A new render algorithm gives more freedom of movement to a group of viewers in front of the 3D screen. The algorithm can be integrated in the control system of a variety of multiview 3D displays, including legacy versions. The new technique enables seamless adaptation of the viewing distance in a range of from half to double the original viewing distance with no impairment of depth impression or picture quality.
Up to present fields of application for autostereoscopic displays have been seen mainly in 3DTV as well as special niches of medical technologies, research and construction. But the advertising industry is now going for an increasing use of 3D digital signage in public spaces. The promotional impact it creates is much greater than that of 2D advertising.
The flexible solution generates a range of viewing positions which allows users of various eye positions to enjoy 3D viewing at a distance from the screen or close up to it. This is a considerable advance on previous systems whose predetermined value of fixed viewing distances restricted backwards and forwards movement of viewers.
In lenticular lens systems the autostereoscopic rendering of 3D images is based on separation of the images or video streams for each of the user's eyes. The cylindrical lenses integrated in the screen spread the pixels across multiple angles of vision. The software-based distance adaptation system controls each individual sub-pixel independently of the hardware and generates a modified interleaving pattern for the sub-pixels which opens the way for 3D playback for multiple positions in front of the display.
- Shift of viewing distance – wide range in front of and behind the nominal distance
- Smooth lateral shift of viewing zone possible
- Flexible technology for any glasses-free 3D displays
- Floating perspective – no flipping between views
- Content generation from DIBR and CGI