색각 이상 플레이어를 위한 색상-형태 이중 인코딩 기반 게임 접근성 디자인 프레임워크 연구

초록

This study aims to propose an information-based redundant encoding design framework and exploratorily evaluate user responses and applicability through prototype implementation that integrates color, shape, brightness, and patterns to enhance game accessibility for users with Color Vision Deficiency (CVD). Current game interfaces heavily rely on a single color visual channel, which easily leads to information recognition errors and operational errors for CVD users. To address this issue, a multidimensional visual information design framework was constructed by integrating the Okabe & Ito color vision-friendly color system, color-shape redundant encoding, and Paul Tols diverging color schemes. Through shape and pattern mapping, brightness contrast adjustment, and optimization of color distribution, the framework enhances perceptual discriminability and compensates for the limitations of single-color encoding. To exploratorily evaluate the applicability of the proposed framework, a puzzle game prototype titled Together was developed, and a user evaluation was conducted with 31 participants with CVD. The results showed that both information recognition ease and operational accuracy reached 71%. In the HCI evaluation, accessibility (81%), usability (78%), efficiency (72%), and user satisfaction (83%) all showed positive results, indicating overall positive user responses to the proposed framework. However, some users still exhibited color-dependent cognitive strategies, and increased information processing delay and cognitive load were observed in complex interface environments. This indicates that while the design is effective in static environments, further optimization is required for dynamic interactive contexts. This study extends the traditional color-correction-centered research paradigm by proposing a design framework based on information encoding structure optimization and exploratorily examining its practical applicability. It provides new perspectives and theoretical foundations for CVD-related game accessibility research and is expected to make meaningful contributions in both academic and applied domains.

키워드