Building a gonioreflectometer - a geometrical evaluation

A gonioreflectometer is a device for measuring the reflectance properties of the surface of a specimen by means of the bidirectional reflectance distribution function (BRDF). In order to scan the 4D BRDF parameter space, such a device requires at least one light source and one detector and the ability to move at least two of the following: light source, detector, and specimen. In this work we analyze the geometry of a conceptual measurement device where the specimen is moved by three rotary stages assembled to form a gimbal mount. The camera - as detector - remains fixed, and the light source is moved along a circular trajectory centered on the specimen surface. The model presented allows evaluation of the subspace of the BRDF parameter space that is accessible using a given measurement setup.

[1]  Stephen H. Westin,et al.  Measuring and modeling the appearance of finished wood , 2005, ACM Trans. Graph..

[2]  F. E. Nicodemus,et al.  Geometrical considerations and nomenclature for reflectance , 1977 .

[3]  Steve Marschner,et al.  Light scattering from human hair fibers , 2003, ACM Trans. Graph..

[4]  Paul E. Debevec,et al.  Acquiring the reflectance field of a human face , 2000, SIGGRAPH.

[5]  Fernando Puente León,et al.  Invariante Merkmale zur Klassifikation von Defekten aus Beleuchtungsserien (Invariant Features for Classification of Defects Based on Illumination Series) , 2008 .

[6]  Wei-Chao Chen,et al.  Light field mapping: efficient representation and hardware rendering of surface light fields , 2002, SIGGRAPH.

[7]  Pietro Perona,et al.  3D photography on your desk , 1998, Sixth International Conference on Computer Vision (IEEE Cat. No.98CH36271).

[8]  Janne Heikkilä,et al.  A four-step camera calibration procedure with implicit image correction , 1997, Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition.

[9]  F. E. Nicodemus.  Directional Reflectance and Emissivity of an Opaque Surface , 1965 .

[10]  Paul Debevec,et al.  The Light Stages and Their Applications to Photoreal Digital Actors , 2012, SIGGRAPH 2012.

[11]  Wojciech Matusik,et al.  A data-driven reflectance model , 2003, ACM Trans. Graph..

[12]  Anselmo Lastra,et al.  A generalized surface appearance representation for computer graphics , 2002 .