Po-Hsiang Chen Advisor: Sheng-Jyh Wang

People  Shree K. Nayar  Ramesh Raskar  Ren Ng 2

Light Field 3 Levoy, M. (2006). "Light fields and computational imaging." Computer 39(8): D representation4D representation

Computational Photography  Extend the capabilities of digital photography 4

App: Light Field Rendering 5

App: Synthetic Aperture Photography 6

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App: Wave-front Coding 8 Object Lens CCD Wave-front Coding Optical Element 曾禎宇,” [090204]Wavefront_coding,” Vision Lab, NCTU Levin, A., R. Fergus, et al. (2007). "Image and depth from a conventional camera with a coded aperture." ACM Transactions on Graphics (TOG) 26(3): 70-es.

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What we are interesting in … 10

App: Dual Photography 11 standard photograph from camera dual photograph from projector Sen, P., B. Chen, et al. (2005). "Dual photography." ACM Transactions on Graphics (TOG) 24(3):

Helmholtz reciprocity 12 scene projector photosensor primal

Helmholtz reciprocity 13 projector photosensor projector photosensor scene light camera dual

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15 C’ shrinks to 1x1 scalar T shrinks to 1xpq vector Result Dual photo Scanning through the projector

Flying spot scanner 16

Adaptive Multiplexed Illumination 17

Scene relighting 18 Camera Array?

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App: Looking Around the Corner 20 Kirmani, A., T. Hutchison, et al. (2009). “Looking around the corner using transient imaging.” ICCV2009, CVPR2011

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Transient Light Transport  Scene S with M small planar P i  Z i defines the 3D position  D ij defines the distances between Ps 22

Space Time Impulse Response 23

Distance from STIR 24

Structure from Pairwise Distance  Isometric embedding 25 Dattorro, J. (2005). "Convex optimization & Euclidean distance geometry", Meboo Publishing USA.

Scenes with Occluders 26

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3D displays: Stereoscopic  Disparity 31

Anaglyph image 32

Polarized glasses 33

Shutter glasses 34

Glass-free: Parallax barrier 35

Glass-free: Holography 36 Schnars, U. and W. Jueptner (2005). "Digital holography", Springer.

37 Slinger, C., C. Cameron, et al. (2005). "Computer-generated holography as a generic display technology." Computer 38(8):

App: Layered 3D 38 Wetzstein, G., D. Lanman, et al. (2011). “Layered 3D: tomographic image synthesis for attenuation-based light field and high dynamic range displays,” ACM, Siggraph 2011.

Tomographic Image Synthesis 39

40 Prototype multi-layer display

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