6533b833fe1ef96bd129ba4b

RESEARCH PRODUCT

3D shape extraction of internal and external surfaces of glass objects

subject

description

Three-dimensional (3D) digitization of manufactured objects has been investigated for several years and consequently, many techniques have been proposed. Even if some techniques have been successfully commercialized, most of them assume a diffuse or near diffuse reflectance of the object’s surface, and difficulties remain for the acquisition of “optically non cooperative” surfaces, such as transparent or specular ones. To address such surfaces, we propose a non conventional technique, called “Scanning from Heating” (SfH). In contrast to classical active triangulation techniques that acquire the reflection of visible light, we measure the thermal emission of the heated surface. The aim of this paper is to demonstrate, by using the experimental setup designed for specular (transparent or not) objects, how this method allows reconstruction both of internal and external surfaces of glass objects from a unique measure.