摘要
图像复制过程中不同的再现意图对应着不同的色域映射方法,本文通过使用分光光度计的色度测量并借助于MATLAB的凸壳函数计算出ICC标准的四种再现意图下的色域体积,同时采用视觉评价方法对图像输出质量进行评价。数据分析与视觉评价的结果表明了再现意图对于数字印刷图像质量的影响,也表明了色度评价在图像质量评价方面的不足。实验结果对于阐释再现意图、色域体积和图像质量三者之间的关系和对印刷图像质量的科学评价具有参考意义。
The different rendering intents are corresponding to the different gamut mapping methods in digital printing. Based on the results obtained by spectrophotometer measurements, the gamut volumes of ICC standard rendering intents were calculated with the Convhulln function in MATLAB. At the same time the visual evaluations were adopted to decide the output image quality. The data analysis in relation to the results of visual evaluations shows the difference influence of the rending intents to digital image quality and the insufficient of using chroma to decide the image quality. The results can be significant for explaining the relationships of gamut volume, rendering intent and the image quality in digital printing and for the scientific evaluation to image quality.
关键词
再现意图
数字印刷
图像质量
rending intent
digital printing
image quality
