Open AccessFull-color computer-generated hologram using wavelet transform and color space conversion
Author(s) -
Shota Yamada,
Tomoyoshi Shimobaba,
Takashi Kakue,
Tomoyoshi Ito
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.008153
Subject(s) - rgb color model , color space , ycbcr , wavelet transform , artificial intelligence , rgb color space , computer vision , wavelet , color histogram , computer science , superposition principle , optics , holography , color image , mathematics , physics , image processing , image (mathematics) , mathematical analysis
In this study, we presented the acceleration of full-color computer-generated holograms (CGHs) bi using WAvelet ShrinkAge-Based superpositIon (WASABI). The WASABI method uses a wavelet transform. Furthermore, the light wave superposition is calculated by using 3%, 5%, and 10% of the light wave components in wavelet space. The WASABI method is implemented for generating full-color CGHs and is used to further combine the color space conversion from the RGB color space to the YCbCr color space. We report that the WASABI method is 10-33 times faster than the conventional look-up table method and 2-7 times faster than the depth layer method based on fast Fourier transform. Further, the WASABI method in the YCbCr color space is approximately 1.5 times faster than that in the RGB color space.