Abstract
We present a new image-based process for measuring the bidirectional reflectance of homogeneous surfaces rapidly, completely, and accurately. For simple sample shapes (spheres and cylinders) the method requires only a digital camera and a stable light source. Adding a 3D scanner allows a wide class of curved near-convex objects to be measured. With measurements for a variety of materials from paints to human skin, we demonstrate the new method’y to achieve high resolution and accuracy over a large domain of illumination and reflection directions. We verify our measurements by tests of internal consistency and by comparison against measurements made using a gonioreflectomter.
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Marschner, S.R., Westin, S.H., Lafortune, E.P.F., Torrance, K.E., Greenberg, D.P. (1999). Image-Based BRDF Measurement Including Human Skin. In: Lischinski, D., Larson, G.W. (eds) Rendering Techniques’ 99. EGSR 1999. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6809-7_13
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DOI: https://doi.org/10.1007/978-3-7091-6809-7_13
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