There is some more information left out which are not related to stereo but depth, which I want to mention before proceeding further.
All the above kinds of depth perception require two images or in other words two eyes, and disparity forms the main cue to perceive depth. Such cues that the brain uses are called binocular cues. There is another category of cues that our brain uses a lot to guess depth in single images, known as monocular cues. Monocular cues are the result of the enormous amount of knowledge our brain has acquired over the years. Monocular cues help us to perceive depth in 2D images. Some links to know more about monocular cues:
All the above kinds of depth perception require two images or in other words two eyes, and disparity forms the main cue to perceive depth. Such cues that the brain uses are called binocular cues. There is another category of cues that our brain uses a lot to guess depth in single images, known as monocular cues. Monocular cues are the result of the enormous amount of knowledge our brain has acquired over the years. Monocular cues help us to perceive depth in 2D images. Some links to know more about monocular cues:
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