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Ultra-Shallow DoF Imaging Using Faced Paraboloidal Mirrors

  • Ryoichiro NishiEmail author
  • Takahito Aoto
  • Norihiko Kawai
  • Tomokazu Sato
  • Yasuhiro Mukaigawa
  • Naokazu Yokoya
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10113)

Abstract

We propose a new imaging method that achieves an ultra-shallow depth of field (DoF) to clearly visualize a particular depth in a 3-D scene. The key optical device consists of a pair of faced paraboloidal mirrors with holes around their vertexes. In the device, a lens-less image sensor is set at one side of their holes and an object is set at the opposite side. The characteristic of the device is that the shape of the point spread function varies depending on both the positions of the target 3-D point and the image sensor. By leveraging this characteristic, we reconstruct a clear image for a particular depth by solving a linear system involving position-dependent point spread functions. In experiments, we demonstrate the effectiveness of the proposed method using both simulation and an actually developed prototype imaging system.

Keywords

Target Object Point Spread Function Numerical Aperture Image Sensor Point Light Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work was supported by JSPS Grant-in-Aid for Research Activity Start-up Grant Number 16H06982.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Ryoichiro Nishi
    • 1
    Email author
  • Takahito Aoto
    • 1
  • Norihiko Kawai
    • 1
  • Tomokazu Sato
    • 1
  • Yasuhiro Mukaigawa
    • 1
  • Naokazu Yokoya
    • 1
  1. 1.Graduate School of Information ScienceNara Institute of Science and TechnologyIkomaJapan

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