3D object reconstruction using image scanner with multiple light sources

This study proposes a 3D shape measurement device based on an image scanner. The shape reconstruction method using the image scanner is one of the photometric stereo method which uses multiple parallel light sources, but our proposed method is applied to linear light sources. This method is constructed by several processes. First, we estimate an object shape using four images taken by two groups of two light sources located in same direction. And then, the color and specular components are estimated by using several images taken by light sources located in a circular path. In experiments, we investigate optimal number and location of light sources to estimate object shape, color and specular components.