3D Vision

3D Vision

The 3D Vision kit from Nvidia includes a set of active shutter glasses that must be used in conjunction with a monitor that can refresh at 120hz and an Nvidia graphics card. With this solution, 30 frames of animation are rendered per second for each eye. Then, the frames are shown in alternating order, one left frame, then one right frame and so on. The shutter glasses are powered by a battery and sync wirelessly with the computer. When a frame for one eye is displayed on the monitor, the lens of the glasses over the other eye goes black. This switches back and forth many times each second so that each eye sees 30 frames per second. A 120hz monitor is needed for this as a 60hz monitor can only display 30 frames per second total, while you need 30 frames for each eye.

The entire concept of inducing 3-D vision is based around your capacity for binocular vision. Basically, your two eyes work together to gauge the distance between you and the object that they're focusing on. This works due to the placement of the eye, and how far each object is perceived according to each eye, creating a triangulation effect that allows things that are within 20 feet of you to have a very tangible three-dimensional look. Each eye looks at the object at a slightly different angle, and your brain uses these two distinct images to figure out your distance from it. You can still perceive distance to an extent when you only see with one eye, but you definitely don't get the accuracy that you have with both eyes and the binocular vision that comes with it.

3D Vision