通过美学分析对比中美新闻缩略图风格差异，揭示文化偏好影响视觉呈现。
Detecting Cultural Differences in News Video Thumbnails via Computational Aesthetics
- 先按内容聚类再比较美学特征，分步识别文化差异。
- 美式缩略图更暗、更饱和、细节更精细，中式更随意、色彩更丰富。
- 适用于研究跨文化传播、视觉信息操控或媒体偏见的学者与从业者。
我们提出一种两步法，用于检测不同文化背景来源图像的风格差异：首先基于内容将图像聚类为更细粒度的视觉主题，再比较其美学特征。实验使用2400张来自美国和中国各两个YouTube频道的视频缩略图，涵盖新冠疫情和乌克兰冲突，数量均衡。结果表明，中国缩略图风格更随意自然，美国则倾向于精心选择的正式照片。具体而言，美国缩略图色彩更少、饱和度更高、更暗、细节更精细、对称性更低、构图更稀疏、变化更少，且视角更贴近人物。这些差异大多反映文化偏好，本方法可作为识别可疑视觉宣传的基准参考。
原文摘要 · Abstract (English)
We propose a two-step approach for detecting differences in the style of images across sources of differing cultural affinity, where images are first clustered into finer visual themes based on content before their aesthetic features are compared. We test this approach on 2,400 YouTube video thumbnails taken equally from two U.S. and two Chinese YouTube channels, and relating equally to COVID-19 and the Ukraine conflict. Our results suggest that while Chinese thumbnails are less formal and more candid, U.S. channels tend to use more deliberate, proper photographs as thumbnails. In particular, U.S. thumbnails are less colorful, more saturated, darker, more finely detailed, less symmetric, sparser, less varied, and more up close and personal than Chinese thumbnails. We suggest that most of these differences reflect cultural preferences, and that our methods and observations can serve as a baseline against which suspected visual propaganda can be computed and compared.
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