منابع مشابه
Lightness, brightness, and anchoring.
The majority of work in lightness perception has evaluated the perception of lightness using flat, matte, two-dimensional surfaces. In such contexts, the amount of light reaching the eye contains a conflated mixture of the illuminant and surface lightness. A fundamental puzzle of lightness perception is understanding how it is possible to experience achromatic surfaces as specific achromatic sh...
متن کاملLightness and brightness
which had Galileo among its members. He commissioned artists to record plants, birds and animals for his museum and a pictorial encyclopaedia that attempted to understand and classify both the natural and ‘man-made’ world. Alexander Marshal’s floral paintings were compiled at a time when the cultivation of gardens had become a pursuit of scholars and collectors, keenly interested in exotic spec...
متن کاملLightness, brightness, and brightness contrast: 2. Reflectance variation.
Changes of annulus luminance in traditional disk-and-annulus patterns can be perceived to be either reflectance or illuminance changes. In the present experiments, we examined the effect of varying annulus reflectance. In Experiment 1, we placed test and standard patch-and-surround patterns in identical Mondrian patchworks. Only the luminance of the test surround changed from trial to trial, ap...
متن کاملLightness, brightness, and brightness contrast: 1. Illuminance variation.
Changes of annulus luminance in traditional disk-and-annulus patterns are perceptually ambiguous; they could be either reflectance or illuminance changes. In more complicated patterns, apparent reflectances are less ambiguous, letting us place test and standard patches on surrounds perceived to be different grays. Our subjects matched the apparent amounts of light coming from the patches (brigh...
متن کاملThe Appearance of Brightness and Lightness
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 appea...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2007
ISSN: 0960-9822
DOI: 10.1016/j.cub.2007.01.040