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  • [EV]3 inventions & know-how — Dynamic depth map

One of our early solutions is a unique technology for dynamic autostereoscopic image called dynamic depth map based on glasses-free 3D displays.

It allows preserving high-quality stereoscopic effect for any overall scene depth when controlling 3D applications in the real time. This is achieved by computing the dynamically changing local scene depth in the real time.

This solution is still unparalleled in the world.

Depth map: what is it

Glasses-free 3D image technologies use the principle of splitting a picture into two different images, one image for each eye of the spectator. For this purpose, 3D displays use lenticular lenses, special cylinder lenses that refract light in various directions. This creates multiple viewing angles, so you can observe the 3D effect not only in front of the screen center, but also on the sides.

Glasses-free 3D displays use pre-processed video signal converted from 2D to 2D+ format using a special technology. It could be regular films, cartoons and, of course, 3D graphics (3D Studio Max, Maya, Lightwave, etc.). However, there were held successful tests in Europe demonstrating that glasses-free 3D monitors can receive and display TV signal in the real time.

Processing of a flat 2D picture starts with a special program splitting the clip into separate scenes. A key frame is selected in each scene, and the depth map is created for this frame manually using a graphic editor.

Usually, the depth map is created manually: the operator defines near and far objects seen by the spectator. The scene with finished depth map is, in its turn, processed automatically. One specialist can process from 6 to 10 minutes of video track per day, depending on its complexity and the number of scenes.

The grayscale on the depth map defines the visual remoteness of the object from the spectator.


Thus, objects being close to the spectator have lighter grayscales on the depth map.
Remote objects have darker grayscales.

Static vs dynamic

Static depth map allows creating the so-called «post production» content. In other words, these are films, clips, computer graphics shaped as finished video, as well as photos and 3D render.

The use of dynamic depth map allows the spectators to go beyond mere observation of the video and photo materials and start controlling a 3D presentation in the real time. In other words, it makes the 3D video content live, preserving an amazing stereo effect on a glasses-free display.

Calculation of the dynamic depth map for each 3D object in virtual scenes is performed 60 times per second in the real time. EligoVision software calculates the position depth of the 3D object in 3D-coordinates of the glasses-free WOWvx display and dynamically changes the depth map of the stereoscopic scene perceived by the spectator on the stereoscopic display.

It is a complicated technology that allows creating controllable interactive worlds based on our own augmented and virtual reality technologies and demonstrating 3D applications on glasses-free displays.

Our projects based on dynamic depth map technology

More than half of our augmented and virtual reality projects are based on our proprietary solution — dynamic depth map.

The most interesting of them are listed below:

To find more information about our projects please visit this page and select any category you like.

Our project based on static depth map technology

The most captivating photos and videos in the glasses-free 3D format! They catch the visitors' eyes at the exhibitions and presentations as innovative and high-impact captions.