Abstract
This paper describes the method of shape recovery of specular objects illuminated by multiple light sources by pattern recognition. In this method, a three-dimensional shape is recovered from an epipolar plane image (EPI) of a rotating image. The highlight reflected from an object has a traveling characteristic corresponding to the surface profile of the object. The highlight appears in EPI as image speed. Therefore, the three-dimensional shape can be quantitatively recovered by tracing the locus of the highlight on EPI if the relationship among the shape of the object, light source, direction of view, and highlight is equated. In this study, the relationship among the object shape under illumination from multiple light sources, direction of view, and highlight is equated in order to quantitatively recover the cross-sectional view of a columnar object. In addition, three-dimensional shape recovery of a general object is accomplished by introducing the light source model of a cone-shaped illumination plane. Finally, in order to show the validity of this method, the experimental result on the recovery of specular objects and its evaluation will be described.
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