丁桂芝,王晓红.不同环境下移动终端显示色光谱特性研究[J].包装工程,2015,36(7):123-128,133.
DING Gui-zhi,WANG Xiao-hong.Spectral Characteristics of Mobile Terminal Displayed Color under Different Ambient Illuminants[J].Packaging Engineering,2015,36(7):123-128,133. |
| 不同环境下移动终端显示色光谱特性研究 |
| Spectral Characteristics of Mobile Terminal Displayed Color under Different Ambient Illuminants |
| 投稿时间：2014-09-11 修订日期：2015-04-10 |
| DOI： |
| 中文关键词: 移动终端 光谱值关系模型 环境 光谱叠加性 显示色 |
| 英文关键词: mobile terminal spectrum switching model environment spectrum superposition displayed color |
| 基金项目:上海市研究生创新基金 （JWCXSL1302） |
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| 中文摘要: |
| 目的 分析不同环境下移动终端显示器显示色的光谱特性， 研究外界环境对移动终端颜色显示的影响。方法 分别在暗室和D50光源下测量移动终端显示色的光谱值， 利用高斯-马尔科夫线性回归， 改进显示色与三原色之间的光谱叠加模型， 并根据显示色光谱函数之间存在的线性叠加关系， 建立同一显示色在2种环境下的光谱关系模型。结果 外界环境对同一显示色的光谱值影响显著， 但不影响各通道独立性， 2种环境下移动终端都具备良好的通道独立性。模型预测值与实测值之间的光谱均方误差和DE 2000色差的结果表明， 改进后的线性叠加模型较原模型的光谱计算精度提高了6倍，色差降低到0.1以下； 同一显示色在2种环境下光谱关系模型的光谱预测值与实测值非常接近， 色差均值小于1。结论 改进后的光谱叠加模型更精确地量化了移动终端的颜色显示特征， 并且光谱转换模型的建立， 可以有效去除环境对移动终端颜色显示的影响， 为研究移动终端显示图像效果的增强提供了方法。 |
| 英文摘要: |
| Spectral characteristics of the displayed color of the mobile terminal were analyzed in different environments, to study the influence of ambient environment on the LCD display of the mobile terminal. The spectral radiance curves of the displayed colors of the mobile terminal LCD display were measured in darkroom and under D50 illuminant, respectively. The spectral superposition model between displayed color and the three primary colors was improved based on Gauss - Markov linear regression. Then a conversion model of display color spectral radiance under two different environmental conditions was established on the basis of the linear superposition of color spectral radiance functions. The results showed that the ambient environment had an obvious influence on the spectral radiance of the same displayed color, but there was no influence on the independence of the channels. In both environments, the mobile terminal had good channel independence. The spectral mean square error and CIEDE2000 color difference between the model predicted values and measured values showed that the spectral radiance calculation accuracy of the improved linear superposition model was enhanced by 6 folds as compared to that of the original model, and the mean color difference was reduced to less than 0.1 NBS. The predicted values of the spectral model and the measured values of the same displayed color were very close in the two different environments, with a mean color difference of less than 1 NBS. The improved spectral superposition model quantified the color display characteristics of the mobile terminal more accurately, and the establishment of the spectral transfer model could effectively remove the influence of ambient environment on the color display of the mobile terminal, which provided method for the enhancement of image display of the mobile terminal. |
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