“Visualizing Light Transport Phenomena with a Primal-Dual Coding Video Camera” by O’Toole and Kutulakos

  • ©

  • ©

Conference:


Type(s):


Entry Number: 26

Title:


    Visualizing Light Transport Phenomena with a Primal-Dual Coding Video Camera

Presenter(s):



Description:


    We present a primal-dual coding video camera, an optical device that captures video in which the flow of light through a scene has been manipulated. This camera has the ability to visualize indirect transport effects (caustics, inter-reflections, volumetric scattering, etc.), measure direct-only light paths (surface reflections), capture transport that occurs within specific regions of 3D space, and per- form structured light imaging in the presence of complex indirect effects. The operating principle behind this technology is to simul- taneously code the light that goes into a scene with the light that comes out. Specifically, over the course of a single camera expo- sure period, we project a sequence of light patterns onto the scene in lockstep with a second sequence of mask patterns that modu- lates the light incident on the camera sensor. This optical procedure creates RAW, unprocessed photos where a scene’s light transport function appears to have changed.

References:


    O’TOOLE, M., RASKAR, R., AND KUTULAKOS, K. N. 2012. Primal-dual coding to probe light transport. ACM Trans. Graph..

    O’TOOLE, M., MATHER, J., AND KUTULAKOS, K. N. 2014. 3d shape and indirect appearance by structured light transport. In Proc. CVPR.


Additional Images:

© ©

PDF:



ACM Digital Library Publication:



Overview Page: