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Robotics The Almighty Buck Science

DARPA Grand Challenge 2005 164

fishdan wrote to mention that the Darpa Grand Challenge is getting underway again. The qualifying rounds started yesterday. National media has picked up on the story, with pieces at the Washington Post and Seattle Times. From the Post: "The autonomous robotic vehicles began competing Wednesday in the first of a series of qualifying rounds at the California Speedway. Half will advance to the Oct. 8 starting line of the so-called Grand Challenge. The grueling, weeklong semifinals are designed to test the vehicles' ability to cover a roughly 2-mile stretch of the track without a human driver or remote control. Participants ranging from souped-up SUVs to military behemoths will be graded on how well they can self-drive on rough road, make sharp turns and avoid obstacles _ hay bales, trash cans, wrecked cars _ while relying on GPS navigation and sensors, radar, lasers and cameras that feed information to computers."
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DARPA Grand Challenge 2005

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  • by JakiChan ( 141719 ) on Thursday September 29, 2005 @11:56AM (#13676743)
    I had a chance to see the Volkswagen / Stanford entry while getting my VW serviced. That cart is pretty cool. There's a rack and a half worth of gear in the back and the shift knob has been modified to allow a robot arm to be attached. The engine is a 5 cylinder TDI and the VIN says it's a factory prototype. I heard that when the challenge is over the car will have to be destroyed since it certainly isn't US legal. And in a parody of the "Drivers Wanted" slogan it says "No Driver Required" on the side. :-) Seeing it in person certainly made waiting for my oil change fun.

    On a side note...I wish they'd let more diesel cars in the country. The chase car is another Touraeg but this one is a Canadian V10 TDI. It has something like 500 lb-ft of torque but gets about the same highway mileage as my small VW does.
  • by lightyear4 ( 852813 ) on Thursday September 29, 2005 @11:57AM (#13676765)


    This will be a MUCH more interesting contest if the teams do better than the last time around. (the best team only got 7 miles [imagiverse.org] out of 175 total.) Granted, even that is impressive given the circumstances.

    I wish the best of luck to all of those competing.
  • by op12 ( 830015 ) on Thursday September 29, 2005 @12:07PM (#13676853) Homepage
    Here's a picture [cnn.com] of the modified VW Touareg.
  • Video of MITRE entry (Score:4, Informative)

    by eludom ( 83727 ) on Thursday September 29, 2005 @12:10PM (#13676887) Homepage
    FYI there is a 5min introductory video clip of the the MITRE entry here:

          http://www.mitre.org/tech/meteor/ [mitre.org]

    I saw it a few months ago doing it's thing around the
    parking lot. It will be interesting to see how they
    do on a live course.

  • by robyn217 ( 575679 ) on Thursday September 29, 2005 @12:17PM (#13676960) Homepage
    Yeah, I just hope someone can finish the race. It looks like the best site out there to track the race is GrandChallenge.org [grandchallenge.org]. They have team write-ups and blogs.

    I know my money is on Austin Robot Technology. Vehicle "(Not Available)" sounds like it'll be a real winner. lol!

    -robyn [gearlog.com]

  • by itistoday ( 602304 ) on Thursday September 29, 2005 @12:17PM (#13676966) Homepage
    I just got off the phone with a team that's there. Apparently Stanford did the best in the semifinals so far, making it through the obstacle course without hitting a single cone and cruising at a comfortable 40 mph. Carnage Mellon, a favorite last year, actually did surprisingly bad and ended up hitting a lot of cones. The University of Florida also had a good run, only nicking a cone or two. It seems like it's gonna be a worthwhile race this year. And trust me, it is really difficult to make one of these machines.
  • by zappepcs ( 820751 ) on Thursday September 29, 2005 @12:19PM (#13676979) Journal
    YES, this task is THAT hard. If the military could simply throw money at the problem and get the solution, there would be no DARPA Grand Challenge competition at all.

    The simple fact is that while we use senses in our bodies to do things, the similar versions for robots and autonomous vehicles are crude, expensive, and no-one is quite sure how to make them work the way we think they should. Computer vision is becoming a big thing, and despite the millions of people working with it or on it around the globe, there is still no standard way to immitate what the human does with one eye, let alone two. Humans have that inner-ear thing, and this tells us many things: if we are vertical, falling, rising, moving forward or sideways... Our eyes do way more than a movie camera does. People are only now beginning to understand how many ways that we analyze the visual data presented to us through our eyes.

    The problems of autonomous ground vehicles are greater than that of planes because there is so much to run into, get stuck on, fall off of etc. Just writing some code to keep a toy robot from getting stuck under the kitchen table is a huge task without boatloads of sensory data and processing power.

