Despite the complexity of the visual world, humans rarely confuse variations in illumination,
for example shadows, from variations in material properties, such as paint or stain. This …

Visual estimation of the material and shape of an object from a single image includes a hard
ill-posed computational problem. However, in our daily life we feel we can estimate both …

In everyday experience, perceived colors of objects remain approximately constant under
changes in illumination. This constancy is helpful for identifying objects across viewing …

Edge detection plays an important role in human vision, and although it is clear that there
are luminance edge detectors, it is not known whether there are chromatic edge detectors as …

Form vision is traditionally regarded as processing primarily achromatic information.
Previous investigations into the statistics of color and luminance in natural scenes have …

Color vision provides humans and animals with the abilities to discriminate colors based on
the wavelength composition of light and to determine the location and identity of objects of …

A fundamental problem in image analysis is to understand the nature of the computations
and mechanisms that provide information about the material properties of surfaces …

Many researchers believe the human visual system classifies luminance edges into those
produced by reflectance edges or those produced by illumination edges, yet this …

We have revealed a new role for colour vision in visual scene analysis: colour vision
facilitates shadow identification. Shadows are important features of the visual scene …

Although color term 'Gold'is commonly used, traditional color science cannot deal with
'Gold'because there is no region corresponding to 'Gold'in the chromaticity diagram …