Calculation reduction method for color digital holography and computer-generated hologram using color space conversion

被引：13

作者：

Shimobaba, Tomoyoshi ^{[1
]}

Nagahama, Yuki ^{[1
]}

Kakue, Takashi ^{[1
]}

Takada, Naoki ^{[2
]}

Okada, Naohisa ^{[1
]}

Endo, Yutaka ^{[1
]}

Hirayama, Ryuji ^{[1
]}

Hiyama, Daisuke ^{[1
]}

Ito, Tomoyoshi ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Engn, Inage Ku, Chiba 2638522, Japan

[2] Kochi Univ, Fac Sci, Kochi 7808520, Japan

来源：

OPTICAL ENGINEERING | 2014年 / 53卷 / 02期

基金：

日本学术振兴会;

关键词：

computer-generated hologram; digital holography; color holography; color space conversion; YCbCr color space; LIQUID-CRYSTAL DISPLAY; REFERENCE LIGHTS; ELECTROHOLOGRAPHY; RECONSTRUCTION; SYSTEM;

D O I：

10.1117/1.OE.53.2.024108

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A calculation reduction method for color digital holography (DH) and computer-generated holograms (CGHs) using color space conversion is reported. Color DH and color CGHs are generally calculated on RGB space. We calculate color DH and CGHs in other color spaces for accelerating the calculation (e. g., YCbCr color space). In YCbCr color space, a RGB image or RGB hologram is converted to the luminance component (Y), blue-difference chroma (Cb), and red-difference chroma (Cr) components. In terms of the human eye, although the negligible difference of the luminance component is well recognized, the difference of the other components is not. In this method, the luminance component is normal sampled and the chroma components are down-sampled. The down-sampling allows us to accelerate the calculation of the color DH and CGHs. We compute diffraction calculations from the components, and then we convert the diffracted results in YCbCr color space to RGB color space. The proposed method, which is possible to accelerate the calculations up to a factor of 3 in theory, accelerates the calculation over two times faster than the ones in RGB color space. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：6

共 24 条

[1]

[Anonymous], J I TELEV ENG JPN

[2]

[Anonymous], 2009, P SPIE

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