<br><br><div class="gmail_quote">On Tue, Jun 3, 2008 at 5:44 AM, Stroller <<a href="mailto:linux.luser@myrealbox.com">linux.luser@myrealbox.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d"><br>
On 2 Jun 2008, at 12:06, Mathieu Rochette wrote:<br>
><br>
> I recently discover the foxytag project . I'm wondering if this<br>
> apps could run on the freerunner, if so I'll definitly buy one :D<br>
> amAze will soon integrate foxytag but I think the software<br>
> requierement are the same as each apps is a java-based.<br>
><br>
> I don't know if a jvm is available for openmoko, and I think that<br>
> maybe java apps for mobile phone require specific library.<br>
> can anyone tell me a bit about all this ?<br>
<br>
</div>Looks a bit ugly to me.<br>
<br>
I've thought about this type of application a little bit because I'd<br>
love to write one and IMO this type of program doesn't need a GUI.<br>
<br>
The program should, IMO, just run as a daemon, loading the gatso<br>
locations at startup, and checking continuously to see if any are<br>
nearby. There's no need to see the location of the gatso, it should<br>
merely emit audio upon approach to the danger zone. The audio can<br>
repeat as the unit approaches the gatso, getting louder with<br>
proximity. This somewhat accommodates whether you're driving straight<br>
at the danger zone, or whether it appears likely to pass nearby -<br>
without streetdata it's impossible to know whether the road you're on<br>
continues straight or curves, so one can't know for sure whether the<br>
camera will be passed or avoided, but if the alert sound increases<br>
volume based on rate-of-distance-change (congruity?) it'll be pretty<br>
intuitive to the driver, I think (diagram here if I had the time). I<br>
don't think it's at all necessary to incorporate roadmap data - I<br>
think the system can provide perfect warning without it, based on<br>
direction and speed-of-approach.</blockquote><div><br>that's a damn good idea! <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
I don't really see any benefit of a visual display and it gets in the<br>
way of using any other GPS application (such as Google maps, which is<br>
sure never to carry camera-location data); I'm cynical over amazegps<br>
- why is it free if it's any good? Isn't it going to pop up<br>
advertising all over my phone?<br>
<br>
Last time I looked into this - perhaps two years ago - I'm sure there<br>
was a free Gatso camera location database available, for the UK, at<br>
least. However all I can find now is <a href="http://pocketgpsworld.com" target="_blank">pocketgpsworld.com</a> and<br>
<a href="http://www.scdb.info/en/" target="_blank">www.scdb.info/en/</a>, which both take user-submitted data and then<br>
charge a subscription back for it. At least the <a href="http://pocketgpsworld.com" target="_blank">pocketgpsworld.com</a><br>
one does look like a pretty good source of data, regularly updated,<br>
covering Europe & used by off-duty coppers themselves, but it's not<br>
free in any sense of the term. Looking on <a href="http://scdb.info" target="_blank">scdb.info</a> at a road I<br>
travelled down this evening, I'm immediately pretty sure I can spot<br>
errors - regular road surveillance cameras marked as speed-traps.<br>
<br>
The download link at <<a href="http://www.gps-data-team.com/poi/united_kingdom/" target="_blank">http://www.gps-data-team.com/poi/united_kingdom/</a><br>
safety/GATSO_UK.html> has CSV files with 4200 locations (80% UK<br>
coverage?), but it's not clear if these are up-to-date, as it seems<br>
to be implied that they come from <a href="http://scdb.info" target="_blank">scdb.info</a>. However the same site<br>
has lists of accident blackspots which may benefit those concerned<br>
about road safety who feel themselves immune to the risk of<br>
prosecution. <<a href="http://www.gps-data-team.com/poi/united_kingdom/safety/" target="_blank">http://www.gps-data-team.com/poi/united_kingdom/safety/</a><br>
Accident_Black_Spots-UK.html><br>
</blockquote><div><br>donwloading the file to offline access is good only if you want to know about fixed speed cam.<br>what I want is to know about mobile speed cam (eg: policemen check speed for only two hours at some spot).<br>
and these cam can't be register in POI files; <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
The FoxyTag collaborative thing sounds productive, so an alternative<br>
