varying conditions. This reduces the need for precise setup for the robot to operate correctly. Brian Carlisle, CEO of
Adept Technologies, a Livermore, California,
factory-automation company, points out that "even if labor costs were
eliminated [as a consideration], a strong case can still be made for automating with robots and other flexible
automation. In addition to quality and throughput, users gain by enabling rapid product changeover and evolution that
can't be matched with hard tooling."
One of AI's leading roboticists,
Hans Moravec, has founded a company called Seegrid to apply his machine-vision
technology to applications in manufacturing, materials handling, and military missions.
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Moravec's software enables
a device (a robot or just a material-handling cart) to walk or roll through an unstructured environment and in a single
pass build a reliable "voxel" (three-dimensional pixel) map of the environment. The robot can then use the map and its
own reasoning ability to determine an optimal and obstacle-free path to carry out its assigned mission.
This technology enables autonomous carts to transfer materials throughout a manufacturing
process without the
high degree of preparation required with conventional preprogrammed robotic systems. In military situations
autonomous vehicles could carry out precise missions while adjusting to rapidly changing environments and battlefield
conditions.
Machine vision is also improving the ability of robots to interact with humans. Using small, inexpensive cameras,
head- and eye-tracking software can sense where a human user is, allowing robots, as well as
virtual personalities on a
screen, to maintain eye contact, a key element for natural interactions. Head- and eye-tracking systems have been
developed at Carnegie Mellon University and MIT and are offered by small companies such as Seeing Machines of
Australia.
An impressive demonstration of machine vision was a vehicle that was driven by an AI system with no human
intervention for almost the entire
distance from Washington, D.C., to San Diego.
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Bruce Buchanan, computer-
science professor at the University of Pittsburgh and president of the American Association of Artificial Intelligence,
pointed out that this feat would have been "unheard of 10 years ago."
Palo Alto Research Center (PARC) is developing a swarm of robots that can navigate in complex environments,
such as
a disaster zone, and find items of interest, such as humans who may be injured. In a September 2004
demonstration at an AI conference in San Jose, they demonstrated a group of self-organizing robots on a mock but
realistic disaster area.
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The robots moved over the rough terrain,
communicated with one another, used pattern
recognition on images, and detected body heat to locate humans.
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