What is 3D HD?
3D HD (3D High Definition video) is the next big thing.
Now available for your events!
Using a customised rig with two HD cameras spaced 70mm apart, we are able to capture left- and right-eye imagery in HD. In addition to being high definition, the revelation is that 3D footage can now be viewed without having to wear special 3D glasses using the latest autostereoscopic displays. In fact, a number of manufacturers have created 3D TV sets and advertising displays using this technology and it undoubtedly represents the next step in video and TV’s evolution. Of course, 3D video can also be achieved using the old style 3D glasses worn in an IMAX cinema or in front of latest generation DLP (Digital Light Projection) rear-projection televisions.
The Traditional Methods to Achieve 3D Video
Most people would recognize a pair of 3D glasses. This technique for achieving 3D video is known as Color Anaglyphic Procedure and requires two partial images to be recorded with different color filters, usually red and green or red and blue. These partial images are then merged together and broadcast, so that the screen shows two layers in two colours. The 3D glasses have the same filters as the camera so that for each eye half of the film’s image is deleted. The viewer’s brain puts these two slightly different images together in the same way that it does with the two different images that our eyes perceive when not wearing the glasses. The brain combines the two images to create stereo vision and the perception of three dimensions. The advantage of this system is that viewers can see a 3D image from any angle, but the downsides are that they have to wear strange glasses and cannot see the images in natural colours.
An alternative is called Polarization Filter Technology. It also requires two separate cameras to record two separate images. On viewing, the two images are separated using two polarizing filters, placed between the image and the viewer’s glasses and at a 90 degree angle. As with the coloured filters, the polarized light means that each eye receives a slightly different image, which the brain interprets as a spatial picture. The advantage of this method is better colour rendering, but the downside is that you need a special screen and the screen can only be viewed from directly ahead.
The New Technique
As with previous methods, our cameras record two video streams, each from a slightly different perspective. The images are then broadcast at the same distance from each other as the gap between our eyes, helping to fool the brain into think that it is seeing a 3D image. Several views of this image are broadcast simultaneously onto the latest autostereoscopic displays so that the 3D video can be seen from nearly any angle at the same time and allowing the viewer to move his or her head without losing the image. This technique, combined with HD Multichannel Audio (5.1, 7.1 etc.), enables viewers to feel as if they really are at the centre of the action.
The Future is 3D
3D HD has already been successfully trialled with high profile sports events and a number of big-budget films are being released in the format. Hyundai has launched a 3D HDTV channel in Japan and the technology is creating a lot of excitement in the media industry. As 3D-capable screens become more popular amongst consumers and in outdoor advertising displays, 3D video and in particular 3D HD will become more popular. With the introduction of HD mobile phones, there are already now rumours of 3D HD mobile displays in development.
Pioneering this technology, we offer a comprehensive production and post-production service for the next generation of video: 3D HDTV.