Tomoyoshi Shimobaba

Summary

Affiliation: Chiba University
Country: Japan

Publications

  1. pmc In-line digital holographic microscopy using a consumer scanner
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inege ku, Chiba 263 8522, Japan
    Sci Rep 3:2664. 2013
  2. ncbi request reprint Arbitrary shape surface Fresnel diffraction
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 20:9335-40. 2012
  3. doi request reprint Fast calculation of computer-generated-hologram on AMD HD5000 series GPU and OpenCL
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, Inage Ku, Chiba 263 8522, Japan
    Opt Express 18:9955-60. 2010
  4. doi request reprint Rapid calculation algorithm of Fresnel computer-generated-hologram using look-up table and wavefront-recording plane methods for three-dimensional display
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, Inage Ku, Chiba, Japan
    Opt Express 18:19504-9. 2010
  5. doi request reprint Numerical study of color holographic projection using space-division method
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:10287-92. 2011
  6. doi request reprint Band-limited double-step Fresnel diffraction and its application to computer-generated holograms
    Naohisa Okada
    Graduate School of Engineering, Chiba University, Chiba 263 8522, Japan
    Opt Express 21:9192-7. 2013
  7. doi request reprint One-unit system to reconstruct a 3-D movie at a video-rate via electroholography
    Yasuyuki Ichihashi
    Graduate School of Engineering, Chiba University, 1 33, Yayoi cho, Inage Ku, Chiba shi, Chiba 263 8522, Japan
    Opt Express 17:19691-7. 2009
  8. ncbi request reprint HORN-6 special-purpose clustered computing system for electroholography
    Yasuyuki Ichihashi
    1Graduate School of Engineering, Chiba University, Chiba shi, Chiba 263 8522, Japan twist
    Opt Express 17:13895-903. 2009
  9. doi request reprint Time-division color electroholography using one-chip RGB LED and synchronizing controller
    Minoru Oikawa
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:12008-13. 2011
  10. pmc Three-dimensional volume containing multiple two-dimensional information patterns
    Hirotaka Nakayama
    Graduate School of Engineering, Chiba University, Chiba, Japan
    Sci Rep 3:1931. 2013

Collaborators

Detail Information

Publications14

  1. pmc In-line digital holographic microscopy using a consumer scanner
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inege ku, Chiba 263 8522, Japan
    Sci Rep 3:2664. 2013
    ..In addition, to accelerate the reconstruction time of the gigapixel hologram and decrease the amount of memory for the reconstruction, we applied the band-limited double-step Fresnel diffraction to the reconstruction...
  2. ncbi request reprint Arbitrary shape surface Fresnel diffraction
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 20:9335-40. 2012
    ..However, the calculation cost of the proposed method is O(N log N) in one dimensional or O(N² log N) in two dimensional cases using non-uniform fast Fourier transform...
  3. doi request reprint Fast calculation of computer-generated-hologram on AMD HD5000 series GPU and OpenCL
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, Inage Ku, Chiba 263 8522, Japan
    Opt Express 18:9955-60. 2010
    ..The calculation speed realizes a speed approximately two times faster than that of a GPU made by NVIDIA...
  4. doi request reprint Rapid calculation algorithm of Fresnel computer-generated-hologram using look-up table and wavefront-recording plane methods for three-dimensional display
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, Inage Ku, Chiba, Japan
    Opt Express 18:19504-9. 2010
    ..We show optical reconstructions from a 2,048×2,048 phase-type CGH generated by about 3×10(4) object points over 10 frames per second...
  5. doi request reprint Numerical study of color holographic projection using space-division method
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:10287-92. 2011
    ....
  6. doi request reprint Band-limited double-step Fresnel diffraction and its application to computer-generated holograms
    Naohisa Okada
    Graduate School of Engineering, Chiba University, Chiba 263 8522, Japan
    Opt Express 21:9192-7. 2013
    ..As the application, we demonstrate a CGH generation with nearly 8K × 4K pixels from texture and depth maps of a three-dimensional scene captured by a depth camera...
  7. doi request reprint One-unit system to reconstruct a 3-D movie at a video-rate via electroholography
    Yasuyuki Ichihashi
    Graduate School of Engineering, Chiba University, 1 33, Yayoi cho, Inage Ku, Chiba shi, Chiba 263 8522, Japan
    Opt Express 17:19691-7. 2009
    ..In addition, we were able to control a three-dimensional image in real-time using our system...
  8. ncbi request reprint HORN-6 special-purpose clustered computing system for electroholography
    Yasuyuki Ichihashi
    1Graduate School of Engineering, Chiba University, Chiba shi, Chiba 263 8522, Japan twist
    Opt Express 17:13895-903. 2009
    ..The calculation speed is approximately 4,600 times faster than that of a personal computer with an Intel 3.4-GHz Pentium 4 CPU...
  9. doi request reprint Time-division color electroholography using one-chip RGB LED and synchronizing controller
    Minoru Oikawa
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 19:12008-13. 2011
    ..The one-chip LED allows us to decrease the development cost and to facilitate optical-axis alignment. Using this method, we observed a multi-color 3D reconstructed movie at a frame rate of 20 Hz...
  10. pmc Three-dimensional volume containing multiple two-dimensional information patterns
    Hirotaka Nakayama
    Graduate School of Engineering, Chiba University, Chiba, Japan
    Sci Rep 3:1931. 2013
    ..We also fabricated and demonstrated an actual prototype laser crystal from a glass cube engraved by a laser beam. This algorithm has applications in various fields, including media art, digital signage, and encryption technology...
  11. ncbi request reprint Generation of real-time large computer generated hologram using wavefront recording method
    Jiantong Weng
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Express 20:4018-23. 2012
    ..In other words, the improved method obtained a large CGH with about 6 mega pixels (1,980 × 1,080 × 3) from the object points at the video rate...
  12. doi request reprint Fast calculation of computer-generated hologram using the circular symmetry of zone plates
    Takashi Nishitsuji
    Graduate School of Engineering, Chiba University, Inage Ku, Chiba, Japan
    Opt Express 20:27496-502. 2012
    ..In this study, we propose a fast CGH generating algorithm using the circular symmetry of zone plates and computer graphics techniques. We evaluated the proposed method by numerical simulation...
  13. doi request reprint Scaled angular spectrum method
    Tomoyoshi Shimobaba
    Graduate School of Engineering, Chiba University, 1 33 Yayoi cho, Inage Ku, Chiba 263 8522, Japan
    Opt Lett 37:4128-30. 2012
    ..In this Letter, we propose a scaled ASM that calculates diffraction at different sampling rates on source and destination planes using the nonuniform fast Fourier transform...
  14. doi request reprint Quantitative assessment method for computer-generated holograms free from the effect of viewpoint
    Taichi Kiwaki
    Graduate School of Engineering, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8656, Japan
    Opt Lett 35:1112-4. 2010
    ..Moreover, the effect of location from which the 3D view is observed is ruled out from the result. This contributes to both economy of computation and conciseness of the result...