size constancy meaning in Hindi

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This second ability, to judge absolute size by estimating distance, is known as size constancy.
This is what is called the size constancy mechanism.
But the brain takes that same image and makes all sorts of so-called size constancy corrections so that the person does not look distorted.
The most studied constancy is the size constancy, or the phenomenon as when we perceive the constant size of the objects independently to their distance.
Then the size constancy mechanism would make us see an erroneous length of the object which, for a true perspective drawing, would be farther away.
Emmert's law is closely related to size constancy, and has been used to investigate the moon illusion ( the apparent enlargement of the moon or sun near the horizon compared with higher in the sky ).
A recent neuroimaging study that examined brain activation when participants viewed afterimages on surfaces placed at different distances found evidence supporting Emmert's Law and thus size constancy played out in primary visual cortex ( V1 ); i . e . the larger the perceived size of the afterimage, the larger the retinotopic activation in V1.

noun.

the tendency to perceive the veridical size of a familiar object despite differences in their distance (and consequent differences in the size of the pattern projected on the retina of the eye)