이미지 기반 쌍대비교를 통한 국가지점번호의 시각적 주목성 평가

초록

Hiking trails are natural environments where background color and luminance vary according to vegetation density, spatial structure, and thepresence of facilities. These variations can influence the visibility of National Location Number signs during emergency situations. However,empirical research on the performance of the current standardized color scheme under different background conditions remains limited. Thisstudy evaluates the visual conspicuity of sign colors across various hiking trail environments using an image-based paired comparison method. A total of twenty-five background images representing five types of hiking trail conditions were combined with eight sign colors, includingfour safety colors defined in KS S ISO 3864 and four achromatic colors. Data collected from 49 participants were analyzed using theTrueSkill algorithm and two-way ANOVA. The results show that color significantly affects visual conspicuity. Yellow demonstrated thehighest and most consistent visibility across all background conditions, followed by white and red, whereas achromatic colors consistentlyshowed low conspicuity. Background condition also had a significant effect, with higher conspicuity observed in environments featuringpartially clear boundaries and shrub-dominant vegetation. In addition, significant interaction effects were identified, indicating that theconspicuity of green, white, and black changes depending on vegetation composition and the presence of facilities.

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