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See in 3D: how it works stereoscopic rendering Vincent Nozick - IGM - PowerPoint PPT Presentation

Sep 08, 2023 •426 likes •699 views

See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3D: how it works stereoscopic rendering Vincent Nozick - IGM / A3SI

  1. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3D: how it works stereoscopic rendering Vincent Nozick - IGM / A3SI Vincent Nozick - IGM / A3SI stereoscopic rendering 1 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 2 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3D Monocular clues • we have 2 eyes • we get two images that are similar but not identical • triangulation vanishing points, perspective Vincent Nozick - IGM / A3SI stereoscopic rendering 3 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 4 / 97

  2. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Monocular clues Monocular clues Occlusions (including participating medium) Lighting and shadow Vincent Nozick - IGM / A3SI stereoscopic rendering 5 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 6 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Monocular clues Monocular clues Eye accomodation Occlusions Vincent Nozick - IGM / A3SI stereoscopic rendering 7 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 8 / 97

  3. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Monocular clues Monocular clues Motion parallax Focus Vincent Nozick - IGM / A3SI stereoscopic rendering 9 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 10 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Monocular clues Monocular clues • perspective (vanishing points) • lighting and shadow • occlusions (participating medium ...) • eye focus • motion parallax • experience Experience and knowledge Vincent Nozick - IGM / A3SI stereoscopic rendering 11 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 12 / 97

  4. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic vision Stereoscopic vision To see in 3D, we need: • correct eyes • visual fields to cover each other • images fusion identical images : no 3D Vincent Nozick - IGM / A3SI stereoscopic rendering 13 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 14 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic vision Stereoscopic vision small shift superposition without fusion Vincent Nozick - IGM / A3SI stereoscopic rendering 15 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 16 / 97

  5. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic vision Restitution devices purpose: to provide to each eye the corresponding image. superposition then suppression Vincent Nozick - IGM / A3SI stereoscopic rendering 17 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 18 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Cross vision Parallel vision Vincent Nozick - IGM / A3SI stereoscopic rendering 19 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 20 / 97

  6. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Anaglyph Inficolor TriOviz Vincent Nozick - IGM / A3SI stereoscopic rendering 21 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 22 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Chromadepth Pulfrich Vincent Nozick - IGM / A3SI stereoscopic rendering 23 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 24 / 97

  7. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production S ingle I mage R andom D ot S tereogram SIRDS Vincent Nozick - IGM / A3SI stereoscopic rendering 25 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 26 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Visiocask Polarized glasses Also exists with circular polarisation Vincent Nozick - IGM / A3SI stereoscopic rendering 27 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 28 / 97

  8. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Obturators HMD synchronized with a high frequency display Head Mounted Display Vincent Nozick - IGM / A3SI stereoscopic rendering 29 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 30 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic displays Stereoscopic displays Vincent Nozick - IGM / A3SI stereoscopic rendering 31 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 32 / 97

  9. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic displays Ghost Failure in the 2 images separation: • crosstalk: screen latency (obturators, ...) • bad image filtering (anaglyphs, polarization, ..) Vincent Nozick - IGM / A3SI stereoscopic rendering 33 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 34 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Holograms Others Vincent Nozick - IGM / A3SI stereoscopic rendering 35 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 36 / 97

  10. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Others Others Vincent Nozick - IGM / A3SI stereoscopic rendering 37 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 38 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Parallax Horizontal positive parallax distance in pixel between 2 representations of the same object. ⇒ horizontal and vertical components. Vincent Nozick - IGM / A3SI stereoscopic rendering 39 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 40 / 97

  11. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Horizontal negative parallax Horizontal zero parallax Vincent Nozick - IGM / A3SI stereoscopic rendering 41 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 42 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Parallax angle Vertical parallax Optical axis: should be parallel? Vincent Nozick - IGM / A3SI stereoscopic rendering 43 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 44 / 97

  12. See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Vertical parallax Vertical parallax To avoid! Vincent Nozick - IGM / A3SI stereoscopic rendering 45 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 46 / 97 See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production See in 3d Devices stereoscopic images Orthostereoscopy Shooting Post-production Stereoscopic images and computer graphics Asymetric frustum Problem: how to generate a pair of stereoscopic images? Vincent Nozick - IGM / A3SI stereoscopic rendering 47 / 97 Vincent Nozick - IGM / A3SI stereoscopic rendering 48 / 97

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