The Effect of Changing Image Resolution and Modulation of Emotional Valence on Human Perception

Zihan Yu

《International Core Journal of Engineering》 8卷10期 (2022/10) Pp. 118-124

https://doi.org/10.6919/ICJE.202210_8(10).0018

摘要

Visual perception is the most extensively studied field in human perception for the practicality and explicitness of its experiments. Digital images have been used as visual stimuli and human perception are studied with certain properties of the image being changed. Although various properties of digital images have been evaluated, image resolution has rarely been selected as the independent variable in empirical research. In this paper, two experiment are proposed to evaluate the sole effect of image resolution on viewers' valence and arousal rate. Different images are chosen from IAPS and are adjusted to different resolution levels, viewers' valence and arousal rate are acquired using questionnaires. According to the result of the experiment, corresponding conclusions are provided in the paper. A strong relationship is anticipated between subjects' arousal and image resolution, indicating images of higher resolution would receive higher arousal rate. Image valence is predicted to have a more intricate relationship with image resolution, subjects' valence could increase as the resolution gets higher, and a threshold resolution may exist for valence increase, above which the subjects' valence remain unchanged. Recognition of the image would be germane to the change of arousal and valence as well.

關鍵字

Image Valence ； Arousal Rating ； Image Resolution

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