71-575: (Redirected from ChaCha ) [REDACTED] Look up cha-cha or chacha in Wiktionary, the free dictionary. Cha-Cha , Cha Cha , ChaCha or Chacha may refer to: Music [ edit ] Cha-cha-cha (dance) , a dance of Cuban origin Cha-cha-cha (music) , a genre of Cuban music Cha Cha (album) , a 1978 album by Herman Brood & His Wild Romance Cha Cha (soundtrack) ,
142-436: A raster image (like a television picture) directly onto the retina of the eye. The user sees what appears to be a conventional display floating in space in front of them. For true stereoscopy, each eye must be provided with its own discrete display. To produce a virtual display that occupies a usefully large visual angle but does not involve the use of relatively large lenses or mirrors, the light source must be very close to
213-421: A "time parallax" for anything side-moving: for instance, someone walking at 3.4 mph will be seen 20% too close or 25% too remote in the most current case of a 2x60 Hz projection. To present stereoscopic pictures, two images are projected superimposed onto the same screen through polarizing filters or presented on a display with polarized filters. For projection, a silver screen is used so that polarization
284-548: A 1979 Dutch cult film Cha Cha Real Smooth , a 2022 American romantic dramedy film Chacha Chaudhary , an Indian comic book hero Chacha, a cartoon Chinese Internet police officer from Jingjing and Chacha Bubu Chacha , a Japanese anime series Akazukin Chacha or Red Riding Hood Chacha, a Japanese manga series created by Min Ayahana Technology [ edit ] ChaCha (search engine) ,
355-426: A 1979 Dutch cult film Cha Cha Real Smooth , a 2022 American romantic dramedy film Chacha Chaudhary , an Indian comic book hero Chacha, a cartoon Chinese Internet police officer from Jingjing and Chacha Bubu Chacha , a Japanese anime series Akazukin Chacha or Red Riding Hood Chacha, a Japanese manga series created by Min Ayahana Technology [ edit ] ChaCha (search engine) ,
426-403: A 3D illusion starting from a pair of 2D images, a stereogram. The easiest way to enhance depth perception in the brain is to provide the eyes of the viewer with two different images, representing two perspectives of the same object, with a minor deviation equal or nearly equal to the perspectives that both eyes naturally receive in binocular vision . To avoid eyestrain and distortion, each of
497-1202: A concubine of Hideyoshi Toyotomi Czarina Marie Guevara (born 1987), also known as DJ Chacha, Filipino actress, journalist and radio disc jockey Shirley Muldowney (born 1940), former top fuel drag racer often referred to by the nickname "Cha Cha" Chacha Cricket (born 1949), famous Pakistani cricket fan, literally "Uncle Cricket" Cha Cha (rapper) , American rapper Chacha Cañete (born 2004), Filipino actress Cha Cha Namdar (born 1956), nickname of Asghar Shadin Namdar, Iranian-American soccer player Cha Cha Malone (born 1987), nickname of Chase Vincent Malone, American entertainer Jose Cha Cha Jimenez (born 1948), American political activist José Rubens Chachá (born 1954), Brazilian actor, author and screenwriter Cha Cha, stage name of Cha Seung-woo (born 1978), South Korean singer and actor Serena ChaCha (born 1990), stagename of Myron Morgan, Panamanian-American drag performer and wig maker History [ edit ] Chacha Empire , Hindu empire which ruled over Sindh Chacha dynasty , Hindu Brahmin dynasty Books and films [ edit ] Cha Cha (film) ,
568-1149: A concubine of Hideyoshi Toyotomi Czarina Marie Guevara (born 1987), also known as DJ Chacha, Filipino actress, journalist and radio disc jockey Shirley Muldowney (born 1940), former top fuel drag racer often referred to by the nickname "Cha Cha" Chacha Cricket (born 1949), famous Pakistani cricket fan, literally "Uncle Cricket" Cha Cha (rapper) , American rapper Chacha Cañete (born 2004), Filipino actress Cha Cha Namdar (born 1956), nickname of Asghar Shadin Namdar, Iranian-American soccer player Cha Cha Malone (born 1987), nickname of Chase Vincent Malone, American entertainer Jose Cha Cha Jimenez (born 1948), American political activist José Rubens Chachá (born 1954), Brazilian actor, author and screenwriter Cha Cha, stage name of Cha Seung-woo (born 1978), South Korean singer and actor Serena ChaCha (born 1990), stagename of Myron Morgan, Panamanian-American drag performer and wig maker History [ edit ] Chacha Empire , Hindu empire which ruled over Sindh Chacha dynasty , Hindu Brahmin dynasty Books and films [ edit ] Cha Cha (film) ,
639-492: A display. Passive viewers filter constant streams of binocular input to the appropriate eye. A shutter system works by openly presenting the image intended for the left eye while blocking the right eye's view, then presenting the right-eye image while blocking the left eye, and repeating this so rapidly that the interruptions do not interfere with the perceived fusion of the two images into a single 3D image. It generally uses liquid crystal shutter glasses. Each eye's glass contains
710-441: A liquid crystal layer which has the property of becoming dark when voltage is applied, being otherwise transparent. The glasses are controlled by a timing signal that allows the glasses to alternately darken over one eye, and then the other, in synchronization with the refresh rate of the screen. The main drawback of active shutters is that most 3D videos and movies were shot with simultaneous left and right views, so that it introduces
