Department of Pattern Recognition

(eng): 3D printing becomes a standard for rapid prototyping and fabrication of customized parts. When it comes to appearance of the printed parts, it is highly affected by the printing filament type and its properties. This paper analyses reflective translucency of seventeen 3D prints and their original filaments. We performed a psychophysical study to obtain perceived translucency data, i.e. discriminability of background based on its reflection when passing through translucent material. These data are then compared with translucency measurements using a commercial device. Finally, we captured BRDF data of the filaments and used them to determine appropriate translucency measurement conditions.