By Ian P. Howard
ISBN-10: 0195084764
ISBN-13: 9780195084764
ISBN-10: 1435618645
ISBN-13: 9781435618640
This booklet is a survey of information approximately binocular imaginative and prescient, with an emphasis on its position within the conception of a 3-dimensional international. the first curiosity is organic imaginative and prescient. In each one bankruptcy, physiological, behavioral, and computational ways are reviewed in a few aspect, mentioned, and interrelated. The authors describe experiments required to reply to particular questions and relates them to new terminologies and present theoretical schemes.
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Additional info for Binocular Vision and Stereopsis (Oxford Psychology Series)
Sample text
Autostereogram drafted by Masayuki Ito in 1970. An array of squares is produced when the eyes misconverge on the vertical display and an array of rectangles when the display is rotated 90°. 16. Autostereogram drawn by Alfons Schilling in 1977. Recessed and elevated rectangles are seen when the two dots are fused. ) the dot-pattern spacing, disparate regions are visible in each image and differential dot densities provide a monocular cue to depth. In a truly cyclopean random-dot autostereogram extra dots are added and subtracted from a repeating random-dot sequence, keeping the spacing constant.
Thus, inputs from the two eyes with similar local signs are brought together. Collateral branches of optic-tract axons go to the superior colliculus, the pretectum by way of the accessory optic tract, and other subcortical areas. Each optic tract leaves the chiasma and terminates on its own side in a part of the thalamus known as the lateral geniculate nucleus (LGN). Within each LGN inputs from the two eyes remain in distinct layers, or laminae, where they synapse with relay cells. 2. The visual pathways.
Each nerve has a diameter of 3 to 4 mm and contains about one and a quarter million axons. After passing out of the retina at the optic disc, the optic nerve travels about 5 cm to end in the optic chiasma. In primates and many other mammals, axons from the nasal hemiretinas decussate at the chiasma, that is, they cross over to the other side. The word "decussate" comes from the Latin decussare, meaning to divide in the form of a cross. Thus axons from the temporal half of the left eye join decussated axons from the nasal half of the right eye to form the left optic tract, and axons from the temporal half of the right eye join decussated axons from the nasal half of the left eye to form the right optic tract.
Binocular Vision and Stereopsis (Oxford Psychology Series) by Ian P. Howard
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