通过瞳孔大小变化，揭示人眼评估图像质量时的注意力机制。
Exploring Image Quality Assessment from a New Perspective: Pupil Size
- 用瞳孔尺寸变化捕捉视觉注意力激活过程。
- 评分任务中瞳孔变化与图像质量显著相关。
- 为客观与主观图像质量评估提供新方法参考。
本文从瞳孔大小角度探索图像质量评估（IQA）对认知过程的影响，研究瞳孔大小与图像质量的关系。首先开展主观实验，包含自由观察和IQA评分两个任务：自由观察中受试者仅如翻阅相册般自然观看图像；在IQA任务中，受试者根据整体印象对图像质量打分。通过分析两任务间瞳孔大小差异，发现人在评估图像质量时会激活视觉注意力机制；同时，在IQA任务中，瞳孔变化与图像质量密切相关。该研究可为客观IQA方法提供理论支持，推动更有效的客观评估模型发展，也为收集真实主观印象的IQA方法提供新思路。
原文摘要 · Abstract (English)
This paper explores how the image quality assessment (IQA) task affects the cognitive processes of people from the perspective of pupil size and studies the relationship between pupil size and image quality. Specifically, we first invited subjects to participate in a subjective experiment, which includes two tasks: free observation and IQA. In the free observation task, subjects did not need to perform any action, and they only needed to observe images as they usually do with an album. In the IQA task, subjects were required to score images according to their overall impression of image quality. Then, by analyzing the difference in pupil size between the two tasks, we find that people may activate the visual attention mechanism when evaluating image quality. Meanwhile, we also find that the change in pupil size is closely related to image quality in the IQA task. For future research on IQA, this research can not only provide a theoretical basis for the objective IQA method and promote the development of more effective objective IQA methods, but also provide a new subjective IQA method for collecting the authentic subjective impression of image quality.
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