It has been reported that the whiteness of the area surrounded by the 2 chromatic lines which mediate watercolor effect can be enhance by choosing certain conditions such as color and luminance. In this study, we conducted a pairwise comparison experiment using the achromatic stimuli which arose watercolor effect. They were composed of the combination of two lines of different levels of gray. The stimuli were presented on the gray background and two levels of gray were selected from five luminance values. The brightness inside the inner contour lines was evaluated to examine their impact on the perception of brightness and related factors. The results revealed that the 10 subjects, who served as observers, could be broadly divided into two types. It was also found that the perception of brightness could be enhanced by the stimuli produced by achromatic watercolor effects. The suggested factors were the relationship of the total inner and outer contour lines with the luminance value, and the relationship of inner and outer contour lines with the difference in background brightness.

  Construction of make-up design in make-up treatment is an important process based on visual observation and impression analysis of the other person's face. Experienced visual impression analysis skills lead to the construction of appropriate make-up designs and the selection of treatment methods. In this study, we focused on the gaze during impression analysis by experienced make-up artists (experts) and novices who are in training. We measured the gazes of experts and novices looking at facial images of the bare skin of a woman in her 20s and a woman in her 50s. For the measurement results, we set areas of interest (AOIs) on important parts of the face in the make-up treatment, and calculated the fixation rate for each. The results suggest that there are some differences in the gaze patterns of experienced make-up artists and novices in training. There were also differences in the type and color of cosmetics selected, and we discussed them. Based on the results of this study, we will formalize the skills of experienced make-up artists in a form that can be transferred and construct a self-learning system that allows learning on tablets and other devices similar to learning in professional training.