781-437: A pair of stereo images which could be viewed using a stereoscope . Most stereoscopic methods present a pair of two-dimensional images to the viewer. The left image is presented to the left eye and the right image is presented to the right eye. When viewed, the human brain perceives the images as a single 3D view, giving the viewer the perception of 3D depth. However, the 3D effect lacks proper focal depth, which gives rise to
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#1732791545806852-705: A popular nickname for proposed amendments to the Constitution of the Philippines Mount Chacha , a mountain in Kunashiri, Japan See also [ edit ] Cha-cha-cha (disambiguation) Chachi (disambiguation) Chacha Chaudhary (disambiguation) , the Indian comic and its adaptations Chachas District , Areuipa, Peru Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
923-457: A popular nickname for proposed amendments to the Constitution of the Philippines Mount Chacha , a mountain in Kunashiri, Japan See also [ edit ] Cha-cha-cha (disambiguation) Chachi (disambiguation) Chacha Chaudhary (disambiguation) , the Indian comic and its adaptations Chachas District , Areuipa, Peru Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
994-478: A search engine with a guided search function ChaCha (cipher) , a stream cipher HTC ChaCha , a smartphone by HTC Cha-Cha, a method of creating stereo images by moving one camera along a sliding baseline; see Stereoscopy Other uses [ edit ] Chacha language , the name sometimes given to the language of the Chachapoya people Chacha (brandy) , a Georgian grape vodka Charter Change,
1065-419: A search engine with a guided search function ChaCha (cipher) , a stream cipher HTC ChaCha , a smartphone by HTC Cha-Cha, a method of creating stereo images by moving one camera along a sliding baseline; see Stereoscopy Other uses [ edit ] Chacha language , the name sometimes given to the language of the Chachapoya people Chacha (brandy) , a Georgian grape vodka Charter Change,
1136-409: A side-by-side image pair without using a viewing device. Two methods are available to freeview: Prismatic, self-masking glasses are now being used by some cross-eyed-view advocates. These reduce the degree of convergence required and allow large images to be displayed. However, any viewing aid that uses prisms, mirrors or lenses to assist fusion or focus is simply a type of stereoscope, excluded by
1207-457: A volume. Such displays use voxels instead of pixels . Volumetric displays include multiplanar displays, which have multiple display planes stacked up, and rotating panel displays, where a rotating panel sweeps out a volume. Other technologies have been developed to project light dots in the air above a device. An infrared laser is focused on the destination in space, generating a small bubble of plasma which emits visible light. Integral imaging
1278-650: A window. Unfortunately, this "pure" form requires the subject to be laser-lit and completely motionless—to within a minor fraction of the wavelength of light—during the photographic exposure, and laser light must be used to properly view the results. Most people have never seen a laser-lit transmission hologram. The types of holograms commonly encountered have seriously compromised image quality so that ordinary white light can be used for viewing, and non-holographic intermediate imaging processes are almost always resorted to, as an alternative to using powerful and hazardous pulsed lasers, when living subjects are photographed. Although
1349-404: Is a single-image stereogram (SIS), designed to create the visual illusion of a three- dimensional ( 3D ) scene within the human brain from an external two-dimensional image. In order to perceive 3D shapes in these autostereograms, one must overcome the normally automatic coordination between focusing and vergence . The stereoscope is essentially an instrument in which two photographs of
1420-452: Is a technique for producing 3D displays which are both autostereoscopic and multiscopic , meaning that the 3D image is viewed without the use of special glasses and different aspects are seen when it is viewed from positions that differ either horizontally or vertically. This is achieved by using an array of microlenses (akin to a lenticular lens , but an X–Y or "fly's eye" array in which each lenslet typically forms its own image of
1491-513: Is achieved. This technique uses specific wavelengths of red, green, and blue for the right eye, and different wavelengths of red, green, and blue for the left eye. Eyeglasses which filter out the very specific wavelengths allow the wearer to see a full color 3D image. It is also known as spectral comb filtering or wavelength multiplex visualization or super-anaglyph . Dolby 3D uses this principle. The Omega 3D/ Panavision 3D system has also used an improved version of this technology In June 2012
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#17327915458061562-449: Is based on the fact that with a prism, colors are separated by varying degrees. The ChromaDepth eyeglasses contain special view foils, which consist of microscopically small prisms. This causes the image to be translated a certain amount that depends on its color. If one uses a prism foil now with one eye but not on the other eye, then the two seen pictures – depending upon color – are more or less widely separated. The brain produces
