iZ3D Driver is available for downloading free of charge. It is designed for anaglyph systems, the oldest and still one of the most wide-spread 3D formats. The observer is looking through red/cyan glasses at the monitor where the left image is displayed in red and the right image is displayed in cyan. The 3D signal source provides a composite image with the left image rendered in one tint and the right image rendered in another tint, with some optional intermediary color transformations.
Try to see this image with a normal pair of Anaglyph glasses.
system consists of a high-frequency display and special active LCD shutter glasses. While the display itself sequentially shows left and right images, the shutter glasses open the shutter for one eye and close it for the other eye, and then vice versa.
If TVs or monitors are used as a display, a stereoscopic signal source presents the content in frame-sequential format at a constant frame rate, which is precisely synchronized with 3D display system. In most cases the display supports 120Hz frame rate and the stereoscopic signal source sends 120 images per second at a constant, precisely defined rate; odd images are left and even images are right. As a result, the observer sees 60 stereoscopic pairs per second.
If a DLP projector is used as a display, the 3D signal source presents the content in checkerboard format: pixels in position of black checkers (with even sum of vertical and horizontal coordinate) are taken from the left image, pixels in position of white checkers (with odd sum of vertical and horizontal coordinate) are taken from the corresponding right image. In this case additional processing, like anti-aliasing filtration, may be applied by the signal source.
The IZ3D driver supports a highly synchronized frame-sequential output, at any frame rate defined by the customer. Also iZ3D drivers support checkerboard output for stereoscopic DLP projectors and apply anti-aliasing filtration. So, a PC with an iZ3D driver may be used as stereoscopic signal source for all shutter system.
systems use a TV or monitor with the addition of a patterned polarizer or retarder layer and passive polarizer glasses.
The patterned retarder/polarizer layer is applied to the display screen so that even and odd lines have different polarization. An interleaved 3D image is displayed, and polarizer glasses block unwanted light and show odd lines to the left eye and even lines to the right eye.
For example, an interleaved 3D image is displayed which has odd rows from the left image and right lines from the right image. Odd rows are polarized left-circular and even rows are polarized right-circular. The left lens of the 3D glasses is left-hand circular polarizer and right lens is right-hand circular polarizer. Looking with the left eye through the left lens, the observer sees odd lines of the screen, which comprise left image interleaved with even black lines. The inverse applies for the right eye.
For an interleaved 3D system the stereoscopic signal source sends interleaved stereoscopic images, where odd lines are taken from left image and even lines are taken from corresponding right image. In this case some additional processing, like anti-aliasing filtration, may also be applied by the signal source.
The IZ3D driver supports interleaved 3D output with optional anti-aliasing filtration, so that a PC with an iZ3D driver becomes a 3D signal source for interleaved 3D systems.
The iZ3D driver also supports Dual Output, where left and right images come through two separate outputs of the GPU. It can be used in cinemas, CAVE systems and other corporate, engineering and media applications that use dual projector set-ups or head-mounted stereoscopic displays. In both of these cases, left and right images are displayed directly to observer's eyes by distinct hardware. Stereoscopic signal sources in these systems provide left and right images through two separate signal cables. For GPUs with two outputs, the left image is sent through one GPU output and the right image is sent through the second GPU output.
Side-by-side output may also be used with some cinema, CAVE and head-mounted systems, that only have one single input. The single input treats the left half of the image as the left view and the right half of the image as the right view. In this case left and right images are displayed side-by-side as one wide image. Sometimes the wide image is compressed in the horizontal direction in order to fit standard resolution. The IZ3D Driver supports all variations of side-by-side output.
The iZ3D Stereoscopic Display is also supported by the iZ3D driver. The IZ3D display is a special monitor featuring two superimposed LCD panels with passive glasses to show stereoscopic images at full frame rate, full resolution and full color. Each panel of the iZ3D display needs specially processed images, that are generated by the iZ3D Driver. iZ3D monitor owners can download the iZ3D display driver free of charge.
Stereo Mirror output was made for Stereo Mirror systems. This type of system uses two monitors mounted on a special frame with a Beam Splitter (half-mirror) stereo mirror and it requires passive glasses. The two monitors show different images with different polarization, that are superimposed by the stereo mirror. The 3D glasses show the image of one polarization to one eye and of the other polarization the other eye. The signal source sends left and right images through separate cables, but it also applies mirror transformation to one of the images. The IZ3D driver supports this output mode – in case the GPU has two outputs, left and right views are sent through separate GPU outputs, one of them is mirrored.
VR920 virtual reality headgear is also supported by the iZ3D Driver. VR920 is a head-mounted system with two displays that show images directly to the left and right eyes. It has its own proprietary signal format that is supported by the iZ3D driver.
There is also a set of auto-stereoscopic 3D technologies. These systems use a TV or a monitor, preferably with extremely high resolution, overlayed by a micro-lens film or a special parallax-barrier layer. The Micro-lens film redistributes the light into sectors, so that different pixels can be seen from different observation positions. If the observer's eyes are covered by different sectors, they see different image on the screen. Usually auto-stereoscopic displays use multiple views, from 5 to 46 segments. For auto-stereoscopic displays, the stereoscopic signal source sends a specially mixed image that is made up of pixels of the original view according to some pattern rules. The resulting image distantly resembles a complicated multi-colored checkerboard. Anti-aliasing filtration is also applied. Some auto-stereoscopic displays have an on-board processor that generates views based on a supplied image and its depth map, and additional information. Multiple-view patterned checkerboard and image+depthmap outputs are available from iZ3D on demand.