Contrast refers to the discrepancy in brightness or color
that allows an object to stand out from its surroundings or be easily
discernible in an image or display. When perceiving the physical world
visually, contrast is influenced by variations in color and brightness between
the object of interest and other objects within the same visual field. The
human visual system exhibits a greater sensitivity to contrast rather than
absolute luminance, enabling us to perceive the world consistently despite
significant variations in illumination throughout the day or across different
locations.
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