Re: Re: webots contest

robotman2010 wrote:

>  
>
>>>>- How noisy is the GPS measurement in the online matches?  It's 
>>>>perfectly accurate offline.  We've started using it for some things 
>>>>recently, which seem to work fine online as well.  The documentation 
>>>>says the the position measurements are noisy online, but I haven't seem 
>>>>it seeming to affect anything in the online matches.
>>>>
>>>>
>>>>        
>>>>
>>>Actually, it is not noisy online either. We never implemented this noise 
>>>for contest matches... Shall we do it before the end of the contest ?
>>>      
>>>
>>Here I'd disagree with Robotman, for reasons of personal preference.  We 
>>have a vision system for toddler, and it works quite well.  However, I 
>>really have no interest in vision.  For me, reliable GPS allows us to do 
>>extra things that we wouldn't be able to do with just vision.  Actually, 
>>I would be perfectly happy to have GPS data for the opponent available 
>>as well.  That would allow us to do even more things that just aren't 
>>reliable at all with vision.
>>
>>    
>>
>
>I see your point but would like to clarify my own. The way I see it the availablity of the GPS is due to an unenforced rule. It's clear from the correspondance on the mailinglist from the time the GPS was introduced that its purpose was to enable inclinometers only, not positioning. Thus it's clear that the use of the word "noisy" regarding the GPS in the documentation implies "unusable" rather than "minor limitation to precision". This is the assumption under which we have devoloped our vision system (for our not yet submitted robot), and to allow the GPS at this moment would de facto be an arbitrary rule change undoing the tactical advantage of having such a vision system (whatever this advantage may be). Somehow it doesn't seem fair. It's true that the GPS enables far more powerful abilities but it would be on the expense of realism, but more importantly, if such a rule change takes 
 place it should be at the beginning of the contest, not the end.
>
>  
>
Ou goal is to have a realistic robot model. Hence such a precise GPS 
will disappear sooner or later (we don't plan to provide the position 
information for the opponent robot, as no common real robotics device 
can achieve this). I agree such a change should not occur at the end of 
the contest. So, we will rather introduce it at the beginning of the new 
edition of the contest.

-Olivier



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