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Calculating Saliency Using the Dihedral Group D_4

机译：使用二面体组D_4计算显着性

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摘要

A salient image region is a part of the scene that stands out relative to neighboring regions. By that we mean that a human observer would experience a salient region as being more prominent. It is, however, important to quantify saliency in terms of a mathematical quantity that lends itself to measurements. Different metrics have been shown to correlate with human fixation data. These include contrast, brightness, and orienting gradients calculated at different image scales. In this paper, we show that saliency can be measured by the transformations pertaining to the dihedral group D_4, which is the symmetry group of the square image grid. Our results show that salient features can be defined as the image features that are most asymmetric in their surroundings.
机译：显着图像区域是场景的一部分，相对于相邻区域突出。我们的意思是说，人类观察者将经历一个更加突出的显着区域。然而，重要的是根据可用于测量的数学量来量化显着性。已经显示出不同的指标与人类注视数据相关。这些包括在不同图像比例下计算出的对比度，亮度和方向梯度。在本文中，我们表明显着性可以通过与二面体组D_4有关的转换来测量，二面体组D_4是正方形图像网格的对称组。我们的结果表明，可以将显着特征定义为周围环境中最不对称的图像特征。

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  • 来源
    《Journal of Imaging Science and Technology》 |2014年第1期|010504.1-010504.12|共12页
  • 作者

    Ali Alsam; Puneet Sharma; Anette Wralsen;

  • 作者单位

    Department of Informatics & e-Learning (AITeL), Sor-Trondelag University College (HiST), Trondheim, Norway;

    Department of Informatics & e-Learning (AITeL), Sor-Trondelag University College (HiST), Trondheim, Norway;

    Department of Informatics & e-Learning (AITeL), Sor-Trondelag University College (HiST), Trondheim, Norway;

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