Spatiotemporal frequency characteristics of the visual unpleasantness of dynamic bandpass noise.
Spatiotemporal frequency characteristics of the visual unpleasantness of dynamic bandpass noise.
复制标题
动态带通噪声视觉不愉快的时空频率特征。
DOI：
10.1016/j.visres.2021.03.001
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发表时间：
2021
期刊：
影响因子：
1.8
通讯作者：
I.
中科院分区：
文献类型：
--
作者：
Ogawa;N. & Motoyoshi;I.
最近的心理物理学证据表明，视觉不适和不愉快与特定的图像特征有关，例如空间频率和方向谱。我们对移动的物体（例如成群的蠕虫）也有强烈的不愉快感，但人们对运动信息与不愉快感之间的关系知之甚少。本研究使用具有可变空间频率、时间频率、时间频率带宽和方向带宽的带通噪声研究了导致视觉不愉快的时空频率特性。结果表明，时间频率相对较低（0.5–2 Hz）的动态噪声明显比静态噪声更令人不愉快，包括在之前的研究中被认为是最令人不愉快的噪声。值得注意的是，噪音的平移运动并没有增加不愉快的感觉。随后的实验使用动态纹理，其中元素在不同范围的随机方向上移动，结果表明，多样化的运动方向在造成视觉不愉快方面起着关键作用。自然场景具有规律性，因为物体内部的特征通常朝同一方向移动，很少随机移动，目前的结果进一步支持了这样的观点，即偏离图像和电影中自然场景的统计规律会引发负面情绪。
Recent psychophysical evidence shows that visual discomfort and unpleasantness are related to particular image features such as the spatial frequency and orientation spectrum. We also have a strong unpleasant feeling toward moving objects such as swarming worms, but it is poorly understood how motion information relates to a feeling of unpleasantness. The present study investigated spatiotemporal frequency characteristics that cause visual unpleasantness using bandpass noise with variable spatial frequencies, temporal frequencies, temporal frequency bandwidths, and orientation bandwidths. Results show that dynamic noise with relatively low temporal frequencies (0.5–2 Hz) was markedly more unpleasant than static noise, including that judged as the most unpleasant in a previous study. Remarkably, translational motion of the noise did not increase the feeling of unpleasantness. A subsequent experiment using a dynamic texture in which elements moved in a variable range of random directions showed that the variegated motion direction plays a critical role in promoting visual unpleasantness. Natural scenes have regularity in that features inside an object usually move in the same direction and rarely at random, and the present results further support the notion that deviation from the statistical regularity of natural scenes in images and movies induces negative emotions.