Active one-shot scan for wide depth range using a light field projector based on coded aperture

It is possible that our method using the video projector with coded aperture can accurately recover objects for wide depth range from a single captured image. In general, depth ranges are limited because blur increases rapidly of the video projector. In contrast, since our system is designed not to defocus, depth range is significantly broadened.

Optical configuration.

Actual optical system.(Setup with a short baseline)
Coded aperture installed on the projector lens.



The difference from conventional systems is the coded aperture placed over the projector lens to realize a light field projection, and we can generate depth-dependent patterns without blurring out the high-frequency features in addition, active stereo technique has important feature.





Publications
  • Hiroshi Kawasaki, Satoshi Ono, Yuki, Horita, Yuki Shiba, Ryo Furukawa, Shinsaku Hiura,
    "Active one-shot scan for wide depth range using a light field projector based on coded aperture"
    International Conference on Computer Vision (ICCV), 9, 12.2015
  • Hiroshi Kawasaki, Satoshi Ono, Yuki Horita, Shinsaku Hiura, Ryo Furukawa,
    Patent Application JP 2015-103366(PCT),
  • Hiroshi Kawasaki, Yuuki Horita, Hiroki Morinaga, Yuuki Matugano, Satoshi Ono, Makoto Kimura, Yasuo Takane, "STRUCTURED LIGHT WITH CODED APERTURE FOR WIDE RANGE 3D MEASUREMENT"
    IEEE International Conference on Image Processing (ICIP), pp.2777-2780, 9.2012,
Kawasaki Laboratory