1633-692: Is based on the phenomenon of the human eye processing images more slowly when there is less light, as when looking through a dark lens. Because the Pulfrich effect depends on motion in a particular direction to instigate the illusion of depth, it is not useful as a general stereoscopic technique. For example, it cannot be used to show a stationary object apparently extending into or out of the screen; similarly, objects moving vertically will not be seen as moving in depth. Incidental movement of objects will create spurious artifacts, and these incidental effects will be seen as artificial depth not related to actual depth in
1704-409: Is limited by the lesser of the display medium or human eye. This is because as the dimensions of an image are increased, either the viewing apparatus or viewer themselves must move proportionately further away from it in order to view it comfortably. Moving closer to an image in order to see more detail would only be possible with viewing equipment that adjusted to the difference. Freeviewing is viewing
1775-456: Is more cumbersome than the common misnomer "3D", which has been entrenched by many decades of unquestioned misuse. Although most stereoscopic displays do not qualify as real 3D display, all real 3D displays are also stereoscopic displays because they meet the lower criteria also. Most 3D displays use this stereoscopic method to convey images. It was first invented by Sir Charles Wheatstone in 1838, and improved by Sir David Brewster who made
1846-402: Is preserved. On most passive displays every other row of pixels is polarized for one eye or the other. This method is also known as being interlaced. The viewer wears low-cost eyeglasses which also contain a pair of opposite polarizing filters. As each filter only passes light which is similarly polarized and blocks the opposite polarized light, each eye only sees one of the images, and the effect
1917-431: Is that, in the case of "3D" displays, the observer's head and eye movement do not change the information received about the 3-dimensional objects being viewed. Holographic displays and volumetric display do not have this limitation. Just as it is not possible to recreate a full 3-dimensional sound field with just two stereophonic speakers, it is an overstatement to call dual 2D images "3D". The accurate term "stereoscopic"
1988-404: Is useful in viewing images rendered from large multi- dimensional data sets such as are produced by experimental data. Modern industrial three-dimensional photography may use 3D scanners to detect and record three-dimensional information. The three-dimensional depth information can be reconstructed from two images using a computer by correlating the pixels in the left and right images. Solving
2059-435: Is visible from a different range of positions in front of the display. This allows the viewer to move left-right in front of the display and see the correct view from any position. The technology includes two broad classes of displays: those that use head-tracking to ensure that each of the viewer's two eyes sees a different image on the screen, and those that display multiple views so that the display does not need to know where
2130-404: Is visually indistinguishable from the original, given the original lighting conditions. It creates a light field identical to that which emanated from the original scene, with parallax about all axes and a very wide viewing angle. The eye differentially focuses objects at different distances and subject detail is preserved down to the microscopic level. The effect is exactly like looking through
2201-506: The Correspondence problem in the field of Computer Vision aims to create meaningful depth information from two images. Anatomically, there are 3 levels of binocular vision required to view stereo images: These functions develop in early childhood. Some people who have strabismus disrupt the development of stereopsis, however orthoptics treatment can be used to improve binocular vision . A person's stereoacuity determines
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2272-467: The Stereo Realist format, introduced in 1947, is by far the most common. The user typically wears a helmet or glasses with two small LCD or OLED displays with magnifying lenses, one for each eye. The technology can be used to show stereo films, images or games, but it can also be used to create a virtual display. Head-mounted displays may also be coupled with head-tracking devices, allowing
2343-478: The Vergence-accommodation conflict . Stereoscopy is distinguished from other types of 3D displays that display an image in three full dimensions , allowing the observer to increase information about the 3-dimensional objects being displayed by head and eye movements . Stereoscopy creates the impression of three-dimensional depth from a pair of two-dimensional images. Human vision, including
2414-569: The Omega 3D/Panavision 3D system was discontinued by DPVO Theatrical, who marketed it on behalf of Panavision, citing "challenging global economic and 3D market conditions". Anaglyph 3D is the name given to the stereoscopic 3D effect achieved by means of encoding each eye's image using filters of different (usually chromatically opposite) colors, typically red and cyan . Red-cyan filters can be used because our vision processing systems use red and cyan comparisons, as well as blue and yellow, to determine
