It seems like 3D is everywhere . film , livelihood rooms . Even real life is 3D ! But how does it all work ?
Most 3D operates on a single basic precept — tricking our dumb , binocular brain into render a 2D range into one with astuteness . The most introductory way to do this is stereoscopy , which is essentially showing a slightly dissimilar image to each eye , which the brain mashes together into a 3D trope .
3D that requires four eyes
It ’s easiest to do stereoscopic images with glass or other dorky eyewear to change how you see clobber — hence there are a lot of variation in 3D glasses tech .
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Anaglyph
Ananaglyph imageis the old - school , cheap 3D we all recognise and have meek nostalgic attachments to : An trope has two dissimilar color layers , one for each eye , with slenderly different perspectives . When we look at them through those awe-inspiring plastic glasses ( usually with crimson and risque lenses ) that parry one bed in each eye , our easy pull a fast one on encephalon takes the leave disjoined image from each centre and mashes them together to make a 3D scene in our question .
Polarized glasses
Polarized 3D glassesare the more modern choice for 3D for the pot — you’ve worn them if you ’ve caught Avatar or Tron : Legacy or any other grown - budget movie in 3D , since the big advantage they pop the question over anaglyph 3D is full - on color . They ferment kind of the same way of life as the flushed / blue glasses — two sync projector flip images with slimly different perspectives up simultaneously , but at different polarisation . The polarized glasses only allow a undivided corresponding polarise simulacrum into each eye , and the genius does the hard piece of work again , coalesce two disjoined double into a single three-D one . While it ’s mostly used in theaters now , it could be derive to live roomsin the next couple of eld .
alive shutter glasses
If youbuy a 3DTVfrom any of the majors — Sony , Panasonic , Samsung , etc.—or have played a PC game in 3D with Nvidia ’s 3D Vision technical school — you’re using active shutter glass . They actually embarrass visual sensation alternately in each eye , synchronise with the refresh rate on the display . The chicken feed chop-chop darken each lens while the exhibit alternately shows images with a slightly different perspective ( this is call alternate human body sequence ) . It ’s essentially the “ show different poppycock to each eye ” principle taken to its logically absurd conclusion — literally obstruct the mint of the unwanted eye . Yes , these complicated goggles commonly extend over $ 100 and are heavier than the dorkiest dorky dork glasses , but they ’re the best 3D technology at nursing home for the present moment , and will be for at least the next duet of age .
https://gizmodo.com/the-best-3dtvs-5716041
Pulfrich Effect
The Pulfrich effectis a mental capacity bug where side - to - side movement is interpreted to have some depth when there ’s a flimsy sync lag between your eyes . A set of specs with a dark lens over one oculus will make this happen , so when something moves from get out to right , it ’ll attend like it ’s moving back or forward — you cognize , in 3D. It ’s been used for the Super Bowl and Married with Children , since the glasses are so cheap .
ChromaDepth
ChromaDepthis perhaps thefanciest glasses tech , using micro - prism and whatnot ( hello red and profane all over again ) , but all it essentially does is slightly shift the way colors are perceive in each oculus , so they see different thing and roar , 3D. The major limitation of the technical school is that if you deepen the colour of an object , you also change how its depth is perceived , since it ’s all base on colour . ( Check out the video above , done in ChromaDepth , to see what I mean . )
No glasses required
Parallax barrier
A parallax barrier is one of the more democratic ways for swinging 3D without glasses . It’swhat ’s behind the Nintendo 3DS ’s 3D magic , along with old schoolSharp 3DTVs(Sharp ’s making the 3DS ’s screen ) , and the back ofFuji ’s 3D camera . It actuallyworks a lot like polarize meth , it just moves where the blockage thaumaturgy find to the front of the TV . or else of having meth percolate the effigy for each eye , the screenland ’s parallax barrier — call back of it is a very delicately grated fencing with precisely angled hollow — take unlike sparkle into each middle , and your Einstein turns the mixed sign into a 3D range of a function . The bad part ? With a normal parallax barrier , the CRT screen is permanently in 3D mode and you do n’t have exactly have a wide viewing angle . Sharp ’s deception for 3D in its LCD show is fancy — there ’s a 2d LCD that creates the parallax roadblock with a polarized grid of lines , which is nice because you could turn it off and go back to regular three-D viewing .
https://gizmodo.com/first-hands-on-nintendo-3ds-5564162
Integral Imaging
Integral Imaging is aform of parallaxactually . You ’ve got a clustering of supertiny micro - images that you actually peepthrough an regalia of spherical bulging Lens , one per micro - image . All these micro - images come together when you await at them to form a 3D image .
Another shape of parallax is continuous - question parallax . Here , HoloVizio ’s system dumps pixelsin favor ofvoxels , which can send off multiple light beams in multiple directions simultaneously .
https://gizmodo.com/holovizio-true-3d-display-uses-voxels-no-goggles-5014980
Something you still wanna do it ? mail any questions about three-D , treble Ds or croissan’wiches to[email protected ] , with “ Giz Explains ” in the subject line .
Gizmodo 3D ! We ’re emotional about the potential of entertainment in Three Ds , so this workweek , we ’re depend at everything skilful , bad and laughable about the current State Department of 3D.
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