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Vision | A Wisdom Archive on Vision |  | Vision A selection of articles related to Vision |  |
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vision, Vision
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| ARTICLES RELATED TO Vision | | | | | | | | | |  |  |  | Vision: Encyclopedia - Computer vision syndromeComputer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer display for protacted, uninterrupted periods of time. Some symptoms of CVS include headaches, blurred vision, neck pain, fatigue, eye strain, dry, irritated eyes, and difficulty refocusing the eyes.
One may be able to mitigate the risk of CVS by adhering to the "20-20-20 rule": every 20 minutes, focus the eyes on an object 20 feet away for 20 seconds. Also, the use of over-the-counter artificial tea ...
Read more here: » Computer vision syndrome: Encyclopedia - Computer vision syndrome |
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| | | |  |  |  | Vision: Encyclopedia II - Night vision - Thermal visionFar infrared, or thermal, sensing is generally not considered night vision because it is constructed with mechanisms substantially different from the methods used to sense visible light. It is possible to construct an imaging device with microwave energy, sound, or any other signal that is reflected or radiated by objects and can be focused and sensed, but these are also not generally considered night-vision.
Some organisms have the ability to sense far infrared energy which we perceive as heat. This is prevalent in some snakes such a ...
See also:Night vision, Night vision - Enhanced spectral range, Night vision - Enhanced intensity range, Night vision - Biological night vision, Night vision - Thermal vision, Night vision - Image intensifier, Night vision - Night vision goggles, Night vision - Patents Read more here: » Night vision: Encyclopedia II - Night vision - Thermal vision |
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|  |  |  | Vision: Encyclopedia II - Binocular vision - Singleness of visionOnce the fields of view overlap, there is a potential for confusion between the left and right eye's image of the same object. This can be dealt with in two ways: one image can be suppressed, so that only the other is seen, or the two images can be fused. If two images of a single object are seen, this is known as double vision or diplopia. Fusion of the images from the two eyes is considered to be separate from stereopsis for at least two reasons. First, some disorders of binocular vision, such as strabismus can spare fusion but abolish ste ...
See also:Binocular vision, Binocular vision - Fields of view and eye movements, Binocular vision - Binocular summation, Binocular vision - Binocular interaction, Binocular vision - Utrocular discrimination, Binocular vision - Singleness of vision, Binocular vision - Eye dominance, Binocular vision - Stereopsis, Binocular vision - Allelotropia, Binocular vision - Binocular rivalry, Binocular vision - Disorders of binocular vision, Binocular vision - Rembrandt as a person without binocular vision Read more here: » Binocular vision: Encyclopedia II - Binocular vision - Singleness of vision |
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|  |  |  | Vision: Encyclopedia II - Binocular vision - Disorders of binocular visionTo maintain stereopsis and singleness of vision, the eyes need to be pointed accurately. The position of each eye in its orbit is controlled by six extraocular muscles. Slight differences in the length or insertion position or strength of the same muscles in the two eyes can lead to a tendency for one eye to drift to a different position in its orbit from the other, especially when one is tired. This is known as phoria. One way to reveal it is with the cover-uncover test. To do this test, look at a cooperative person's eyes. Cover one eye of ...
See also:Binocular vision, Binocular vision - Fields of view and eye movements, Binocular vision - Binocular summation, Binocular vision - Binocular interaction, Binocular vision - Utrocular discrimination, Binocular vision - Singleness of vision, Binocular vision - Eye dominance, Binocular vision - Stereopsis, Binocular vision - Allelotropia, Binocular vision - Binocular rivalry, Binocular vision - Disorders of binocular vision, Binocular vision - Rembrandt as a person without binocular vision Read more here: » Binocular vision: Encyclopedia II - Binocular vision - Disorders of binocular vision |
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|  |  |  | Vision: Encyclopedia II - Night vision - Biological night visionIn biological night vision, rhodopsin in the rods of the eye breaks as light hits it. The peak rhodopsin build-up time for optimal night vision in humans is 30 minutes. Rhodopsin in the human rods is insensitive to the longer red wavelengths of light, so many people use red light to preserve night vision as it will not deplete the eye's rhodopsin stores in the rods and instead is viewed by the cones.
