Chinese Optics Letters, Vol. 16, Issue 8, 080901 (2018)
Color representation method using RGB color binary-weighted computer-generated holograms
Masato Fujiwara1, Naoki Takada2,*, Hiromitsu Araki1, Shohei Ikawa3, Yuki Maeda1, Hiroaki Niwase1, Minoru Oikawa2, Takashi Kakue4, Tomoyoshi Shimobaba4, and Tomoyoshi Ito4
- 1Graduate School of Integrated Arts and Sciences, Kochi University, Kochi 780-8520, Japan
- 2Science Department, Natural Sciences Cluster, Research and Education Faculty, Kochi University, Kochi 780-8520, Japan
- 3Faculty of Science, Kochi University, Kochi 780-8520, Japan
- 4Graduate School of Engineering, Chiba University, Chiba 263-8522, Japan
We propose a method for color electroholography using a simple red–green–blue (RGB) gradation representation method without controlling the respective brightness of the reference RGB-colored lights. The proposed method uses RGB multiple bit planes comprising RGB binary-weighted computer-generated holograms with various light transmittances. The object points of a given three-dimensional (3D) object are assigned to RGB multiple bit planes according to their RGB gradation levels. The RGB multiple bit planes are sequentially displayed in a time-division-multiplexed manner. Consequently, the proposed method yields a color gradation representation of a reconstructed 3D object.