    The tasks the DARPA GC vehicles are trying to accomplish ARE that difficult.

    There are two groups you can try if you are interested in finding out more about hobbyists that are working on these problems http://www.dprg.org/ [dprg.org] and http://www.seattlerobotics.org/index.php [seattlerobotics.org] . There are many others, of course, but these two are fairly active groups.
  • Go Team ENSCO! (Score:1, Informative)

    by JMUChrisF ( 188300 ) on Thursday September 29, 2005 @12:38PM (#13677177)
    www.teamensco.com

    Good luck to my former co-workers who are working with Ensco on the project. From what I hear, they're loving being out there and having a great week!
  • by blackcoot ( 124938 ) on Thursday September 29, 2005 @12:50PM (#13677300)
    I wouldn't say that this is an amazing failure of AI so much as an amazing failure to realistically estimate the real difficulty of AI and the mess of systems integration problems that accompany robotics (I happen to work for a company that's part of a GC team and specializes in autonomous robotics). Firstly, sensors suck. We are just now barely approaching video sensors that have the same resolution as the human eye, but at 9+megapixels a piece, you have an insane amount of numbercrunching to do before you've reduced a frame into useful information. Now repeat that at 60Hz and you now have an appreciation for where a large portion of the computing power is used. Now take three such cameras for multi-baseline stereo and terrain classification and you're talking 1.6 gigapixels per second that you have to process. You also have to find machines which can sustain 3.2GB/s or 4.8GB/s transfer rates (depending on whether you use YUV 4:2:2 or RGB 8 bit per channel imagery). Now toss in a couple LADARs scanning at 100Hz, 360 x 16 bit samples per scan line, a bunch of RADARs operating at 30Hz, an IMU, two GPS units (one for the IMU, one for you to use)... you begin to see some of the problems. You need all those different sensing modalities because the fundamental truth of sensors is that they lie. You can do things to get reasonable estimates up to some confidence, but realistically what you're seeing are random values near the real values. Sensors fail, so you need back-up systems, and some way of determining which sensors failed (or rather, a way to change your beliefs about which sensors are reliable).

    In short, the classical AI part (most folks seem to use D* + reactive controls) is not where 90+% of the processing bandwidth is used, you need that power for sensing and for guaranteeing that your control loops cycle at at least some minimum frequency to guarantee safe operations.

    That said, there's a lot the gov't can do to make this problem a lot easier to solve. Standard bus designs (like FireWire) which can power most of the sensors on the bus are a really great start. Open protocols from the wire up are also important. A push towards integrating more intelligence in the sensors (embedded FPGAs which allow you to do optional processing on the raw signals coming in) can help quite a bit. Research into high-speed busses that allow you to pretend you have a shared memory multiproc will also help a lot. Finding a way to reliably and efficiently move processing algorithms into FPGAs or microcontrollers will also help to distribute the workload and reduce overall bandwidth and processing requirements. Unfortunately, there's still a lot of fundamental algorithm work to be done before you get to that point, but as certain algorithms becomes standardized this will become a lot more feasible.
  • by Bob3141592 ( 225638 ) on Thursday September 29, 2005 @01:09PM (#13677483) Homepage
    What this tells me is that today's computer technology still has trouble, in many cubic feet of space, and with practically unlimited electrical power, to find realtime solutions for a problem that even severely IQ handicapped humans handle routinely while balancing a McMeal on their knees and keeping up a cell phone conversation. I would wager that, with a fair amount of training and suitable controls, even a dog could handle the task. So...

    The AI systems are competing against 500 million years of evolutionary development. The computer systems being used are serial processors optimized for problems of a very different nature. Just trying to explicitely state the problems of what an autonomous vehicle is supposed to do in sufficient detail is daunting, let alone trying to solve those problems.

    A human spends years as an infant trying to sort out how the world works, and decades after that puzzling out the details. And despite all the experience we have with out own thinking and observing others, we still don't know what intelligence is about or how it works.

    Yes, it is a very hard problem
  • by not5150 ( 732114 ) on Thursday September 29, 2005 @01:37PM (#13677773)
    Tomshardware is posting daily updates live from the Fontana Speedway http://www.tomshardware.com/hardnews/20050929_1259 19.html [tomshardware.com]
  • Cornell's Team (Score:2, Informative)

    by spenceM7 ( 683840 ) on Thursday September 29, 2005 @02:27PM (#13678265)
    My home team, Cornell, is currently in second place at the qualifiers, knocking only over one cone on the obstacle course.

    You can read their blog here [blogspot.com], or find their website (with technology writeups) here [cornell.edu].

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