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The fact that a white object under dim illumination appears lighter than a grey object under bright illumination is called lightness constancy.
What do you mean by lightness constancy?
According to the theory of lightness constancy, we continue to see an object in terms of the percentage of light that it reflects rather than the total amount of light that it reflects. A gray item will be perceived as gray across significant changes in illumination.
- Our capacity to distinguish between objects' relative reflectances despite variations in illumination is referred to as lightness constancy. The continuum from black to gray to white is the most straightforward way to conceptualize brightness constancy.
- These achromatic lumincances are just the amount of white light that an object reflects. The majority of light is absorbed by black objects, reflected by white objects, and scattered by gray things. When we observe an object, we do so in terms of the percentage of light that it reflects rather than the overall amount of light that it reflects. This is known as lightness constancy.
- In other words, despite significant variations in illumination, a gray item will appear gray. In a well-lit space, a black object stays black, while a white object stays white in a dark space. In this way, brightness constancy fulfills a similar purpose to color constancy by enabling us to see an object's characteristics as being the same under various lighting circumstances.
To learn more about light constancy from the given link
https://brainly.com/question/1175934
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