FoxyTag client might be appealing. It looks like a genuine not-for-<br>
profit project, but it's not obvious that one can use it offline -<br>
ideally one would download a complete data-file and upload one's<br>
corrections later. I don't really want to have to take my hands off<br>
the wheel to mark my changes to a nearby camera - I'd much rather<br>
click on a map on a webpage later to register my votes, and if<br>
marking a new camera I'd rather stop my car & park to ensure I get as<br>
accurate a fix as possible </blockquote><div>again, register votes on a webpage later can't be use for mobile speed cam. <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
(but "Tags posted by FoxyTag are<br>
directional, so, tags posted for users driving in the opposite<br>
direction won't be signalized to you" - what happens if I'm<br>
stationary?).</blockquote><div>you can't register a POI when you're under X km/h (X=I can't remember)<br> <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
<br>
Let's say I know that a local camera is only used for video<br>
surveillance of road traffic (sadly these too are common in the UK) -<br>
it is only for awareness of traffic jams (I read that<br>
<a href="http://trafficmaster.co.uk" target="_blank">trafficmaster.co.uk</a> may site such cameras) and does not register<br>
speed. But nevertheless many users who know nothing about the<br>
different types of cameras keep registering the camera location on<br>
the collaborative system. On a system more like OpenStreetMap the<br>
wiki features allow me to post "don't mark this as a gatso, it<br>
isn't", upload a photo of the camera in question and, in the event of<br>
dispute, a moderator can block or ban users who get involved in "edit<br>
wars". The contentiousness of gatso-warning alarms suggests that it<br>
is unlikely to be incorporated into OpenStreetMap, however - see<br>
<<a href="http://wiki.openstreetmap.org/index.php/Proposed_features/" target="_blank">http://wiki.openstreetmap.org/index.php/Proposed_features/</a><br>
Speed_trap>. Personally, I think this is well and good - the issue<br>
appears to evoke strong views without much room for consensus (the<br>
split of opinion seems to be 50/50) and it's less divisive to just<br>
have a dedicated site for those who want speed-camera data.</blockquote><div>I don't think foxytag has something like this <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
<br>
Substantially, FoxyTag is written in Java so it can run on a variety<br>
of closed mobile phone platforms - on OpenMoko we can do far better,<br>
I think. The phone software is not difficult to write, and alone<br>
would not be deemed sufficiently complex to justify it as a final-<br>
year undergraduate project.<br>
<br>
The location data is a different matter and, with 5,000 cameras in<br>
the UK alone, it's not trivial. There are likely users with many more<br>
local cameras who could contribute more, but I could probably only<br>
think of 5 cameras to contribute to a database; some people will wish<br>
to make use of the system without any location contributions, so I'd<br>
guess 1000 users is a reasonable estimate to build up a usable<br>
database, for the UK alone!<br>
<br>
If anyone knows of other sources of speed-camera location data then<br>
please post them. It's likely that someone else will have something<br>
like this working on OpenMoko before I get my ass in gear enough to<br>
do anything about it. That's why I post my thoughts any time I see<br>
something about GPS - hopefully I may influence the motivated author.<br>
Foxytag do give an email address on their participate page, if "you<br>
want to do a new client that is compatible with FoxyTag", so should<br>
one get a proof-of-concept working on OpenMoko they're surely worth<br>
contacting.<br>
<font color="#888888"><br>
Stroller.<br>
</font><div><div></div><div class="Wj3C7c"><br>
<br>
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</div></div></blockquote></div><br><br>A lot of limitation are due to the foxytag apps --- register only when you are driving, and (almost) just when you're in front of the POI.<br>I agree that an openmoko client could be >really< interessting. moreover this will resolve the external/internal gps problem.<br>
<br clear="all"><br>-- <br>Il y a 10 types de personnes, ceux qui savent, et ceux qui ne savent pas...