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Researchers at the University of California, San Diego, have created a new, relatively low-cost virtual reality device that allows users not only to see a 3D image, but “feel” it, too.

The Heads-Up Virtual Reality device (or HUVR, pronounced “hover”) couples a consumer 3D HDTV panel with a half-silvered mirror to project any graphic image onto the user’s hands and/or into the space surrounding them. With his or her head position tracked to generate the correct perspective view, the user maneuvers a touch-feedback (haptic) device to interact with the generated image, literally touching the image’s angles and contours as if it was a tangible three-dimensional object.

HUVR is ideal for tasks that require hand-eye coordination and is well-suited to training and education in structural and mechanical engineering, archaeology, and medicine. The device could be used, for example, to visualize and manipulate a 3D image of a person’s brain taken from an MRI, or an artifact too fragile or precious to be physically handled.

“By using HUVR’s touch-feedback device — which is similar to a commercial game control — a physician could actually feel a defect in the brain, rather than merely see it,” explained Research Scientist Tom DeFanti. DeFanti, who is affiliated with the UC San Diego division of the California Institute for Telecommunications and Information Technology (Calit2), created the device with Calit2’s Virtual Reality Design Engineer Greg Dawe. And, DeFanti added, “this can be done over the networks, sharing the look and feel of the object with other researchers and students.”

A re-engineering of work done by Bell Labs’ Ken Knowlton more than 30 years ago (as well as later systems made by many researchers with 21” cathode ray tube monitors), HUVR also evolved from PARIS, a system created 12 years ago by DeFanti, Dawe and their colleagues and students at the Electronic Visualization Laboratory, University of Illinois, Chicago.

PARIS, or Personal Augmented Reality Interactive System, used a projection technology similar to HUVR, but was low-resolution, too big to move, and expensive. It required the Silicon Graphics, Inc. computers of the time to render the images and cost upwards of $100,000 (PARIS is still in operation today, but is now driven by a game PC).

The recent availability of 55-inch active stereo panel TVs was the key to making HUVR, which is essentially a more lightweight, portable, and — at about $7,000 (without head tracking) — a much cheaper version of the PARIS-based technology. Constructed from a $2300 Samsung 3DTV panel available at most retail electronics stores, HUVR also offers better brightness, contrast, and visual acuity than PARIS, all of which increase user satisfaction.

Although passive stereo 3D HDTVs have been available for about a year — allowing DeFanti and Dawe to build a new VR device called NexCave — active stereo is needed for HUVR. Active stereo generates separate left- and right-eye images that can bounce off mirrors and are separated into left- and right-eye views by the user’s active eyewear, which blink in synchrony with the 3D HDTV’s 120Hz images. The polarization used in passive stereo will not stay polarized when reflected off a mirror, hence the need for active stereo in HUVR and its precedents.

The next step in HUVR’s evolution is to create a less expensive, reasonable quality head tracker suited to a desktop device (commercially available trackers currently range from $5,000 to $20,000).

The research and development of HUVR is supported by Calit2 collaborator King Abdullah University of Science and Technology, as well as funding from the Calit2 Strategic Research Opportunities Program.

via Dr. Dobb's

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via Engadget

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via Automotive News

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via Engadget

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via The Wall Street Journal