2485-415: The brain uses to gauge relative distances and depth in a perceived scene include: (All but the first two of the above cues exist in traditional two-dimensional images, such as paintings, photographs, and television.) Stereoscopy is the production of the impression of depth in a photograph , movie , or other two-dimensional image by the presentation of a slightly different image to each eye , which adds
2556-421: The color and contours of objects. Anaglyph 3D images contain two differently filtered colored images, one for each eye. When viewed through the "color-coded" "anaglyph glasses", each of the two images reaches one eye, revealing an integrated stereoscopic image. The visual cortex of the brain fuses this into perception of a three dimensional scene or composition. The ChromaDepth procedure of American Paper Optics
2627-404: The continuing miniaturization of video and other equipment these devices are beginning to become available at more reasonable cost. Head-mounted or wearable glasses may be used to view a see-through image imposed upon the real world view, creating what is called augmented reality . This is done by reflecting the video images through partially reflective mirrors. The real world view is seen through
2698-612: The customary definition of freeviewing. Stereoscopically fusing two separate images without the aid of mirrors or prisms while simultaneously keeping them in sharp focus without the aid of suitable viewing lenses inevitably requires an unnatural combination of eye vergence and accommodation . Simple freeviewing therefore cannot accurately reproduce the physiological depth cues of the real-world viewing experience. Different individuals may experience differing degrees of ease and comfort in achieving fusion and good focus, as well as differing tendencies to eye fatigue or strain. An autostereogram
2769-433: The display, rather than worn by the user, to enable each eye to see a different image. Because headgear is not required, it is also called "glasses-free 3D". The optics split the images directionally into the viewer's eyes, so the display viewing geometry requires limited head positions that will achieve the stereoscopic effect. Automultiscopic displays provide multiple views of the same scene, rather than just two. Each view
2840-515: The earliest stereoscope views, issued in the 1850s, were on glass. In the early 20th century, 45x107 mm and 6x13 cm glass slides were common formats for amateur stereo photography, especially in Europe. In later years, several film-based formats were in use. The best-known formats for commercially issued stereo views on film are Tru-Vue , introduced in 1931, and View-Master , introduced in 1939 and still in production. For amateur stereo slides,
2911-470: The effect was wholly or in part due to these circumstances, whereas by leaving them out of consideration no room is left to doubt that the entire effect of relief is owing to the simultaneous perception of the two monocular projections, one on each retina. But if it be required to obtain the most faithful resemblances of real objects, shadowing and colouring may properly be employed to heighten the effects. Careful attention would enable an artist to draw and paint
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2982-521: The eye. A contact lens incorporating one or more semiconductor light sources is the form most commonly proposed. As of 2013, the inclusion of suitable light-beam-scanning means in a contact lens is still very problematic, as is the alternative of embedding a reasonably transparent array of hundreds of thousands (or millions, for HD resolution) of accurately aligned sources of collimated light. There are two categories of 3D viewer technology, active and passive. Active viewers have electronics which interact with
3053-431: The first of these cues ( stereopsis ). The two images are then combined in the brain to give the perception of depth. Because all points in the image produced by stereoscopy focus at the same plane regardless of their depth in the original scene, the second cue, focus, is not duplicated and therefore the illusion of depth is incomplete. There are also mainly two effects of stereoscopy that are unnatural for human vision: (1)
3124-404: The first portable 3D viewing device. Wheatstone originally used his stereoscope (a rather bulky device) with drawings because photography was not yet available, yet his original paper seems to foresee the development of a realistic imaging method: For the purposes of illustration I have employed only outline figures, for had either shading or colouring been introduced it might be supposed that
3195-445: The 💕 (Redirected from Cha-cha ) [REDACTED] Look up cha-cha or chacha in Wiktionary, the free dictionary. Cha-Cha , Cha Cha , ChaCha or Chacha may refer to: Music [ edit ] Cha-cha-cha (dance) , a dance of Cuban origin Cha-cha-cha (music) , a genre of Cuban music Cha Cha (album) , a 1978 album by Herman Brood & His Wild Romance Cha Cha (soundtrack) ,
3266-568: The generation of two images. Wiggle stereoscopy is an image display technique achieved by quickly alternating display of left and right sides of a stereogram. Found in animated GIF format on the web, online examples are visible in the New-York Public Library stereogram collection Archived 25 May 2022 at the Wayback Machine . The technique is also known as "Piku-Piku". For general-purpose stereo photography, where
