First and foremost, you’ll want to consider the type of 3D glasses that are compatible with your home theater/3D system setup. There are two main types of 3D glasses:

• Passive
• Active

Passive 3D glasses are the most common and work with any 3D TV or projector that uses polarized light. Active 3D glasses, on the other hand, require a special battery and work with TVs and projectors that use an active shutter system. Bluetooth 3D glasses are similar to active glasses, but they use Bluetooth technology to sync with your TV or projector.

When shopping for 3D glasses, you’ll also want to pay attention to the compatibility with your TV or projector brand. Some 3D glasses are universal and will work with any brand, while others are specifically designed for certain brands. Be sure to check the compatibility of the glasses you’re considering before making a purchase.

We need to consider the following key points when buying 3D glasses.

Compatibility

Make sure the 3D glasses you choose are compatible with the device you’ll be using them with. For example, if you have a 3D television, you’ll need glasses that are compatible with that specific TV.

Lens type

There are two main types of 3D glasses lenses: active and passive. Active 3D glasses use batteries and emit a signal to sync with the 3D content, while passive 3D glasses do not require a power source and rely on the polarization of the glasses to create the 3D effect. We have a good article discussing Polarized 3D glasses – All About Polarized 3D glasses.

Comfort

Consider the fit and comfort of the glasses, especially if you plan on wearing them for extended periods of time. Look for glasses with adjustable nose pads and earpieces for a better fit.

Price

3D glasses can range in price from a few dollars to several hundred dollars. Decide on a budget and look for glasses that offer the features you need at a price that works for you.

Reviews

Read online reviews from other customers to get an idea of the quality and performance of the glasses you’re considering. This can help you make an informed decision and choose a product that is likely to work well for you. If you are buying from Amazon or Flipkart it is better to read the product reviews and check the seller rating too.

Convenience

Finally, consider the overall convenience of the 3D glasses. Look for glasses with features like rechargeable batteries and a storage case to make your 3D viewing experience as hassle-free as possible.

Conclusion

In conclusion, there are several factors to consider when shopping for a pair of 3D glasses. By keeping these tips in mind, you’ll be well on your way to finding the perfect pair for your home theater setup. Happy shopping!

The post 3D Glasses Buying Guide: Tips and Tricks for Finding the Perfect Pair appeared first on NoloWiz.

• Classic Red/Cyan Glass
• Green/Magenta Glass
• Yellow/Blue Glass

Classic anaglyph 3D Red/Cyan Glass

Red/Cyan anaglyph 3D glasses are widely used. Major types of this glass are

• Dubois Red/Cyan – Dubios avoid color ghosting problem
• Half colored Red/Cyan
• Red/Cyan gray

Green/Magenta Glass

These anaglyph glasses use a Green/Magenta filter. Major types are

• Half colored Green/Magenta
• Green/Magenta gray

Yellow/Blue Glass

Finally, yellow blue anaglyph 3D glass. Two major types of anaglyph 3D are

• Yellow/Blue half colored
• Yellow/Blue gray

To know about polarized 3D glass read our article

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• Passive 3D glass
• Active 3D glass

Passive polarized 3D glass

Passive 3D glass does not need the power to operate. It uses polarized glasses as lenses, based on the type of polarization we can classify as

• Linearly polarized glass – The viewing quality depends on the tilt of the viewer,so it is not used widely.
• Cirucularly polarized glass – The viewing quality does not depend on the tilt of the viewer, it is normally used in TVs and cinemas.

Pros

• Good 3D effect as compared to anglyph 3D
• Cheaper than active 3D glass
• Comfortable

Cons

• Requires a silver screen when using projector

Active 3D glass

Active 3D glasses need the battery to operate. These glasses are based on LCD shutters, these shutters are placed over each lens. The LCD glasses are darkened to block the lens sequentially and it is in sync with the 3D . It also communicates with the 3D system using any one of the methods below

• Infrared emitter – PC & TV
• Radio frequency emitter – PC & TV
• DLP-link – Projectors

Pros

• Very good 3D effect
• Good color reproduction

Cons

• Expensive
• Not very comfortable
• Flickering

To read about polarized 3D system read our article.

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Firstly, polarized 3D systems need a display and 3D glass. A polarizer is an optical filter. Light waves can have multiple polarizations and polarizers allow specific polarization to pass through. In other words, polarizers allow specific property of light to pass through. In comparison to anaglyph 3D, a polarized 3D system produces natural color images.

Based on the polarizer used two polarized 3D systems are available

1. Linear polarized 3D
2. Circular polarized 3D

All 3D systems need left and right images to produce depth of the scene.

In linear polarizing 3D, left and right images are projected superimposed onto the same screen through polarizing filters. Therefore, the viewers should wear linear polarized 3D glass. This 3D glass will contain the same filter as the display. The viewing quality depends on the tilt of the viewer.

In circular polarizing 3D, left and right images are projected superimposed onto the same screen through circular polarizing filters. Therefore, the viewers should wear circularly polarized 3D glass. However, the viewing quality does not depend on the tilt of the viewer. Let us see sample images of anaglyph 3D and polarized 3D.

Anaglyph 3D(Red-cyan 3D) frame as shown below (Screenshot from ExMplayer)

Screenshot of a polarized 3D video frame (Screenshot from ExMplayer)

Polarized 3D for the Cinema

Dating back to the 1950s, linear polarization 3D technology first used in 1953’s horror film House of Wax. Today’s 3D movies use the circular polarization method. The projector will send Polarized 3D images to the screen thus it will get reflected back to the viewer’s Polarized 3D glass.

