Perceptual Evaluation of Color‐to‐Grayscale Image Conversions
Perceptual Evaluation of Color‐to‐Grayscale Image Conversions
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DOI：
10.1111/j.1467-8659.2008.01319.x
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发表时间：
2008-10
影响因子：
2.5
通讯作者：
Martin Čadík
中科院分区：
文献类型：
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作者：
Martin Čadík
彩色图像通常必须转换为灰度以用于再现、艺术目的或后续处理。执行彩色图像到灰度的转换的方法旨在尽可能多地保留关于原始彩色图像的信息，同时产生感知上合理的灰度结果。最近，人们提出了许多转换方法，但其性能尚未得到评估。因此，颜色到灰度转换的优点和缺点是未知的。在本文中，我们提出了两个主观实验的结果，其中共有24个彩色图像被转换为灰度使用七个国家的最先进的转换和评估119名人类受试者使用配对比较范例。我们调查了近20000人的反应，并使用它们来评估颜色到灰度转换的准确性和偏好。据我们所知，本文中的研究是第一个对颜色到灰度转换的感知评估。除了揭示所研究方法的优点和缺点外，本研究的目的是更深入地了解所研究的领域，这可以加速颜色到灰度转换的进展。
Color images often have to be converted to grayscale for reproduction, artistic purposes, or for subsequent processing. Methods performing the conversion of color images to grayscale aim to retain as much information about the original color image as possible, while simultaneously producing perceptually plausible grayscale results. Recently, many methods of conversion have been proposed, but their performance has not yet been assessed. Therefore, the strengths and weaknesses of color‐to‐grayscale conversions are not known. In this paper, we present the results of two subjective experiments in which a total of 24 color images were converted to grayscale using seven state‐of‐the‐art conversions and evaluated by 119 human subjects using a paired comparison paradigm. We surveyed nearly 20000 human responses and used them to evaluate the accuracy and preference of the color‐to‐grayscale conversions. To the best of our knowledge, the study presented in this paper is the first perceptual evaluation of color‐to‐grayscale conversions. Besides exposing the strengths and weaknesses of the researched methods, the aim of the study is to attain a deeper understanding of the examined field, which can accelerate the progress of color‐to‐grayscale conversion.