3337-432: The goal is to duplicate natural human vision and give a visual impression as close as possible to actually being there, the correct baseline (distance between where the right and left images are taken) would be the same as the distance between the eyes. When images taken with such a baseline are viewed using a viewing method that duplicates the conditions under which the picture is taken, then the result would be an image much
3408-491: The huge bandwidth required to transmit a stream of them, have confined this technology to the research laboratory. In 2013, a Silicon Valley company, LEIA Inc , started manufacturing holographic displays well suited for mobile devices (watches, smartphones or tablets) using a multi-directional backlight and allowing a wide full- parallax angle view to see 3D content without the need of glasses. Volumetric displays use some physical mechanism to display points of light within
3479-463: The minimum image disparity they can perceive as depth. It is believed that approximately 12% of people are unable to properly see 3D images, due to a variety of medical conditions. According to another experiment up to 30% of people have very weak stereoscopic vision preventing them from depth perception based on stereo disparity. This nullifies or greatly decreases immersion effects of stereo to them. Stereoscopic viewing may be artificially created by
3550-518: The mirrors' reflective surface. Experimental systems have been used for gaming, where virtual opponents may peek from real windows as a player moves about. This type of system is expected to have wide application in the maintenance of complex systems, as it can give a technician what is effectively "x-ray vision" by combining computer graphics rendering of hidden elements with the technician's natural vision. Additionally, technical data and schematic diagrams may be delivered to this same equipment, eliminating
3621-495: The mismatch between convergence and accommodation, caused by the difference between an object's perceived position in front of or behind the display or screen and the real origin of that light; and (2) possible crosstalk between the eyes, caused by imperfect image separation in some methods of stereoscopy. Although the term "3D" is ubiquitously used, the presentation of dual 2D images is distinctly different from displaying an image in three full dimensions . The most notable difference
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#17327915458063692-428: The need to obtain and carry bulky paper documents. Augmented stereoscopic vision is also expected to have applications in surgery, as it allows the combination of radiographic data ( CAT scans and MRI imaging) with the surgeon's vision. A virtual retinal display (VRD), also known as a retinal scan display (RSD) or retinal projector (RP), not to be confused with a " Retina Display ", is a display technology that draws
3763-420: The original photographic processes have proven impractical for general use, the combination of computer-generated holograms (CGH) and optoelectronic holographic displays, both under development for many years, has the potential to transform the half-century-old pipe dream of holographic 3D television into a reality; so far, however, the large amount of calculation required to generate just one detailed hologram, and
3834-433: The perception of depth, is a complex process, which only begins with the acquisition of visual information taken in through the eyes; much processing ensues within the brain, as it strives to make sense of the raw information. One of the functions that occur within the brain as it interprets what the eyes see is assessing the relative distances of objects from the viewer, and the depth dimension of those objects. The cues that
3905-443: The pictures Stereoscopy (also called stereoscopics , or stereo imaging ) is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision . The word stereoscopy derives from Greek στερεός (stereos) 'firm, solid' and σκοπέω (skopeō) 'to look, to see'. Any stereoscopic image is called a stereogram . Originally, stereogram referred to
3976-403: The point of view chosen rather than actual physical separation of cameras or lenses. The concept of the stereo window is always important, since the window is the stereoscopic image of the external boundaries of left and right views constituting the stereoscopic image. If any object, which is cut off by lateral sides of the window, is placed in front of it, an effect results that is unnatural and
4047-415: The presentation of images at very high resolution and in full spectrum color, simplicity in creation, and little or no additional image processing is required. Under some circumstances, such as when a pair of images is presented for freeviewing, no device or additional optical equipment is needed. The principal disadvantage of side-by-side viewers is that large image displays are not practical and resolution
4118-462: The same as that which would be seen at the site the photo was taken. This could be described as "ortho stereo." However, there are situations in which it might be desirable to use a longer or shorter baseline. The factors to consider include the viewing method to be used and the goal in taking the picture. The concept of baseline also applies to other branches of stereography, such as stereo drawings and computer generated stereo images , but it involves