Polarized 3D for Computers and TVs

Linear polarization 3D displays are best for gamers because they will look straight into the monitor. Circular polarization best works for television because people may move around the TV. The Circular polarization technology used by brands like RealD, MasterImage, LG, DepthQ, and others.

3D Polarization techniques are easy to apply in cathode ray tube (CRT) displays however Liquid Crystal Displays(LCD) already contain polarizers. These polarizers can interfere with 3D polarizers, therefore LCD is not suitable for polarized 3D. Polarized 3D systems are superior in producing color 3D images.

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1. 3D GIF
2. Wiggle 3D
3. Out of Bounds or Pop-Out image

3D GIF

GIF animations may contain multiple frames/images. We will get the illusion of 3D while playing GIF. GIF simply means Graphics Interchange Format, an image format used to store animation frames. 3D GIF images split into 3 panels as shown below

GIF animation may contain multiple images called animation frames. Some elements of the animated frames pop out of the frame in front of the white lines and toward the viewer. A sample 3D GIF as shown below

Here 3D illusion works because white lines act as foreground reference points that acts likes a screen. The actions in the animated frames seem to pass through these white lines and our brain got fooled that the action moved pop out of the foreground.

Wiggle 3D or Wobble 3D

For 3D we need left and right images. Wiggle 3D/stereoscopy animates the left and right frames and due to parallax, it will create the illusion of depth. We can watch wiggle 3D without 3D glasses. Wiggle 3D does not require any special hardware.

Most of the wiggle 3D GIF uses two images, which cause jerky animation. Multiple intermediate frames can be used to smooth out animation.

Out of Bounds or Pop-Out image

Out of bounds or pop out image is another popular method of 3D. Some part of the images appears to pop out from the image frame.

In the above image, the flower popped out from the photo which will create the illusion of 3D. Out of bound 3D images can be created using photoshop. Hope you enjoyed reading our article.

The post 3D Without Glasses appeared first on NoloWiz.

In normal photos, we can’t perceive the depth of the scene because it is recorded using a single camera. To mimic our stereo vision two lenses are used in the 3D camera system. Special glasses can be used to perceive the depth of the video.

Anaglyph 3D and polarized 3D are two major 3D technology.

In anaglyph 3D each eye’s images encoded using different color filters. A Red/cyan color filter is commonly used for anaglyph 3D.

In polarized 3D two images super imposed using polarizing filters. Special polarized glasses are need to watch it.

Types of 3D videos

Let us discuss some major 3D video formats. There are two different types of 3D video formats
1.Side-by-Side
2.Top-and-Bottom

1.Side-by-Side(SBS) 3D

Side by side(Left/Right) 3D format is a popular 3D video format. In this 3D format left and right eye frames are joined horizontally to form the entire video frame( as shown below ). The frame corresponding to the right eye scaled down to the right side of the frame then the left eye frame scaled down to the left side of the frame.

Two types of Side-by-Side 3D video are

1. Side-by-Side half-width 3D
2. Side-by-Side full 3D

Difference between SBS half-width 3D and SBS full 3D

Left and right eye frames scaled to half of its width and joined side by side to form Side-by-Side half-width 3D video frame.

Suppose the left and right eye frame has a resolution of 1920×1080. These frames rescaled to 960×1080 and put them side. Now we have a 3D video frame of 1920×1080

Left and right eye frames are joined side by side to form Side-by-Side full 3D video frame. It has better quality as compared to SBS half-width but bigger file size.

2.Top-and-Bottom 3D

Top-bottom 3D format is similar to SBS, here each frame will be joined vertically.

Two types of Top-and-Bottom 3D video are

1.Top-and-Bottom half-height 3D
2.Top-and-Bottom full 3D

Difference between Top-and-Bottom half-height 3D and Top-and-Bottom full 3D

Left and right eye frames scaled to half of their height and joined top and bottom to form a Top-and-bottom half-width 3D video frame.
If the left and the right frame has 1920 x 540 resolution and the entire frame will be 1920 x1080

Left and right eye frames joined vertically to form Top-and-Bottom full 3D.

Types of 3D viewing glasses

Two types of 3D viewing glasses are available

• Anaglyph 3D glass( Classic Red/Cyan glass)
• Polarised 3D glass

How to watch 3D videos in ExMplayer?

Want to play 3D videos in Windows and Linux? ExMplayer is a cool free 3D video player for Windows and Linux. It plays almost any video file without the need for extra codec installation.

Some cool features to mention are

• 3D video playback
• 3D to 2D playback
• Play any media file
• Media cutter
• Video to gif animator
• Subtitle downloader
• YouTube video downloader

Playing 3D videos is simple using ExMplayer.
Open your video file
Enable 3D using menu/toolbar button
It will ask you to select the input format of the 3D video as shown

Or you can select input/output format using the menu as shown below

Put your 3D glasses and enjoy 3D.

How to watch 3D video as 2D?

If you don’t have 3D glasses, don’t worry still you can watch it as a normal video. ExMplayer will help you to watch 3D videos as 2D. To view as 2D, from the 3D menu select “watch as 2D video” as shown below

How to watch a polarized 3D video?

ExMplayer is a polarized 3d video player for pc. It has the support to play polarized 3D videos. You will need polarized 3D glass to watch videos. Before using polarized glass please note that your monitor must be capable of 3D. To use polarized glass, from the menu 3D->Viewing methods->3D output formats->interleave rows left first.

ExMplayer 3D is free to download you can get it from here http://exmplayer.sourceforge.net/

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