Hi, this is Wayne again with a topic “3D Glasses and Screens as Fast As Possible”.
Everything seems to be going 3d lately. 3D movies, the Nintendo, 3ds and oculus rift are all recent examples, but 3d technology has been around for a while. So how does it work? First, you need to understand how the brain is able to see 3d objects in the first place, because your two eyes have some distance between them. Each eye sees a slightly different view of the world objects which are closer to you appear to be in different positions when compared to things that are further away. This is called parallax and it’s the basis for how all 3d technology works.
These two slightly different views are then combined together in the brains, visual cortex, to form a mental 3d image. So 3d technology simply has to trick the brain into thinking that something is 3d when it’s really not. This is accomplished by presenting two slightly different images to each of your two eyes. There are several ways to do this first up stereograms.
This is how those old view master 3d toys worked. Each eye simply looks directly at a different image, which are so close to your face that you can’t help but focus one eye on each of them. Oculus rift also works this way with each eye seeing a slightly different image, but you don’t even need a special device to make this work. You can just place the two images side-by-side like this hilarious picture of beardless terran from 2006.
All you need to do is cross your eyes to match up the images. This is very similar to how magic eye images work for this single image stereogram. Instead of crossing your eyes, you make them more parallel same concept, different eye placement.
This one is a shark. Some people can’t seem to make these kind of images work, though, how about just putting on a pair of glasses, these red and cyan tinted glasses are used for anaglyph 3d. You’Ve probably seen this before the two different pictures are converted into red and cyan and then merge together to create a sort of bluish reddish image that looks weird until you put on the glasses with these glasses. The cyan lens can only see the red image and the red lens can only see the cyan image. This method is really simple and it doesn’t need anything special to work aside from the cheap glasses.
However, because color is used to distinguish between the two images, the actual perceived colors of the final image, don’t look very good. Our next 3d method is called active shutter. You wear these active shutter glasses, which block light to each of your eyes. Alternatively, in sync, with the screen, so when the screen displays an image intended for your right eye, the glasses block the left eye from seeing anything and vice versa. This is done 120 times per second, so that each eye is able to see 60 frames per. Second. It’S done so rapidly that you’re unable to tell that anything is even happening in theory anyway. In practice, the flickering is noticeable and many people get headaches from playing 3d games and watching 3d movies in this manner.
Also active shutter glasses are not cheap. That’S why? The more popular option today is the real de 3d system. It uses a very special kind of polarization to work. Polarization has to do with the orientation of a wave of light light waves traveling through a linear, polarized filter will all oscillate in the same direction, but using special fancy technology. A movie theater can project light waves that are circularly polarized, with entire images being either clockwise or counterclockwise polarized your eyes, don’t notice anything, but these glasses only allow for clockwise polarized light into the right eye and counterclockwise polarized light into the left eye, voila 3d. But what, if you don’t want to have to wear glasses at all, lenticular 3d is a very clever method that doesn’t require glasses, you’ve probably seen these before, but have no idea how they work. A lenticular lens is placed on top of two or more interlaced images, which will only show each of these images from different viewing angles close up. It looks something like this.
This method is pretty cool. It’S used in printed media a lot and not just for 3d effects. It can also be used for simple animation or to morph one image into another, and last but not least, we have the parallax barrier. This method is used, most notably by the Nintendo 3ds, which uses two overlapping LCD screens for its 3d effect.
The primary LCD screen on top displays two interlaced images, while a secondary LCD screen placed between the primary screen and the back light blocks, the outgoing light with thin vertical strips. It’S the viewing angle that determines which of the two images is visible. While there are others, these are the most common 3d methods in use. Today, speaking of simulating 3d look there’s two of us now. Maybe if you stare long enough, we’ll turn 3d.
No all right then hit the road I’ll handle this myself. This, my friends, is the bucket of complaints about the last ad that we did for Dollar Shave Club. So today’s explanation of how Dollar Shave Club works will not attempt to be funny and will instead be 100 % clean and professional.
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That’S all there is to it. So ask yourself this for a moment: do I buy razors, do I overspend so that big brands can buy Super Bowl ads instead of supporting a business that charges a fair price for their product and uses their smaller marketing budget to support creators like YouTube whose work I really enjoy if either of those things sounded bang-on, for you then head over to dollarshaveclub.com, slash Linus. What do you have to lose other than some unwanted hair, guys like this episode of fast as possible? If you liked it dislike it, if you disliked it, and you want Taryn to cry tonight and leave a comment telling us your favorite has 3d experience. If any, was it habit R? Is it the 3ds? Is it when you take the glasses off and put them in the bin, because you’ve got such a splitting headache love to hear from you guys, thanks again for watching and as always, don’t forget to subscribe to tech quickie from our fastest possible episodes. Just like this one .