Some animals, such as cats, dogs, and deer, have a structure called the tapetum in the back of the eye that reflects light for even bett ...
See also:Night vision, Night vision - Enhanced spectral range, Night vision - Enhanced intensity range, Night vision - Biological night vision, Night vision - Thermal vision, Night vision - Image intensifier, Night vision - Night vision goggles, Night vision - Patents Read more here: » Night vision: Encyclopedia II - Night vision - Biological night vision |
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|  |  |  | Vision: Encyclopedia II - Computer vision - Computer Vision SystemsA typical computer vision system can be divided in the following subsystems:
Computer vision - Image acquisition.
The image or image sequence is acquired with a imaging system (camera,radar,lidar,tomography system). Often the imaging system has to be calibrated before being used.
Computer vision - Preprocessing.
In the preprocessing step, the image is being treated with "low-level"-operations. The aim of this step is to do noise reduction on the image (i.e. to dissociate ...
See also:Computer vision, Computer vision - State of the art, Computer vision - Examples of applications for computer vision, Computer vision - Typical tasks of computer vision, Computer vision - Object Recognition, Computer vision - Optical Character Recognition, Computer vision - Tracking, Computer vision - Scene interpretation, Computer vision - Egomotion, Computer vision - Computer Vision Systems, Computer vision - Image acquisition, Computer vision - Preprocessing, Computer vision - Feature extraction, Computer vision - Registration, Computer vision - Related Fields, Computer vision - A University Video Communication on Model-Based Computer Vision, Computer vision - Applications Read more here: » Computer vision: Encyclopedia II - Computer vision - Computer Vision Systems |
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| |  |  |  | Vision: Encyclopedia II - Vision Serpent - The Vision Serpent and Maya ReligionThere was a Vision Serpent named Och-Kan, lord of Kalak'mul.
One of the most common rituals associated with the Vision serpent involved invoking ancestral sprits. Especially during coronation rites, the kings would contact the spirits for guidance and blessings. It is the Vision Serpent who provides the medium for contacting these deities.
It is believed that Lord Pacal's sarcophagus lid, which was located at Palenque, is probably “the single most comprehensive image which relates the Vision Serpent to Maya religion”. It de ...
See also:Vision Serpent, Vision Serpent - The Maya Vision Serpent and Bloodletting, Vision Serpent - The Vision Serpent and Maya Religion, Vision Serpent - Vision Serpent and Maya jewelry and pottery, Vision Serpent - Vision Serpent and Mayan architecture, Vision Serpent - Vision Serpent today, Vision Serpent - Bibliography Read more here: » Vision Serpent: Encyclopedia II - Vision Serpent - The Vision Serpent and Maya Religion |
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|  |  |  | Vision: Encyclopedia II - Computer vision - ApplicationsIn the related fields machine vision and medical imaging, systems using computer vision techniques are sold in markets worth billions of US dollars per year.
One interesting application of computer vision, commonly used in the creation of visual effects for cinema and broadcast, is camera tracking or matchmoving. Computer vision also finds its applications in medicine, military industry, security and surveillance, quality inspection, robo ...
See also:Computer vision, Computer vision - State of the art, Computer vision - Examples of applications for computer vision, Computer vision - Typical tasks of computer vision, Computer vision - Object Recognition, Computer vision - Optical Character Recognition, Computer vision - Tracking, Computer vision - Scene interpretation, Computer vision - Egomotion, Computer vision - Computer Vision Systems, Computer vision - Image acquisition, Computer vision - Preprocessing, Computer vision - Feature extraction, Computer vision - Registration, Computer vision - Related Fields, Computer vision - A University Video Communication on Model-Based Computer Vision, Computer vision - Applications Read more here: » Computer vision: Encyclopedia II - Computer vision - Applications |
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