Corpus ID: 7378353

The Appearance of Brightness and Lightness

  title={The Appearance of Brightness and Lightness},
  author={J. McCann},
  booktitle={Color Imaging Conference},
  • J. McCann
  • Published in Color Imaging Conference 2000
  • Computer Science
In simplest terms, brightness is the appearance of luminance and lightness is the appearance of objects. The experiments in this paper measure the appearance of three visible faces of a real cube in real-life illumination. Three faces of the cube are painted white and the other three are painted different shades of gray. When the observer sees three white faces the experiment measures the appearance of illumination. When the experimenter rotates the cube to make visible a face with a different… Expand
5 Citations
Reflectance, illumination, and appearance in color constancy
A dataset of measurements of color appearances for computational models of sensation is provided, using a pair of identical 3-D Color Mondrian displays to measure correlation of appearance with surface reflectance. Expand
Do humans discount the illuminant?
  • J. McCann
  • Computer Science, Engineering
  • IS&T/SPIE Electronic Imaging
  • 2005
This paper analyses a series of different experiments looking for unequivocal evidence that either supports “discounting the illuminant” or supports spatial comparisons as the underlying mechanism of constancy. Expand
Influence of mottle on color reproduction
Mottle becomes a major concern when considering print quality of coated paper and board, both produced with the lithographic and flexographic printing processes. Even if mottle is not a newExpand


Invariant Recognition of Natural Objects in the Presence of Shadows
Two studies show that recognition of natural objects is highly invariant to the complex luminance patterns caused by shadows, and whether shadows have a stronger impact when exposure time is limited, allowing little time for processing shadows is examined. Expand
Calculating the lightness of areas in a single plane
  • J. McCann
  • Engineering, Computer Science
  • Electronic Imaging
  • 2000
It is demonstrated that 'Early Vision' explanations are possible, without reliance on apparent illumination, transparency, apparent depth and junctions, and that these experiments cannot be used as evidence for the existence of 'High Vision' mechanisms. Expand
Simultaneous constancy, lightness, and brightness.
  • L. Arend, R. Goldstein
  • Physics, Medicine
  • Journal of the Optical Society of America. A, Optics and image science
  • 1987
An achromatic surface in a complex scene has both an apparent reflectance attribute (lightness) and an overall intensitive attribute (brightness). We studied changes of these two attributes as aExpand
Lightness Induction Revisited
An alternative look at lightness induction as a phenomenon of the pictorial vision, which rests on the lightness – shadow invariance, much as Gregory's ‘inappropriate constancy scaling’ theory of geometrical illusions rested on the apparent size – distance invariance. Expand
The Effect of the Nature of the Surround on the Perceived Lightness of Grey Bars within Square-Wave Test Gratings
  • M. White
  • Mathematics, Medicine
  • Perception
  • 1981
It is concluded that techniques involving lightness assimilation could provide investigators with a sensitive new method of investigating the specificities of the inhibitory interactions underlying pattern perception. Expand
Color Appearance Models
This book is a good overview of the most important and relevant literature regarding color appearance models and offers insight into the preferred solutions. Expand
A technique for comparing the human visual responses with lightness predictions made by a mathematical model and a variety of situations that can be used to establish whether a particular model can be considered a general model for lightness are reported. Expand
Brightness perception in complex fields.
A family of brightness functions has been computed from the data for complex stimuli such as photographic reproductions viewed with both illuminated and dark surrounds, which exhibit exponential decay from the power form as a function of both screen luminance and surround luminance. Expand
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