Matthew Watt is an amateur tech enthusiast, but now a sought-after editor at EaseFab. He is responsible for writing contents on DVD, digital video, audio, software reviews, new digital contents etc. He continues enjoying painting and comics, and is currently fascinated with photography. What Is Anaglyph 3D? Follow us. With slightly different image I mean, one image from the angle of your left eye, and another one for your right eye.
This gives us humans the ability to perceive depth. As you can see in the illustration above, under the assumption than an eye has roughly a degree angle of view, we see how both viewable areas overlap yet under a slightly different angle. Simplified: Both eyes see the overlapping, darker, area. Yet each eye see a fraction that cannot be seen by the other eye brighter areas. When looking at object B , only with the left eye , you would not see object A.
Object B is blocking your sight. However when looking at object B , only with your right eye , you would see at least a part of object A behind object B.
If we now combine these 2 images in our brains, depth will be perceived. Again : The current methods for 3D display are only illusions. One of the earliest 3D illusions where achieved with the well known paper 3D glasses, with a red lens for one eye, and a blue cyan lens for the other eye. This stereoscopic method is often referred to as Anaglyph. Therefor this method has been used in movie theaters and illustrations like comic books, etc.
The big downside though is that it will not be able to see full color images since this method is based on filtering out certain colors. The trick for Anaglyph 3D is that we use two images, one for each eye. Each of the two images is then converted to greyscale.
Then the image for one eye will then be converted to colors in the blue cyan spectrum, and the image for the other eye will be converted to colors in the red spectrum. The blue or cyan lens right eye will filter out anything in the blue spectrum — therefor anything in the blue spectrum will not be visible for the right eye. The same happens for the left eye, but in this case anything in the red spectrum will not be visible.
So a red filter will remove all red colors. Filter means: to remove something unwanted. Polarization comes in multiple shapes and forms, and is also a method of stereoscopy. Here again two images are displayed, each with a different polarization, allowing one eye to see one image and the other eye the other image … this time in full color! There are different methods available for this, but to keep it simple: two images are superimposed and projected onto the same screen at the same time.
Each of the 2 pictures has a different polarization. The 3D glasses used to view this type of screen uses filtering as well. Each lens, similar to what we have seen with the old school 3D glasses, filters out one image based on polarization, which makes it that each eye can only see one of the 2 pictures.
For this method we typically use passive 3D glasses, which are typically cheap and more practical and comfortable when compared to Active 3D glasses. Personally I prefer this method over Active 3D glasses. An alternative to the Polarization method is the use of Active 3D glasses which rapidly switching images on the screen while alternating the lens of the glasses one can see through.
When power is applied, the lens becomes black and that particular eye cannot see a thing. Keep in mind that this goes super fast, and the glasses need to be synchronized with the TV to make sure the proper speed and timing is used. Obviously this method has downside like the need for the glasses to have a power source — implying the need for charging and the fact that the glasses will be heavier than the passive 3D glasses. Also keep in mind that some people develop a headache or even get nauseous when using these more expensive glasses.
At this point in time, I cannot recommend using Active 3D glasses, as I see only disadvantages compared to passive 3D glasses,… but to each its own. Active 3D Glasses — a. Shutter Glasses. Although not as common as the methods mentioned earlier, they do exist and actually have been around for quite a while already. Typical limitations however are limited video resolution and one-person use only. So instead of filtering, as seen with the previous 3 methods, 2 different screens display the appropriate image.
Keep in mind that people have reported to get seriously nauseous with these kind of glasses when watching fast moving video. Other methods used in theaters are comparable simplified to your 3D TV experience at home.
One of the main methods is a method developed by RealD which uses circular polarization which offers the advantage that the viewer can actually tilt their head when watching a 3D Movie. The video resolution of DVD however is very limited and 3D movies in that format would look rather poorly.
BluRay on the other hand offers much more storage space than a DVD and the supported resolutions are much higher. This allows BluRay to use several methods for presenting 3D Movies. Unfortunately, the use and implementation of 3D has a history of inconsistency. One method seems to allow auto detection of 3D, Full High Definition 3D , in which the entire image is duplicated at full resolution, unfortunately I have not ran into those yet, so I cannot confirm this.
The movies however need to be of a particular format and you will need to manually switch your TV to the required 3D Video Mode. Now that we have a basic understanding how the 3D illusion works, namely showing a different image for each eye, time to get out feet wet with 3D Movies.
The same basics apply to 3D movies from BluRay though. Keep in mind that the following formats are independent of the type of glasses you use with your TV. Keep on reading and you will get the best solution to this issue. This program can rip videos files in fast speed and keep the lossless quality.
The main feature of Xilisoft Blu-ray Ripper:. Leawo Blu-ray ripper is a professional and powerful 3D Blu-ray to MP4 converter which not only can rip and convert Blu-ray to video in desired format, but also can extract audio off Blu-ray and save in different formats available on various kinds of media players or portable devices.
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