GI - Global Illumination
The basis for true photorealism
In computer graphics, global illumination refers to the simulation of light interactions and the propagation of light rays from 3D objects in a scene.
Direct illumination from various light sources is not sufficient for a realistic scene representation. The graphics below show very clearly the difference between direct (upper representation) and global (lower representation) lighting. 
The global illumination means that the ceiling is no longer black, the walls radiate their colour back into the room and a caustic forms under the glass sphere.
The representation in VIRay is based on GI lighting
The screenshot below shows very impressively how GI lighting works in VIRay in a scene taken from Carat. The lighting coming from the direct light sources (ceiling spotlights, hanging lights, fireplace) reflects onto the 3D objects and the result is a very realistic looking scene.
Various controls are available to influence the lighting and colours in real time.
Contrary to the usual performance profile of 3D kitchen planning systems, our software does not simply calculate an image, but a complete 3D data model that can be "walked through" in real time.
The calculation takes only a few seconds and then you can start: the viewer "walks" through the room in photo-realistic quality and can look at every detail. A 3D mouse is available for this purpose, which controls the direction of movement/walking with its joystick. You can walk forwards, backwards, turn left or right and look up or down. The kitchen is precisely calculated and shown in absolutely realistic quality, with reflections, light and shadow.
Here, VIRay achieves computing speeds that are absolutely unique with approx. 120 images per second and form the basis for a real 3D representation in real size. A separate image is calculated for each eye. The 3D depth achieved in this way is fantastic.
On the basis of such quality, it is of course possible to sell kitchens (or basically furnishings) without the need for an exhibition or sample booths.
In our VI•Cinema, the viewer/customer sees his new kitchen in such a realistic quality that he thinks he is standing in front of it in real life.
That conveys emotions!