Masumitsu Taishi, Mizokami Yoko
J Opt Soc Am A Opt Image Sci Vis. 2020 May 1;37(5):A294-A304. doi: 10.1364/JOSAA.382414.
We investigated as to whether the naturalness of images modulated by a combination of chroma and lightness contrast affects the colorfulness perception. Four types of modulated images with different combinations of chroma and lightness contrast were used as adaptation stimuli. After adapting to one of the adaptation stimuli groups, observers judged the colorfulness of test images that were also modulated by the different combinations of chroma and lightness contrast. Our results showed that the combination of chroma and lightness contrast modulation affected the strength of colorfulness adaptation. The results also indicated that when adapting to images that exhibited high naturalness, the effect of colorfulness adaptation was strong. It was suggested that the naturalness of the chroma and lightness combination is an important factor for colorfulness adaptation.
我们研究了由色度和亮度对比度组合调制的图像的自然度是否会影响色彩感知。四种具有不同色度和亮度对比度组合的调制图像被用作适应刺激。在适应其中一组适应刺激后，观察者判断同样由色度和亮度对比度不同组合调制的测试图像的色彩。我们的结果表明，色度和亮度对比度调制的组合影响了色彩适应的强度。结果还表明，当适应表现出高自然度的图像时，色彩适应的效果很强。有人提出，色度和亮度组合的自然度是色彩适应的一个重要因素。
