Surface scratches: measuring, modeling and rendering

摘要

One of the most important criticisms that can be made concerning synthesized images is the brand new and too clean aspect of objects. Surface color modifica- tions can be used to introduce dirtiness or other aging- linked characteristics. Also, techniques such as bump or displacement mapping allow users to improve sur- face aspects by introducing geometrical perturbations. In parallel, the bidirectional reflectance distribution Function (BRDF) is a crucial factor in achieving a high ]degree of realism.