| IPT颜色空间均匀性的研究 |
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| 引用本文： | 李文育,张二虎,郭凌华.IPT颜色空间均匀性的研究[J].西北轻工业学院学报,2013(4):15-19. |
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| 作者姓名： | 李文育 张二虎 郭凌华 |
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| 作者单位： | [1]陕西科技大学轻工与能源学院,陕西西安710021 [2]西安理工大学印刷包装工程学院,陕西西安710048 |
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| 基金项目： | 陕西省教育厅科研计划项目（2013JK1162）;国家级大学生创新创业训练计划项目（201210708001）;陕西科技大学博士科研启动基金项目（BJl3-01） |
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| 摘 要： | 针对当前图像色貌模型中使用的IPT颜色空间,采用视觉均匀的Munsell颜色体系,分别从明度、彩度和色相等三方面对其均匀性进行了评价,提出了样品决定系数(R2)、均方根误差(RMSE)等相应的评价指标.结果表明:在明度方面,IPT颜色空间与CIELAB颜色空间同样具有良好的均匀性;在彩度方面,IPT颜色空间的彩度均匀性不如CIELAB颜色空间;在色相方面,R、YR、Y、GY、G、BG、B颜色区域的均匀性要比在CIELAB颜色空间稍好一些,是一个较为理想的色彩空间.
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| 关 键 词： | 颜色空间 均匀性 IPT CIELAB Munsell颜色体系 |
Research on the uniformity of the IPT color space |
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| LI Wen-yu,ZHANG Er-hu,Guo Ling-hua.Research on the uniformity of the IPT color space[J].Journal of Northwest University of Light Industry,2013(4):15-19. |
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| Authors: | LI Wen-yu ZHANG Er-hu Guo Ling-hua |
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| Affiliation: | 1. College of Light Industry and Energy, Shaanxi University of Science ＆ Technology, Xi＇an 710021, China 2. Faculty of Printing and Packaging Engineering, Xi＇an University of Technology, Xi＇an 710048, China) |
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| Abstract: | The uniformity is an important aspect for evaluating the quality of a color space and has an important impact on the accuracy of the effect evaluation of gamut mapping, color difference and color reproduction. For the IPT color space that current image color appear- ance model uses, the uniformity of IPT is evaluated by lightness, chroma and hue using the Munsell Color System. The sample coefficient of determination （R2）, the root-mean-square error （RMSE） and other appropriate indicators are given. The result shows that IPT and CIELAB have a similar result aspect of lightness; in chroma, the IPT color space is poor than CIELAB color space;but in hue, the IPT is better, especially from YR to BG. The IPT color space is the better one. |
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| Keywords: | color space uniformity IPT CIELAB the Munsell Color System |
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