Image-Based BRDF Measurement Including Human Skin

: 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’s ability 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 gonioreflectometer.

• Type: Conference
• Year: 1999
• Where: RT
• Authors: Stephen R. Marschner, Stephen H. Westin, Eric P. Lafortune, Kenneth E. Torrance, Donald P. Greenberg
• Keywords: Computer Graphics, Measurements, RT 1999, Simple Sample Shapes, Stable Light Source