National Comparison of Influence on Subjective Impression by Images in Different Resolutions

抄録

The development of imaging technologies and display enable the performance of 4K (3840 × 2160px) and 8K (7680 × 4320px) contents. To provide attractive 4K video content, it is important to design and manage services based on users' quality of experience (QoE). To establish a “comprehensive QoE evaluation technology” previous studies have considered various aspects media quality, user attributes, the purpose of use, usability, service attributes and others. However, regional differences have largely not been investigated. In this paper, we measured the impression of images in different resolutions by SD (Semantic Differential) Method and analyzed subjective data by factor analysis, followed by a comparison between Chinese and Japanese test subjects. Results demonstrate that “the feeling of details clarity” is strongly related to changes in image resolution, while “the feeling of naturalness” and “the feeling of impact” are related to the material used. The understanding of contents and the adjective pairs “Strong contrast - Weak contrast”, “Clearly - Fade” belonged to 1^st factor “the feeling of details clarity” were found to be dependent on the viewer's region.