Browsing NTNU Open by Author "Urban, Philipp"

Now showing items 1-8 of 8

    • 3D Printing Spatially-varying Color and Translucency 

      Brunton, Alan; Arikan, Can Ates; Tanksale, Tejas Madan; Urban, Philipp (Journal article; Peer reviewed, 2018)
      We present an efficient and scalable pipeline for fabricating full-colored objects with spatially-varying translucency from practical and accessible input data via multi-material 3D printing. Observing that the costs ...

    • Automatic data-driven design and 3D printing of custom ocular prostheses 

      Reinhard, Johann; Urban, Philipp; Bell, Stephen; Carpenter, David; Sagoo, Mandeep S. (Journal article; Peer reviewed, 2024)
      Millions of people require custom ocular prostheses due to eye loss or congenital defects. The current fully manual manufacturing processes used by highly skilled ocularists are time-consuming with varying quality. Additive ...

    • Deep learning models for optically characterizing 3D printers 

      Chen, Danwu; Urban, Philipp (Peer reviewed; Journal article, 2021)
      Multi-material 3D printers are able to create material arrangements possessing various optical properties. To reproduce these properties, an optical printer model that accurately predicts optical properties from the printer’s ...

    • The Impact of Optical and Geometrical Thickness on Perceived Translucency Differences 

      Gigilashvili, Davit; Urban, Philipp; Thomas, Jean Baptiste; Pedersen, Marius; Hardeberg, Jon Yngve (Peer reviewed; Journal article, 2022)
      In this work we study the perception of suprathreshold translucency differences to expand the knowledge about material appearance perception in imaging and computer graphics, and 3D printing applications. Translucency is ...

    • Impact of Shape on Apparent Translucency Differences 

      Gigilashvili, Davit; Urban, Philipp; Thomas, Jean-Baptiste; Hardeberg, Jon Yngve; Pedersen, Marius (Journal article; Peer reviewed, 2019)
      Translucency is one of the major appearance attributes. Apparent translucency is impacted by various factors including object shape and geometry. Despite general proposals that object shape and geometry have a significant ...

    • Inducing robustness and plausibility in deep learning optical 3D printer models 

      Chen, Danwu; Urban, Philipp (Peer reviewed; Journal article, 2022)
      Optical 3D printer models characterize multimaterial 3D printers by predicting optical or visual quantities from material arrangements or tonal values. Their accuracy and robustness to noisy training data are crucial for ...

    • Perceptual Navigation in Absorption-Scattering Space 

      Gigilashvili, Davit; Urban, Philipp; Thomas, Jean Baptiste; Pedersen, Marius; Hardeberg, Jon Yngve (Peer reviewed; Journal article, 2021)
      Translucency optically results from subsurface light transport and plays a considerable role in how objects and materials appear. Absorption and scattering coefficients parametrize the distance a photon travels inside the ...

    • Redefining A in RGBA: Towards a Standard for Graphical 3D Printing 

      Urban, Philipp; Brunton, Alan; Tanksale, Tejas Madan; Minh Vu, Bui; Shigeki, Nakauchi (Journal article; Peer reviewed, 2019)
      Advances in multimaterial 3D printing have the potential to reproduce various visual appearance attributes of an object in addition to its shape. Since many existing 3D file formats encode color and translucency by RGBA ...