Effects of the number of strokes, components and usage frequency on the legibility of Chinese characters for optical head-mounted display

Chih-Yu Hsiao, Chien-Chi Chang, Chun-Ju Liu and Kang-Hung Liu

Behaviour and Information Technology, 2024, vol. 43, issue 4, 749-763

Abstract: This study investigates the visual angle threshold value for the recognition of Chinese characters displayed on the optical head-mounted display. As optical head-mounted displays are becoming increasingly popular in various fields, character legibility has become an important topic for research. In this study, a legibility test was conducted by randomly displaying characters on the optical head-mounted display. The characteristics that were tested included the number of strokes, components and usage frequency rankings. The visual angle threshold value of each character was recorded and analysed. The results indicate that Chinese characters with more strokes, more components and lower usage frequency have a larger visual angle threshold value than characters with fewer strokes, fewer components and higher frequency. The number of strokes and usage frequency rankings were inputted into a regression model to predict the visual angle threshold value for character recognition (R2 = 0.72; Adj-R2 = 0.71). The regression analyses revealed that the foregoing inputs increased the visual angle threshold value. These findings provide a practical reference for the display of Chinese characters on optical head-mounted displays.

Date: 2024
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DOI: 10.1080/0144929X.2023.2184181

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