[OPTICAL REVIEW Vol. 5, No. 2 (1998) 124-127]

Neon Color Spreading Promoted by Motion Information

Katsunori OKAJIMA, Tatsumi ODA and Masanori TAKASE

Department of Applied Physics, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-8686 Japan

(Received October 27, 1997; Accepted December 22, 1997)

We conducted experiments to investigate the effects of head-motion and object-motion to produce a perception of neon color spreading. Our experimental results indicated that a two-dimensional motion of yellow patches promoted the color spreading. A horizontal head-motion with motion parallax and three-dimensional pictorial depth information together with changing the viewing point stimulated the color spreading even, more than the two-dimensional motion. Thus, motion signals appear to offer useful information for the formation of a subjective contour and/or to activate the filling-in effect needed to generate neon color spreading. We also tested whether there was a difference between the effects of vertical and horizontal motion parallaxes for neon color spreading and found that there was none. This suggests that vertical head motion provides information in depth and surface perception equivalent to horizontal head motion.

Key words : neon color spreading, surface perception, head-motion, motion parallax, egocentric motion, depth perception, structure-from-motion, three-dimensional computer graphics