Hemispherical Confocal Imaging

• Tagawa Seiichi

  ISIR, Osaka University

• Mukaigawa Yasuhiro

  ISIR, Osaka University MIT Media Lab

• Kim Jaewon

  MIT Media Lab Korea Institute of Science and Technology (KIST)

• Raskar Ramesh

  MIT Media Lab

• Matsushita Yasuyuki

  Microsoft Research Asia

• Yagi Yasushi

  ISIR, Osaka University

抄録

We propose a new imaging method called hemispherical confocal imaging to visualize clearly a particular depth in a 3-D scene. The key optical component is a turtleback reflector which is a specially designed polyhedral mirror. To synthesize a hemispherical aperture, we combined the turtleback reflector with a coaxial camera and projector, to create on a hemisphere many virtual cameras and projectors with a uniform density. In such an optical device, high frequency illumination can be focused at a particular depth in the scene to visualize only that depth by employing descattering. The observed views are then factorized into masking, attenuation, reflected light, illuminance, and texture terms to enhance the visualization when obstacles are present. Experiments using a prototype system show that only a particular depth is effectively illuminated, and hazes caused by scattering and attenuation can be recovered even when obstacles are present.

収録刊行物

• Information and Media Technologies

  Information and Media Technologies 7 (1), 292-305, 2012

  Information and Media Technologies 編集運営会議

詳細情報

• CRID: 1390001205265522816
• NII論文ID: 130002073551
• DOI: 10.11185/imt.7.292
• ISSN: 18810896
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可