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Spirit Rover Makes Longest Trip Yet
ivan1011001 writes "Spirit traveled just over 88 feet in an attempt to visit the crater "Bonneville" to look for evidence of water on Mars. Engineers had hoped the rover would travel 164 feet, but Spirit didn't cover the full distance because it spent more time than initially planned studying rocks and soil along the way. This is longer than its earlier PR of 70 feet."
at least it moves faster than my grandmother...
xao
http://TheHillforum.hopto.org
After successfully completing a journey of 88 feet yesterday, the Spririt Mars Rover completed a journey of 88 feet 2 inches today. This is a new Mars distance record.
Why did I lurk so long before registering for a Slashdot account? I could have had a Slashdot ID of less than 100000.
it was up on a hill, and the brakes malfunctioned...
Have anyone of them found any evidence of past weather yet?
Seems like everything they look at is of vulcanic origin.
(Time And)Relative Dimensions in space... for the uninformed :-)
:-)
Anyone else think it's sort of funny that you have a probe that travels millions of miles to another planet, and the news is that it's then travelled a further 88 feet
Simon.
Physicists get Hadrons!
If the Mars rover is wont to go off on its own accord to discover and analyze things instead of following the directions given to it by mission control, could this possibly have disastrous side effects?
What if there were an impending rock-slide and instead of maneuvering out of the way as mission control told it to, it decided to look at the shiny rocks instead and got crushed in the process?
A little 'intelligence' is important for these things to figure out how to move around correctly, but artificial 'curiosity' seems to be problematic.
I have been pwned because my
can't resist urge.
Go SPEED Racer! Go Speed Racer!
Sig it.
"Spirit! Quit playing in the dirt! We have 100 more feet to go!"
"(sad R2-D2 sound)"
Didn't the Soviet built lunar rovers go much further in a single day back in the early 70's? What sort of over-hyped/overly-specific record is this?
"And the award for longest roving in the past 3 weeks on a neighboring planet by an American robot who's name rhymes with 'kirit' goes to...."
I demand a recount!
"If you want to improve, be content to be thought foolish and stupid." - Epictetus
The latest information on Spirit's and Opportunity's adventures can be found here!
Are they sure it was 88 feet? Could've been meters...
It must be Thursday... I never could get the hang of Thursdays.
My grandmother in the last 5 years has had an average speed of 0.000004mph. This is because she moves only every now and then.
The Spirit rover does 0.00000000001mph on average since it landed on Mars because most of the time
it does nothing.
They need to give the remote controls to some punk kids that dont know its importance.
If they did that they would have found beagle,
discovered that Mars is just a shitty desert, overloaded Nasa's database of names for every shitty litte rock they find, and eventually drove
off a cliff giving us spectacular images of Mars!
The rover's stereo vision dynamically builds a 3D representation of its environment, and then figures out safe paths within that map.
That's all necessary because it just takes too long to specifically instruct each step (it's a 10 minute round trip at the speed of light to send instructions -- and so you want the rover to have some autonomy).
Here's what I do: Bitty Browser & Andromeda
88 'feet'?! You mean Mars hasn't gone metric?!
org.slashdot.post.SignatureNotFoundException: ewg
I think it is a combination of the two...
Mission control sends a command like:
"Go to Rock A"
"Extend Arm, place payload element X on Rock"
"Let Payload element X analyze rock A"
"Switch to Payload Element Y"
"Let Payload Element Y Analyze Rock A"
(...repeat for each element Mission control wants to use...)
"Stow Arm"
"Navigate at bearing of 110deg until Z time"
Each of the science payloads may take an unknown amount of time to perform it's task - the rock grinder probably moves at different speeds based on the density of the rock.
Also, the driving algorythm probably takes more time to analyze no-so-good paths than good paths.
Sticks and Stones may break my bones, but copyright will always protect me.
It had it's left turn signal blinking the entire way :)
Strictly speaking, that's not a domain of artificial intelligence, but pure computer vision. There are known techniques for building a map, given processed camera images, and there is usually no reasoning involved. Just a simple algorithm to find the shortest path. The search space is usually small enough not to warrant AI techniques.
Of course, it is possible that they are using higher-level AI techniques for finding the optimal path, but I doubt it as the classical image processing techniques are fast and robust enough for this sort of task.
Computers may not yet pass the Turing test, but it's pretty good that we've managed to get them up to pooch standard.
Panurge has posted for the last time. Thanks for the positive moderations.
Anyone who has tried to go for a walk with a 2 or 3 year old kid knows what I'm talking about. You want to walk, but the annoying little brat will stop and examine very carefully every piece of litter, little stone, gravel or mark on the floor. Half way through the whole thing you'll get tired and just go home.
The Spirit Rover breaks its record once again by travelling 185 feet - unfortunately, this was due to it getting a bit TOO close to the crater, and was 185 feet downwards.
Well, that seems to be the 'common' understanding of AI, but in the computer science (and other scientific fields), it has a more specific meaning. Otherwise, factoring large numbers would also be considered AI, although there is nothing intelligent about it, given a good algorithm. Finding that algorithm is what would require intelligence.
Here is a definition I like:
AI is the capacity of a digital computer or computer-controlled robot device to perform tasks commonly associated with the higher intellectual processes characteristic of humans, such as the ability to reason, discover meaning, generalize, or learn from past experience. The term is also frequently applied to that branch of computer science concerned with the development of systems endowed with such capabilities. --- Herbert A. Simon, Professor of Computer Science and Psychology, Carnegie Mellon University
I am nitpicking here, but given an algorithm to extract edges and corners from two images, using the camera calibration values to calculate distance, and creating a map based on these data does not require intelligence, and as such isn't strictly AI.
The robot still follows strict instructions which find the optimal path. It will not learn if this algorithm fails a certain number of times, it will not generalise to make future computation quicker, like a human would. It does not have a concept of the obstacles. It does not get more proficient after doing the same for a while. So, even though it's a brilliant example of applied computer vision and autonomous navigation, there is very little of what is considered AI involved. Hope this clears it up a bit.