Edit this text to create a Heading This subtitle is 20 points Bullets are blue They have 110% line spacing, 2 points before & after Longer bullets in the form of a paragraph are harder to read if there is insufficient line spacing. This is the maximum recommended number of lines per slide (seven). Sub bullets look like this This slide has a 16:9 media window Computational Plenoptic Imaging Wolfgang Heidrich University of British Columbia Gordon Wetzstein MIT Media Lab Ivo Ihrke Saarland University Douglas Lanman MIT Media Lab Ramesh Raskar MIT Media Lab Kurt Akeley Lytro, Inc.
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This slide has a 16:9 media windowComputational Plenoptic Imaging
Wolfgang HeidrichUniversity of British Columbia
Gordon WetzsteinMIT Media Lab
Ivo IhrkeSaarland University
Douglas LanmanMIT Media Lab
Ramesh RaskarMIT Media Lab
Kurt AkeleyLytro, Inc.
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HDR Imaging & Computed Tomography
Tomographic
HDR Reconstruction
wik
ipe
dia
[Ro
uf
et
al.
20
11]
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Lytro Light Field Camera
[Ng et al. 2005]
[Lytro, Inc.]
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Ultra-fast Imaging & Looking around Corners
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Instructors – Introduction & Overview
Gordon Wetzstein
Postdoctoral Researcher
MIT Media Lab
media.mit.edu/~gordonw
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Instructors – High Dynamic Range Imaging
Wolfgang Heidrich
Professor
University of British Columbia
cs.ubc.ca/~heidrich
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Instructors – Spectral Imaging
Ivo Ihrke
Research Group Leader
Saarland University
giana.mmci.uni-saarland.de/
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Instructors – Light Field Acquisition
Douglas Lanman
Research Scientist, Nvidia Research
Postdoctoral Researcher, MIT Media Lab
media.mit.edu/~dlanman
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Instructors – Inside the Lytro Camera
Kurt Akeley
Computer Graphics Pioneer & CTO at Lytro, Inc.
lytro.com/team/kurt_akeley
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Instructors – Ultra-fast Imaging
Ramesh Raskar
Associate Professor
MIT Media Lab
media.mit.edu/~raskar
cameraculture.media.mit.edu
TED Talk: Imaging at a Trillion FPS
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Introduction & Overview, Gordon (7 mins)
High Dynamic Range Imaging, Wolfgang (10 mins)
Spectral Imaging, Ivo (10 mins)
Light Field Acquisition, Douglas (10 mins)
Insight the Lytro Camera, Kurt (20 mins)
Imaging at a Trillion FPS, Ramesh (20 mins)
Schlieren Imaging, Gordon (5 mins)
Q & A, all (10 mins)
Course Outline
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The Mantis Shrimp
Up to 16 different photoreceptors: 12 for color (4 UV, visible, IR) 4 for polarization (linear & circular)
3 bands = trinocular vision
with each eye!
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Sensors Today
sensors are buckets collecting photons…
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Sensors Today
… disregarding color …
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Sensors Today
… direction …
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Sensors Today
… time of arrival …
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Sensors Today
… all photons are integrated.
Information loss!
++
Computational Photography
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Cameras are modeled as one Human Eye[W
illia
ms
91
]
webvision.med.utah.eduwikipedia.org
wikipedia.org
How would a camera look like if it was
modeled as a mantis shrimp eye?
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Visual Information Sampled
Human Visual System
Alla
n B
roo
ks,
EE
42
1,
20
03
Consumer Video Camera
4 Plenoptic parameterssampled (no Vx,y,z)
1920 x 1080 (HD)
3 – Color Filter Array
Continuous ~30 fps
1
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The Plenoptic Function
xVyV
High-dimensional, ray-based model for light Includes variations in space, time, angle, & wavelength
Common parameterizations
[Adelson and Bergen 91]
( , , , , , , )x y zP P t V V V
( , , , )x yP P V V plenoptic function
4D light field
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Computational Photograph & Plenoptic Imaging
Co-design of camera optics & computational processing