Here you can apply stereoscopic techniques to create 3D images for display with the appropriate devices. The most simple and wide-spread method, one that you can also try at home, is Anaglyph. A set of 3D glasses with red/cyan-colored lenses enables you to view 3D images and animations can be purchased at affordable prices. The goal of this tutorial is to create a stereoscopic rendering of the telescope and globe in the following scene:
Both objects are shown in an illuminated scene, viewed through a Camera object. Although we will render this scene stereoscopically, we already have the possibility of viewing the image stereoscopically in the Viewport. To do so, call up the
The 3D effect can now be seen in the Viewport and we can start fine-tuning the Camera object in the Attribute Manager using the Placement menu’s settings. First, both cameras’ Placement settings have to be set to Off Axis so their view angles will cross. We will leave the Eye Separation value set to 6.5, which corresponds to the average value for the human eye. The Zero Parallax value defines the location of the monitor. The stereoscopic effect creates the illusion that objects lie either in front of or behind this plane. The Near Plane and Far Plane settings can be used to define how far objects can lie in front of or behind the Zero Parallax plane without irritating the observer’s view. These are only visual references that will be displayed in the camera’s own reference pyramid. The values 70 and 90 have proven to be very common in everyday use, which is why they are available as pre-defined values. In this Project we will use a Zero Parallax of 1600 and set Auto Planes to 90.
So far we can only see the result in the Viewoport and the usual render result can be seen in the
In order to see a stereoscopic version of the rendered image in the Picture Viewer we have to enable Stereoscopy in the Edit Render Settings menu. This will make numerous options available with which you can adjust the look of your image, e.g., if your image should be calculated individually, combined or as an original image.
This is also where the option for defining the stereoscopic Mode is located. The default setting Anaglyph is ideal for our type of stereoscopy because this Mode is ideal for viewing with the 3D glasses mentioned above. The remaining Modes produce images that create 3D effects using a special technique. The results are shown in the image below. At top: Side-by-Side; at bottom: Interlaced.
However, the Anaglyph Mode bears the disadvantage that the color in the image suffers when viewed through colored glasses. This is why a couple of methods are available with which this can be countered. These won’t make the image perfect but does improve certain colored regions of the image.
If you take a look at the differences between Full, Half Color and Optimized in the image below you will see the differences in color optimization:
Another interesting possibility is offered by the Picture Viewer itself if individual images have been rendered and not only the Merged Stereoscopic Image. After rendering you can adjust the Mode and its respective settings in order to subsequently achieve an optimized result.
Your final rendered stereoscopic image from this tutorial should look like the one below: