Deep Lambertian Networks (DLN) Yichuan Tang et al, Deep Lambartian Networks http://www.cs.toronto.edu/~fritz/absps/dln.pdf. is a combination of Deep belief network and Lambertian reflectance assumption which deals with the challenges posed by illumination variation in visual perception. Lambertian Reflectance model gives an illumination invariant representation which can be used for recognition. The Lambertian reflectance model is widely used for
