What Is Depth Perception?

Depth perception, also known as "stereo perception" or "distance perception." Perception of the three-dimensional object or the distance of different objects. The retina can only accept two-dimensional space stimulation, and the reflection on three-dimensional space mainly depends on binocular vision. In individual development, because of the strong connection formed between vision and touch, based on experience, you can use only one eye to determine the distance of an object with various clues. The main clues to the perception of depth are: binocular parallax, binocular convergence, adjustment of the crystalline lens, object overlap, line perspective, air perspective, motion parallax, object brightness, etc. The first two types only work for binocular vision, and the last six types work for both monocular and binocular vision. ^[1]

Also known as distance perception or stereo perception. It is the individual's reflection of the same object's unevenness or the distance of different objects. The retina is a two-dimensional plane. People can perceive not only planar objects, but also objects in three-dimensional space. Depth perception is achieved through binocular vision. Depth perception is affected by the following factors. Physiological aspects are: binocular parallax, binocular convergence, lens adjustment, and parallax of movement. Objects include: object overlap, line perspective, air perspective, object's texture gradient, light and shade, and the size of familiar objects. According to one's own experience and relevant clues, observing an object with one eye alone can also produce depth perception. Using vision to perceive depth is based on the connection formed between vision and touch in the process of individual development. Judgment of depth and distance can be made through integrated brain activity. However, when individuals perceive the spatial relationship of objects, they are not fully aware of the effects of the above-mentioned subjective and objective conditions. ^[2]

Well-known visual cliff experiments show that babies who have just climbed already have a good sense of depth. ^[4] Domestic Guo Jingqiu and others studied the stereoscopic sharpness of normal 3 to 12-year-old children, and believed that the stereoscopic mature period was before 3 years old. Some children are born with a lack of deep perception

Deep perception

Depression, such as children with intermittent exotropia, has good short-range stereopsis, poor mid- and long-distance stereopsis, and will be greatly improved after early surgery. Checking stereopsis at different distances separately is an important indicator of investigation. Other scholars' research results show that children with learning disabilities (LD) lack the ability to use clues in deep perception and have a potential relationship with emotional judgments, further proving that Johnson et al. [5] mentioned that simple perception judgments can often reflect deep complex societies. Perceptual ability paves the way for the application of deep perception in cognition.

In industries where high-speed sports require sound stereo vision, sports athletes are self-evident. In the selection and training of athletes, the past traditional experience methods and the evaluation of talent selection organizations and coaches are of course indispensable, but the application of modern science and technology, scientific talent selection methods, and inspection of stereo vision are also essential. Balls, fencing, diving, shooting, gymnastics and other items more prominently require relatively good stereo vision than relatively static chess, weightlifters, and if the stereotypes are not checked for newly selected training objects, they are likely to be missed. People with abnormal stereo vision will cause double waste. Studies have shown that training that emphasizes the individual's deep perception ability can effectively improve the effectiveness of ball teaching and training. Some researchers have made suggestions on the training of the depth perception accuracy of football referees. Others have suggested that based on the results of their research, when selecting basketball players, test their deep visual threshold.

Depth perception is also widely used in many occupations that require high visual attention. For example, the driver's perception of visual depth is significantly positively related to safe driving conditions; the perception of depth has good discrimination for seafarers; the measurement of the visual threshold of different color depths under dynamic conditions is a problem worthy of further research; the stereoscopic vision of military personnel Functional status is good; stereo vision when enlisted

Deep perception

Obvious inspection is necessary to ensure the quality of the troops.

The application of deep perception in computers has been very common, such as artificial intelligence, 3D interface, and so on. In the decades of development, computer stereo vision has formed its own methods and theories.