| 图像颜色空间与其分量自相关研究 |
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| 引用本文： | 王鹏飞,金杨,刘真. 图像颜色空间与其分量自相关研究[J]. 中国印刷物资商情, 2011, 0(5): 34-39 |
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| 作者姓名： | 王鹏飞 金杨 刘真 |
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| 作者单位： | 北京印刷学院信息与机电工程学院; 北京102600; 北京印刷学院印刷与包装工程学院; 北京102600; 上海理工大学出版印刷与艺术设计学院; 上海200093 |
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| 摘 要： | 图像的自相关函数是表征空间域图像像素之间相关性的重要特性之一。在彩色图像所涉及的多种不同颜色空间下，颜色分量图像的自相关特性有所差异。为了获取彩色图像颜色空间与各分量图像自相关之间的关系，征RGB、KCH、LAB、OHTA和YCC5种颜色空间下，利用Matlab软件，对不同色彩特征的多幅彩色图像进行了分量自相关分析。结果表明：采用不同颜色空间的分量图像自相关水平各异；采用对立色空间（LAB／OHTA／YCC）分量图像的平均自相关水平高于采用RGB和LCH的分量图像；在对立色空间中，彩度分量的自相关水平明显高于其明度、亮度分量，由此使彩色图像的可压缩率得以提升。
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| 关 键 词： | 自相关函数 颜色空间 图像压缩 |
Study on Components of Color Space and their Auto-correlation of Image |
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| WANG Pengfei,JIN Yang,LIU Zhen. Study on Components of Color Space and their Auto-correlation of Image[J]. China Printing Materials Market, 2011, 0(5): 34-39 |
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| Authors: | WANG Pengfei JIN Yang LIU Zhen |
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| Affiliation: | 1. School of Information and Mechanical Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China ; 2. School of Printing and Packaging Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China; 3. College of Communication and Art Design, University of Shanghai for Science and Technology, Shanghai 200093, China ) |
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| Abstract: | Auto-correlation function is one of the important characteristics of image, which describes the correlation amongimage pixels. Under different color spaces used in color images, the component images show different auto-correlation characteristics. In order to obtain the relationship between color space and auto-correlation of component images, auto-correlation of component images under five different color spaces （RGB. LCH LAB OHTA and YCC） were analyzed. The autocorrelations were computed by Matlab software. The result showed that the auto-correlation level of component images is different under different color spaces, the auto-correlation level under LAB. OHTA and YCC spaces are higher than the level under RGB and LCH. In LAB, OHTA and YCC spaces, the level of color components is higher than the lightness/brightness components of color image, it can improve higher compression rate for color image |
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| Keywords: | Auto-correlation function Color space Image compression |
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