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Comparison of perceptual color spaces for natural image segmentation tasks

机译:自然图像分割任务的感知色彩空间比较

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摘要

Color image segmentation largely depends on the color space chosen. Furthermore, spaces that show perceptual uniformity seem to outperform others due to their emulation of the human perception of color. We evaluate three perceptual color spaces, CIELAB, CIELUV, and RLAB, in order to determine their contribution to natural image segmentation and to identify the space that obtains the best results over a test set of images. The nonperceptual color space RGB is also included for reference purposes. In order to quantify the quality of resulting segmentations, an empirical discrepancy evaluation methodology is discussed. The Berkeley Segmentation Dataset and Benchmark is used in test series, and two approaches are taken to perform the experiments: supervised pixelwise classification using reference colors, and unsupervised clustering using Κ-means. A majority filter is used as a postprocessing stage, in order to determine its contribution to the result. Furthermore, a comparison of elapsed times taken by the required transformations is included. The main finding of our study is that the CIELUV color space outperforms the other color spaces in both discriminatory performance and computational Speed, for the average Case.
机译:彩色图像分割在很大程度上取决于所选的色彩空间。此外,由于它们模仿人类对颜色的感知,因此表现出感知一致性的空间似乎要优于其他空间。我们评估了三种感知色彩空间CIELAB,CIELUV和RLAB,以确定它们对自然图像分割的贡献,并确定在一组图像测试中获得最佳结果的空间。还包括非感知色彩空间RGB,以供参考。为了量化结果分割的质量,讨论了经验差异评估方法。在测试系列中使用了伯克利细分数据集和基准测试,并采取了两种方法来进行实验:使用参考色进行有监督的像素级分类,以及使用K均值进行无监督的聚类。多数过滤器用作后处理阶段,以确定其对结果的贡献。此外,还包括对所需转换所花费的经过时间的比较。我们研究的主要发现是,对于一般情况,CIELUV色彩空间在区分性能和计算速度上都优于其他色彩空间。

著录项

  • 来源
    《Optical engineering》 |2011年第11期|p.117203.1-117203.11|共11页
  • 作者单位

    Universidad de Guanajuato DICIS Carr. Salamanca-Valle de Santiago Km. 3.5+1.8 Comunidad de Palo Blanco Salamanca, Guanajuato 36885 Mexico;

    Universidad de Guanajuato DICIS Carr. Salamanca-Valle de Santiago Km. 3.5+1.8 Comunidad de Palo Blanco Salamanca, Guanajuato 36885 Mexico;

    Universidad de Guanajuato DICIS Carr. Salamanca-Valle de Santiago Km. 3.5+1.8 Comunidad de Palo Blanco Salamanca, Guanajuato 36885 Mexico;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    color image segmentation; segmentation evaluation; color space; selection;

    机译:彩色图像分割细分评估;色彩空间;选择;

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