Fast Calculation of Color Gamut Boundary for LED Display Panel

SONG Chao; WANG Rui-guang; CHEN Yu; DENG Yi-cheng

doi:10.3788/fgxb20133407.0924

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Fast Calculation of Color Gamut Boundary for LED Display Panel

更新时间：2020-08-12

- Fast Calculation of Color Gamut Boundary for LED Display Panel
- Chinese Journal of Luminescence Vol. 34, Issue 7, Pages: 924-929(2013)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,130033
  2. 中国科学院大学, 北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133407.0924
  CLC： TN873
- Received：07 April 2013，
  
  Revised：06 May 2013，
  
  Published：10 July 2013
- 稿件说明：
移动端阅览
宋超, 王瑞光, 陈宇, 邓意成. LED显示屏色域边界的快速计算[J]. 发光学报, 2013,34(7): 924-929

SONG Chao, WANG Rui-guang, CHEN Yu, DENG Yi-cheng. Fast Calculation of Color Gamut Boundary for LED Display Panel[J]. Chinese Journal of Luminescence, 2013,34(7): 924-929
宋超, 王瑞光, 陈宇, 邓意成. LED显示屏色域边界的快速计算[J]. 发光学报, 2013,34(7): 924-929 DOI： 10.3788/fgxb20133407.0924.

SONG Chao, WANG Rui-guang, CHEN Yu, DENG Yi-cheng. Fast Calculation of Color Gamut Boundary for LED Display Panel[J]. Chinese Journal of Luminescence, 2013,34(7): 924-929 DOI： 10.3788/fgxb20133407.0924.

摘要

为了快速计算出LED显示屏的色域边界

提出一种迭代求解映射线与色域边界交点进而拟合每个色相面内色域边界的算法。首先根据LED显示的色度学原理给出了颜色是否在LED显示屏色域内的判断方法。然后在CIELAB均匀颜色空间中

分析了迭代算法的原理

确定了迭代计算初始值

并进行了计算精度和速度分析。最后以D65为参照

在等色相面内进行了LED显示屏色域边界的拟合实验及色差分析。实验结果表明:11次迭代运算后

拟合色域边界已非常光滑

每条映射线上的色域边界点真实值和计算值最大色差仅为0.23。与插值类计算方法相比

最大色差值和计算速度分别降低和提高了一个数量级。本文算法在计算精度和速度上能够满足对LED显示屏进行色域分析和与其他显示设备进行色域映射的要求。

Abstract

In order to fast acquire the gamut boundary of a LED display panel

an iterative method was proposed for the calculation of intersections between mapping lines and the gamut boundary

which was further used to get the fitting gamut boundary in each hue plane. Firstly

the judgment method if a color was in the LED display panel color gamut was supplied based on the colorimetric principles of LED display. And then

in the CIELAB uniform color space

it analyzed the iteration principle

determined the initial values for iteration

and carried out the analysis of calculation precision and speed. Finally

with D65 as reference

a LED display panel boundary fitting experiment and its color difference analysis were carried out in the same hue plane. Experiment result shows that the fitting boundary is very smooth after 11 iterations

and the maximum color difference between the true value and calculated value of the gamut boundary point on every mapping line is only 0.23. Compared with the interpolation methods

the maximum color difference is decreased and calculation speed is increased by an order of magnitude respectively. The method suggested could meet the needs of gamut analysis and gamut mapping with other display devices for the LED display panel in both the calculation precision and speed.

关键词

Keywords

references

Chang F, Sun Z Y, Wang R G, et al. Improvement of non-uniformity correction of LED display images[J]. Opt. Precision Eng.(光学精密工程), 2011, 19(4):929-937 (in Chinese).[2] Wang Y F, Zeng P, Wang Y, et al. Multi-channel printer characterization based on gamut partition[J]. Acta Electronica Sinica (电子学报), 2010, 38(3):507-511 (in Chinese).[3] Luo X M, Zeng P, Wang Y, et al. Color management using a hue-constancy color space[J]. Acta Electronica Sinica (电子学报), 2010, 38(11):2660-2668 (in Chinese).[4] Bakke A M, Farup I, Hardeberg J Y. Evaluation of algorithms for the determination of color gamut boundaries[J]. J. Imag. Sci. Technol., 2010, 54(5):50502-1-11.[5] Morovic J, Luo M R. Calculating medium and image gamut boundaries for gamut mapping[J]. Col. Res. Appl., 2000, 25(6):394-401.[6] Wang L. Design and application of intelligent led information display screen[J]. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2011, 26(5):655-659 (in Chinese).[7] Xu Y F, Liu W Y. Interpolation method for calculating gamut boundaries of digital imaging output devices[J]. Opt. Precision Eng.(光学精密工程), 2006, 14(2):262-265 (in Chinese).[8] Wang Y F, Liu R H, Zeng P. Extraction of printer gamut by the mixture of measurement and spline interpolation[J]. J. Huang-zhong Univ. Sci. Technol.(Nature Science Edition)(华中科技大学学报(自然科学版)), 2007, 35(7):15-17 (in Chinese).[9] Morovic J, Luo M R. The fundamentals of gamut mapping: A survey[J]. J Imag. Sci. Technol., 2001, 45(3): 283-290.[10] Mahy M. Calculation of color gamuts based on the neugebauer model[J]. Col. Res. Appl., 1997, 22(6):365-374.[11] Zhuang S X, Qian K Y, Li X L, et al. Effect of white LEDs on Gamut of TV with direct illumination-type LED backlight[J]. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2011, 26(4):474-479 (in Chinese).

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