Consistent Surface Color for Texturing Large Objects in Outdoor Scenes

Color appearance of an object is significantly influenced by the color of the illumination. When the illumination color changes, the color appearance of the object will change accordingly, causing its appearance to be inconsistent. To arrive at color constancy, we have developed a physics-based method of estimating and removing the illumination color. In this paper, we focus on the use of this method to deal with outdoor scenes, since very few physics-based methods have successfully handled outdoor color constancy. Our method is principally based on shadowed and non-shadowed regions. Previously researchers have discovered that shadowed regions are illuminated by sky light, while non-shadowed regions are illuminated by a combination of sky light and sunlight. Based on this difference of illumination, we estimate the illumination colors (both the sunlight and the sky light) and then remove them. To reliably estimate the illumination colors in outdoor scenes, we include the analysis of n...

• Type: Conference
• Year: 2005
• Where: ICCV
• Authors: Rei Kawakami, Katsushi Ikeuchi, Robby T. Tan
• Keywords: Color Appearance, Computer Vision, ICCV 2005, Illumination Color, Illumination Colors, Outdoor Color Constancy, Outdoor Scenes