The world of virtual reality has been a hot topic in the past decade. With popular movies like The Matrix, and less popular ones like Johnny Mnemonic (somehow Keanu Reeves got starring roles in both), the idea of virtual worlds has now become a staple in our society. In a very interesting article, by Bryn Nelson, we get to see just how real life virtual reality is making huge strides in advancement.
The apex of true “virtual reality” is to fool someone into thinking something is real, when it isn’t. This idea, according Michael McGuigan, is closer to realization than people know. McGuigan is a scientist working at Brookhaven National Laboratory, and is researching virtual light. With his research, the possibilities of creating the effect of natural light is possible. With this virtual light technology, they are able to create real life looking replicas of an object. These images, in studies have been able to fool people into thinking it’s the actual thing.

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In other research, being conducted by Henrik Wann Jensen, at the University of California at San Diego, they are trying to make more realistic animation. It’s easier to create a realistic image, but to recreate real life animation is much tougher. The big reason for the difficulty comes from computing power. Creating a real-to-life animation consumes a lot of computing power. This problem is being addressed by trying to create animations by using methods that cut computing cost. Ray tracing and photo mapping are the two methods in which realistic animation can be achieved. With ray tracing, you can see how a beam of light interacts with the environment it surrounds. With photon mapping, it handles the other spectrum of how an object looks when light isn’t interacting with it.
The next stage of creating a more virtual realistic world is emulating conversation. While there have been advancements in word recognition, the next stage is picking up other forms of communication that humans give off. Roddy Cowie, a professor of psychology, is trying to setup dialogue to a computer by means of voice tone, and facial expressions instead of words. Here is Cowie’s thoughts on Oprah, and how she’s a good subject for the study, “We noticed that chat show hosts like Oprah seemed to be very good at conversation that bypassed most of the linguistic complexities. They had a repertoire of phrases that kept people talking, and even raised the intensity of their conversation, without much reference to linguistic details”
The actual system that Cowie is developing is called, the Sensitive Artificial Listener (SAL). SAL, can pickup on some facial animations, and can even pick up on different tones of voice. All of these different components, all modeled after Oprah’s linguistics.
While it looks as though we are pretty far from “The Matrix”. It’s so interesting to see how with computing technology, we can create near duplicates of our surrounding environment. It would be interesting to see how Da Vinci, Michaelangelo, and Van Gogh would think of us now. Because with advancements in duplicating reality through computers, we are one step closer to the marriage of art and technology.