When the illumination on a scene changes, so do the visual signals elicited by that scene. In
spite of these changes, the objects within a scene tend to remain constant in their apparent …

This chapter proposes a novel hierarchical classification system based on the K-Nearest
Neighbors (K-NN) model and its application to non-melanoma skin lesion classification …

Most image dehazing algorithms require, for their operation, the atmospheric light vector, A,
which describes the ambient light in the scene. Existing methods either rely on user input or …

In inhomogeneous objects, highlights are linear combinations of diffuse and specular
reflection components. To our knowledge, all methods that use a single input image require …

Integrative Co-occurrence matrices are introduced as novel features for color texture
classification. The extended Co-occurrence notation allows the comparison between …

Existing color constancy methods cannot handle both uniformly colored surfaces and highly
textured surfaces in a single integrated framework. Statistics-based methods require many …

Abstract The White-Patch method, one of the very first colour constancy methods, estimates
the illuminant colour from the maximum response of three colour channels. However, this …

We present a physics-based illumination estimation approach explicitly designed to handle
natural images under ambient light. Existing physics-based color constancy methods are …

By determining the locations of boundaries between colour categories, we measured
changes in the colour appearance of test-reflectances as a function of the simulated …

Complex reflectance phenomena such as specular reflections confound many vision
problems since they produce image 'features' that do not correspond directly to intrinsic …