24 February 2017 Gradation representation method using binary-weighted computer-generated hologram
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We propose a simple gradation representation method for a reconstructed three-dimensional (3-D) image without controlling the brightness of the reference light. In the proposed method, we use multiple bit planes comprised of binary-weighted computer-generated holograms (CGHs) with various light transmittances. Binary-weighted CGH is generated by changing the white in the conventional binary CGH to gray. The light transmittance of a binary-weighted CGH is less than that of a conventional binary CGH. The object points of a 3-D object are assigned to multiple bit planes according to the gray level of the object points. The multiple bit planes are displayed sequentially in a time-division multiplex manner. Consequently, the proposed method realizes a gradation representation of a reconstructed 3-D object.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Masato Fujiwara, Masato Fujiwara, Naoki Takada, Naoki Takada, Hiromitsu Araki, Hiromitsu Araki, Shohei Ikawa, Shohei Ikawa, Hiroaki Niwase, Hiroaki Niwase, Yuki Maeda, Yuki Maeda, Hirotaka Nakayama, Hirotaka Nakayama, Takashi Kakue, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Shimobaba, Tomoyoshi Ito, Tomoyoshi Ito, } "Gradation representation method using binary-weighted computer-generated hologram," Optical Engineering 56(2), 023105 (24 February 2017). https://doi.org/10.1117/1.OE.56.2.023105 . Submission: Received: 6 December 2016; Accepted: 6 February 2017
Received: 6 December 2016; Accepted: 6 February 2017; Published: 24 February 2017


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