"For a long time, the images seen by visitors in virtual space - such as these images produced by NASA in the 1980s -
were very simple. "
Early low-resolution imaging with the VIEW system

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Click to play video Demonstration of the VIEW system

Visualization <1986>

Until the late 1980s, it was very difficult and expensive to generate complex images fast enough – twenty or thirty images a second – for the user to have the impression of real immersion in a virtual environment, with instantaneous changes in what he saw corresponding to movements of his head and eyes. Today this technology has made considerable progress and there are now high performance computer cards that can create detailed stereoscopic images at very high frame rates. Similar devices are also becoming available for use with ordinary personal computers.