Subjective Evaluation and Modeling Effect of Human Face Using CG Image

Abstract

The modeling effect of human face has been studied from the view points of using model such as mannequin. Recently，the image of the human face with the reality can be made with advancement of the computer graphics （CG）technique. Using this technique, facial impression can be varied easily and minutely because of width of the selection of lighting condition compared with the method using model. In this paper，modeling effect of human face is examined by visually appraising CG images of human faces instead of model such as mannequin. Consequently，the following results are obtained. （1） The correlation between the taste for facial impression and the factor score is found on the basis of the subjective evaluation. （2） The fractal dimension on luminance distribution of human face depends on the vertical angle of irradiation light and also the difference between male and female faces. （3） It is able to be visually recognized that the facial impression is different with changing ratio of brightness of irradiation light from right and left, but it is found that the change of　fractal dimension is very small.