Speckle in BRDF measurements: solid angle considerations

Authors :: Pierre Chavel
Thomas Labardens
Lionel Simonot
Mathieu Hébert
Yvan Sortais
Gaël Obein
Source :: Frontiers in Optics + Laser Science 2021.
Publication Year :: 2021
Publisher :: Optica Publishing Group, 2021.
Abstract: since the bidirectional reflectance distribution function applies to scattering media, it is inherently prone to speckle. Conditions to average out speckle by integration over solid angle both on the illumination side and on the detection side are analyzed.