Korea Advanced Institute of Science and Technology

Giljoo Nam

Min Hyuk Kim

Joo Ho Lee

MinHyuk Kim

Disclosed are herein a three-dimensional (3D) object acquisition method and an object acquisition apparatus using artificial light photographs. A 3D object acquisition method according to an embodiment of the present invention includes receiving a plurality of images of a 3D object photographed by a camera, reconstructing spatially-varying bidirectional reflectance distribution functions for the 3D object based on the plurality of images received, estimating shading normals for the 3D object based on the reconstructed spatially-varying bidirectional reflectance distribution functions, and acquiring 3D geometry for the 3D object based on the estimated shading normals.

3D object acquisition method and apparatus using artificial light photograph

Disclosed is a system for simultaneously measuring a surface normal vector and a surface reflection function in microscale. The system includes a light dome having a hemispherical-shaped structure and including LEDs to radiate light to an object placed therein; a macro lens installed camera arranged over the light dome to photograph the object through a hole formed at a center of the light dome under an environment in which a light is radiated from the light dome; an xyz micro-translation stage arranged under the light dome and configured to move in xyz-directions to adjust a focal distance between the macro lens installed camera and the object, and a measurement unit configured to control the light dome and the macro lens installed camera to obtain a microscale image, and configured to simultaneously measure a surface normal vector and a surface reflection function of the object based on the microscale image.

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Daejeon, South Korea

Giljoo Nam