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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
A Portable Setup for Fast Material Appearance Acquisition
 Filip, Jiří ; Vávra, Radomír ; Krupička, Mikuláš
A photo-realistic representation of material appearance can be achieved by means of bidirectional texture function (BTF) capturing a material's appearance for varying illumination, viewing directions, and spatial pixel coordinates. BTF captures many non-local effects in material structure such as inter-reflections, occlusions, shadowing, or scattering. The acquisition of BTF data is usually time and resource-intensive due to the high dimensionality of BTF data. This results in expensive, complex measurement setups and/or excessively long measurement times. We propose an approximate BTF acquisition setup based on a simple, affordable mechanical gantry containing a consumer camera and two LED lights. It captures a very limited subset of material surface images by shooting several video sequences. A psychophysical study comparing captured and reconstructed data with the reference BTFs of seven tested materials revealed that results of our method show a promising visual quality.
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7 KRUPIČKA, Martin
7 Krupička, Martin
2 Krupička, Matúš
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