Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

doi:10.3788/COL201715.060901

Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

2017-01-01

5

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AI

M

Masato Fujiwara Masato Fujiwara

N

Naoki Takada Naoki Takada *

Shohei Ikawa Shohei Ikawa

and Tomoyoshi Ito and Tomoyoshi Ito

DOI：10.3788/COL201715.060901

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Abstract

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We propose a simple gradation representation method using a binary-weighted computer-generated hologram (CGH) to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional (3D) object are assigned to multiple bit planes according to their gray levels. The bit planes are sequentially displayed in a time-division-multiplexed manner. Consequently, the proposed method realizes a gradation representation of a reconstructed 3D object.

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Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

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