use of parallax vision in virtual reality systems

Stereoscopic vision comes from the fact that human eyes see real world things from two perspectives. Eye muscles and cognitive analysis of one's brain function synergistically to combine these two different pictures into sensation a single picture with three dimensions. Muscles in both eyes change the shape of each the lens to change the focus distance of the object viewed. Other muscles change the orientations of the eyes so that the angles of perception from both eyes cross at that same distance. In real world sight, these two muscle functions work together. In Virtual Reality, they may not match. When pictures are displayed at great distances, then the display size required for immersion is prohibitively large and it is a challenge to present alternate images to one's eyes. When pictures are shown near to the eyes extremely high image resolution is required and the two muscle functions of the eyes tend to conflict. Sub-page Cage8 covers additional useful information.

In order to simulate the sense of touch, Virtual Reality systems must simulate the physical resistance that virtual things would exert on our movement as if they were actual. This resistance can be transmitted to the human body though several mechanical pistons, inflatable air pockets, or electro-magnetic devices integrated into gloves or body tights. Simulation of touch and motion through such devices is known as "haptics." Although kinesthetics technology currently lags behind computer to human communication through vision and audio signals, it will likely become more common with scientific advances. Visit also Virtual Tours Kentucky .

Linked page Home Simulation also reports this VR subjects.