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Sensors 2014, 14(5), 7753-7819; doi:10.3390/s140507753
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Design and Implementation of Practical Bidirectional Texture Function Measurement Devices Focusing on the Developments at the University of Bonn

1,* , 1
, 1
, 2
 and 1
1 Institut für Informatik II, Universität Bonn, Friedrich-Ebert-Allee 144, 53113 Bonn, Germany 2 X-Rite Deutschland GmbH, Adenauerallee 170, 53113 Bonn, Germany
* Author to whom correspondence should be addressed.
Received: 3 January 2014 / Revised: 18 April 2014 / Accepted: 18 April 2014 / Published: 28 April 2014
(This article belongs to the Section Physical Sensors)

Abstract

Understanding as well as realistic reproduction of the appearance of materials play an important role in computer graphics, computer vision and industry. They enable applications such as digital material design, virtual prototyping and faithful virtual surrogates for entertainment, marketing, education or cultural heritage documentation. A particularly fruitful way to obtain the digital appearance is the acquisition of reflectance from real-world material samples. Therefore, a great variety of devices to perform this task has been proposed. In this work, we investigate their practical usefulness. We first identify a set of necessary attributes and establish a general categorization of different designs that have been realized. Subsequently, we provide an in-depth discussion of three particular implementations by our work group, demonstrating advantages and disadvantages of different system designs with respect to the previously established attributes. Finally, we survey the existing literature to compare our implementation with related approaches.
Keywords: bidirectional texture function; BTF; bidirectional reflectance distribution functions; BRDF; light field; acquisition device; high dynamic range; HDR; camera calibration; gonioreflectometer bidirectional texture function; BTF; bidirectional reflectance distribution functions; BRDF; light field; acquisition device; high dynamic range; HDR; camera calibration; gonioreflectometer
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Schwartz, C.; Sarlette, R.; Weinmann, M.; Rump, M.; Klein, R. Design and Implementation of Practical Bidirectional Texture Function Measurement Devices Focusing on the Developments at the University of Bonn. Sensors 2014, 14, 7753-7819.

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