser beam . (Volumetric) : 2
  29. 29. Volumeteric Display 29
  30. 30. Hologram 3D . 30 : [ , ( = )] Reference Reference 3D . : ( ) . : , ( ) . 3
  31. 31. Stereoscopic Trend 31 Simulated 3D view from 2d photo 3D Converting iPhone Application Youtube in 3D AR Toolkit in Stereoscopic
  32. 32. Stereoscopic Trend 32 3D Head tracking with Stereoscopic Stereo Camera Depth extraction
  33. 33. References , - VC TDR (Haptic ) Webpage Vision3D - http://www.vision3d.com 3M Autostereoscopic Display using 3Ms 3D Filem PPT N. A. Dodgson, Autostereoscopic 3D displays,The IEEE Computer Society, Vol. 38, pp. 31-36, 2005. S. Schkolne, H. Ishii, P. Schroder, Immersive Design of DNA Molecules with a Tangible Interface,California Technology,2005. AR : Zenitum History of AR : Site Link 33