Depth from Texture Integration

Mark Sheinin, Yoav Y. Schechner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present a new approach for active ranging, which can be compounded with traditional methods such as active depth from defocus or off-axis structured illumination. The object is illuminated by an active textured pattern having high spatial-frequency content. The illumination texture varies in time while the object undergoes a focal sweep. Consequently, in a single exposure, the illumination textures are encoded as a function of the object depth. Per-object depth, a particular illumination texture, with its high spatial frequency content, is focused; the other textures, projected when the system is defocused, are blurred. Analysis of the time-integrated image decodes the depth map. The plurality of projected and sensed color channels enhances the performance of the process, as we demonstrate experimentally. Using a wide aperture and only one or two readout frames, the method is particularly useful for imaging that requires high sensitivity to weak signals and high spatial resolution. Using a focal sweep during an exposure, the imaging has a wide dynamic depth range while being fast.

Original languageEnglish
Title of host publication2019 IEEE International Conference on Computational Photography, ICCP 2019
ISBN (Electronic)9781728132631
DOIs
StatePublished - May 2019
Event2019 IEEE International Conference on Computational Photography, ICCP 2019 - Tokyo, Japan
Duration: 15 May 201917 May 2019

Publication series

Name2019 IEEE International Conference on Computational Photography, ICCP 2019

Conference

Conference2019 IEEE International Conference on Computational Photography, ICCP 2019
Country/TerritoryJapan
CityTokyo
Period15/05/1917/05/19

Keywords

  • active illumination
  • computational imaging
  • electrically tunable lens
  • focal sweep
  • three-dimensional shape recovery

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Instrumentation

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