3D Video Format
There are several transmission methods for 3D video. Here we give out all the 3D video transmission formats and detaily introduce each 3D video format for you in this article. Go through this article to see how many do you know about them.
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New 3D Video Format: Anaglyph Format
Anaglyph format is a 3D video format when viewed with glasses where the two lenses are different (usually chromatically opposite) colors, such as red and cyan. Anaglyph format 3D video presents images which are made up of two color layers, superimposed, but offset with respect to each other to produce a depth effect.
In an anaglyph, the two images are superimposed in an additive light setting through two filters, one red and one cyan. In a subtractive light setting, the two images are printed in the same complementary colours on white paper. Glasses with coloured filters in each eye separate the appropriate images by canceling the filter colour out and rendering the complementary colour black.
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3D Video Format: Top-and-bottom Format (Over/Under Format)
The Over-Under or Top and Bottom 3D format is another alternative for 3D broadcast. This 3D video format is pretty similar to side-by-side 3D except that it halves the vertical resolution instead. The video content is encoded in a manner as shown in the adjacent figure. This 3D format only available primarily up to 720p resolution, top-and-bottom 3D offers 1,280 pixels horizontally.
A single frame has a resolution of 1920×1080 (1080p) or 1280×720 (720p) but is divided into two sub-frames, the upper one consisting of the sub-frame meant for the left eye (Labeled L) and the lower sub-frame meant for the right eye (labeled R). As you can tell, the vertical resolution of each sub-frame is halved as a result of the over-under 3D format. The higher pixel count is generally considered more suitable for displaying panning motion in sports programs.
3D Video Format: Interlaced Format (Field Sequential)
Interlaced video is a technique of doubling the perceived frame rate of a video signal without consuming extra bandwidth. It was an old standard for stereo video. It involved utilizing the two fields of a video frame shot into left and right half-frames which enhances motion perception to the viewer and reduces flicker by making use of the persistence of vision effect. One thing should pay attention to the interlaced format is that the interlaced signals require a display which is natively capable of showing the individual fields in a sequential order.
3D Video Format: Side-by-side Format
This 3D video format, which is commonly used in 3D broadcasting, works by halving the horizontal resolution of videos to store left and right eye images in each frame. It mainly present in two 3D video transmission formats: parallel format and cross-eye format.
If you'd like to prefer to view view stereoscopic with a viewing attachment. You'd better watch it in a parallel format, where the image for the left eye is on the left of the picture, and the image for the right eye is on the right of the picture, like the picture shows on the left.
Some 3D videos are displayed in cross-eye format. This means that the image is split into two halves: the image for the left eye is on the right of the picture, and the image for the right eye is on the left of the picture, just as the left picture shows.
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