4189-604: The same object, taken from slightly different angles, are simultaneously presented, one to each eye. A simple stereoscope is limited in the size of the image that may be used. A more complex stereoscope uses a pair of horizontal periscope -like devices, allowing the use of larger images that can present more detailed information in a wider field of view. One can buy historical stereoscopes such as Holmes stereoscopes as antiques. Some stereoscopes are designed for viewing transparent photographs on film or glass, known as transparencies or diapositives and commonly called slides . Some of
4260-401: The scene without assistance from a larger objective lens ) or pinholes to capture and display the scene as a 4D light field , producing stereoscopic images that exhibit realistic alterations of parallax and perspective when the viewer moves left, right, up, down, closer, or farther away. Integral imaging may not technically be a type of autostereoscopy, as autostereoscopy still refers to
4331-556: The scene. Stereoscopic viewing is achieved by placing an image pair one above one another. Special viewers are made for over/under format that tilt the right eyesight slightly up and the left eyesight slightly down. The most common one with mirrors is the View Magic. Another with prismatic glasses is the KMQ viewer . A recent usage of this technique is the openKMQ project. Autostereoscopic display technologies use optical components in
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#17327915458064402-420: The soundtrack for the 1979 film Cha Cha Real Smooth (EP) , the film score from the 2022 film " Cha Cha Slide ", a 2000 dance song by DJ Casper "Cha Cha" (song) , a 2006 song by Latin artist, Chelo Cha Cha Cohen , 1990s band name People [ edit ] Jawaharlal Nehru (1889–1964), or Chacha Nehru, as he was known among the children. Yodo-dono (1569–1615), also known as Lady Chacha,
4473-420: The soundtrack for the 1979 film Cha Cha Real Smooth (EP) , the film score from the 2022 film " Cha Cha Slide ", a 2000 dance song by DJ Casper "Cha Cha" (song) , a 2006 song by Latin artist, Chelo Cha Cha Cohen , 1990s band name People [ edit ] Jawaharlal Nehru (1889–1964), or Chacha Nehru, as he was known among the children. Yodo-dono (1569–1615), also known as Lady Chacha,
4544-461: The spatial impression from this difference. The advantage of this technology consists above all of the fact that one can regard ChromaDepth pictures also without eyeglasses (thus two-dimensional) problem-free (unlike with two-color anaglyph). However the colors are only limitedly selectable, since they contain the depth information of the picture. If one changes the color of an object, then its observed distance will also be changed. The Pulfrich effect
4615-455: The title Cha-Cha . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Cha-Cha&oldid=1246596188 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages cha-cha From Misplaced Pages,
4686-447: The title Cha-Cha . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Cha-Cha&oldid=1246596188 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Stereoscopy#Taking
4757-437: The two 2D images should be presented to the viewer so that any object at infinite distance is perceived by the eye as being straight ahead, the viewer's eyes being neither crossed nor diverging. When the picture contains no object at infinite distance, such as a horizon or a cloud, the pictures should be spaced correspondingly closer together. The advantages of side-by-side viewers is the lack of diminution of brightness, allowing
4828-439: The two component pictures, so as to present to the mind of the observer, in the resultant perception, perfect identity with the object represented. Flowers, crystals, busts, vases, instruments of various kinds, &c., might thus be represented so as not to be distinguished by sight from the real objects themselves. Stereoscopy is used in photogrammetry and also for entertainment through the production of stereograms. Stereoscopy
4899-430: The user to "look around" the virtual world by moving their head, eliminating the need for a separate controller. Performing this update quickly enough to avoid inducing nausea in the user requires a great amount of computer image processing. If six axis position sensing (direction and position) is used then wearer may move about within the limitations of the equipment used. Owing to rapid advancements in computer graphics and
4970-481: The viewer's brain, as demonstrated with the Van Hare Effect , where the brain perceives stereo images even when the paired photographs are identical. This "false dimensionality" results from the developed stereoacuity in the brain, allowing the viewer to fill in depth information even when few if any 3D cues are actually available in the paired images. Traditional stereoscopic photography consists of creating
5041-408: The viewers' eyes are directed. Examples of autostereoscopic displays technology include lenticular lens , parallax barrier , volumetric display , holography and light field displays. Laser holography, in its original "pure" form of the photographic transmission hologram , is the only technology yet created which can reproduce an object or scene with such complete realism that the reproduction
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