Re: [simspark-devel] New User Manual and Wiki

[Yuan Xu <xu...@in...>]

Hi Stefan,

The reason of 10 lines modeled middle circle is only because it is the 
simplest way.
In the case of real robot ( image processing ), circle can be combined 
by small lines or recognized directly by special methods.

You can find the description of middle circle in 
rcssserver3d/data/rsg/agent/fieldring.rsg

Best Regards,
Xu, Yuan


On 05/12/2011 03:45 PM, Stefan Glaser wrote:


> Hallo all,
>
> I'm currently updating the descriptions in the wiki according to the new
> release. I was able to look up / get most of the information I was
> looking for, but two questions are still not clear to me, which I now
> want to ask you in this mail.
>
> First of all, I wanted to ask for the unit transmitted by the
> accelerometer. I wanted to document that it now provides RAW-data, but
> it's unclear to me, what's the real meaning of that. Can someone give me
> a pointer on that?
>
> The socond problem I'm unclear about is the description of the field
> lines. I visualized the field lines to get some idea, where they are
> located and why the agent sees so much of them. Then I realized that the
> middle circle is modelled with 10 small field lines. If the complete
> circle is seen (what is often the case for most of the robots during a
> game), this results in 20 coordinates located around a relatively small
> spot in a very simple arrangment, also supported by the middle line. I
> wonder about the purpose of putting in this kind of modelling of the
> middle circle. 20 coordinates is a lot of traffic - in fact close to 50%
> of the currently visible field lines are needed to model the middle
> circle. I'm also not sure how realistic this is compared to a real
> scenario... but I have no experience with that. But since I expect the
> vision-errors to be applied separately on each coordinate, it should be
> absolutely no problem to do e.g. a camera calibration within a few cycles.
> Overall I struggle a bit with giving a clear decription to the field
> lines. The normal lines don't need a special description, but if the
> middle circle stays this way, I have to add some special description to
> the arrangement of these lines.
>
> Best regards,
> Stefan
>
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