[Openstreetmap] GPS tracks, Ortho Photos, etc.

wabanstar waban_star at yahoo.com
Sat Feb 19 18:00:04 GMT 2005


TrackMaker is good freeware for downloading GPS
tracks, it can also upload raster such as, perhaps,
orthophotos or maps; also alows hand digitization. In
the US looking in gov, state, local, archives, or
libraries can turn up orthophoto projects. Ortho
photos commercialy taken by special large format
cameras, I would talk to a commercial source to find a
camera and get some insight into their processes.
Driving roads with a GPS logging to a laptop is a
preffered method for capturing street tracks. Use a
voice recorder to log street names and addresses, a
video to capture exit signage and lane departure
points. ESRI has a free (not open) software for
posting tracks to the web. There is a lot of tracks
available from govs and localities that have already
done data-logging. If you can get them to sign off on
their resource you can use it. Searching the web shows
a lot of GIS that can be enquired after for making
available.

--- openstreetmap-request at vr.ucl.ac.uk wrote:

> Send Openstreetmap mailing list submissions to
> 	openstreetmap at vr.ucl.ac.uk
> 
> To subscribe or unsubscribe via the World Wide Web,
> visit
> 
>
http://bat.vr.ucl.ac.uk/cgi-bin/mailman/listinfo/openstreetmap
> or, via email, send a message with subject or body
> 'help' to
> 	openstreetmap-request at vr.ucl.ac.uk
> 
> You can reach the person managing the list at
> 	openstreetmap-owner at vr.ucl.ac.uk
> 
> When replying, please edit your Subject line so it
> is more specific
> than "Re: Contents of Openstreetmap digest..."
> 
> 
> Today's Topics:
> 
>    1. Satellite cost/benefit (SteveC)
>    2. Re: Satellite cost/benefit (Jo Walsh)
>    3. Re: Satellite cost/benefit (Mark Simpkins)
>    4. Free software grants (Hugh Barnard)
>    5. Re: Complimentary project - Freemap (Jo Walsh)
> 
> 
>
----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 19 Feb 2005 14:40:35 +0000
> From: SteveC <steve at fractalus.com>
> Subject: [Openstreetmap] Satellite cost/benefit
> To: geo-coord at lists.okfn.org,
> openstreetmap at vr.ucl.ac.uk
> Message-ID: <20050219144035.GB24400 at fractalus.com>
> Content-Type: text/plain; charset=us-ascii
> 
> Hi everyone,
> 
> So I'm on the fence about it, but a few people have
> mentioned in person
> that they think that buying satellite pictures and
> doing feature
> extraction using $METHOD is a bit pointless, and I
> can see where
> they're coming from.
> 
> The geo-coord archive is down, I was looking for
> figures but I seem to
> remember 400UKP or so was being said. Maybe more,
> maybe less. Irrespective
> of the amount I was thinking it'd be a good idea to
> do a cost benefit of
> our methods. Sorry if someone has already, I
> couldn't find it.
> 
> When I say 'our' I really mean 'whoever wants to
> give money to further
> the open geodata cause'.
> 
> First, whats the goal? Rufus mentioned (to
> paraphrase) 'getting
> something up and running as a demo'. Thats as good
> as any, but I'd like
> to look a bit further in to the future too.
> 
> Second, how do you sell the idea of giving money?
> Buying satellite data
> is a sexy banner to call people to. Buying gps units
> for random people
> isn't, but it might help more. I don't know.
> 
> I'll take a stab at some cost/benefits and try to
> remember what people
> said:
> 
> satellite imagry
> ----------------
> 
> benefits: sexy. large number of streets, IF you can
> do the extraction.
> Quick, IF you can do the extraction. We can use the
> image and data for
> other things, maybe.
> 
> costs: 400UKP. unproven that it'd work well, need
> someone to look at doing
> nonlinear transforms between an image to lat/lon
> 
> tertiary: its not very socially inclusive. One
> person goes and gets an
> image, someone sits down and does GA extraction or
> maps streets on top.
> 
> 
> buying gps units ( **for example**, I'm sure there
> are other things
> possible)
>
--------------------------------------------------------------------
> 
> scenario: buy a load of gps units and give them to
> people without them,
> on the basis that they 'do stuff' with them. I'm
> sure such people can be
> found easily, who find a unit just over their price
> range.
> 
> benefits: long term usage, multiple uses, socially
> inclusive, gets lots
> more people involved
> 
> costs: say 400UKP's worth of gps units off of eBay,
> or say the person pays
> half the cost. would take a bit longer to get a
> 'demo' up.
> 
> 
> 
> using out of copyright data
> ---------------------------
> 
> benefits: free, easy to obtain
> 
> costs: out of date data
> 
> 
> and so on.
> 
> In the end, it all comes down to who has the money
> and what they think
> they should do with it. Other than buying gps units,
> what else could be
> done with some amount of money? I've presented this
> as an either/or but
> you can do some combination.
> 
> Comments? Ideas?
> 
> have fun,
> 
> SteveC steve at fractalus.com
> http://www.fractalus.com/steve/
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 19 Feb 2005 08:07:03 -0800
> From: Jo Walsh <jo at frot.org>
> Subject: Re: [Openstreetmap] Satellite cost/benefit
> To: SteveC <steve at fractalus.com>
> Cc: geo-coord at lists.okfn.org,
> openstreetmap at vr.ucl.ac.uk
> Message-ID:
> <20050219160703.GD25651 at vishnu.tridity.org>
> Content-Type: text/plain; charset=us-ascii
> 
> On Sat, Feb 19, 2005 at 02:40:35PM +0000, SteveC
> wrote:
> > The geo-coord archive is down, I was looking for
> figures but I seem to
> > remember 400UKP or so was being said.
>
http://bat.vr.ucl.ac.uk/pipermail/openstreetmap/2005-February/000244.html
> 
> - minimum buy from Ikonos for this area is about
> 1075 dollars. (600
>   quid?) OKFN and wirelesslondon both offered to
> help. so we could do
>   this for less than 200 more quid. but it's not
> even a large area of
>   london. ( http://space.frot.org/carterra.png )
> 
> > When I say 'our' I really mean 'whoever wants to
> give money to further
> > the open geodata cause'.
> - i met a donor, or right now the non-project donor,
> on tuesday. he
>   had a wild look in his eyes and talked about model
> aeroplanes. How
>   long, i wonder, would a model plane loaded with
> electronics last in
>   london's skyscape... 
> 
> > Second, how do you sell the idea of giving money?
> Buying satellite data
> > is a sexy banner to call people to. 
> i think giving is not tied to Ikonos, as long as a/
> that is clear and
> b/ we provide total accountability for any
> purchases. GPS collection
> could be 'sexy' in the right context: e.g. cyclist
> groups like the
> Tower Hamlets Wheelers of the Camden CC could love
> this; we could
> introduce a street scoreboard for cycle couriers;
> etc. 
> 
> > tertiary: its not very socially inclusive. One
> person 
=== message truncated ===



	
		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - You care about security. So do we. 
http://promotions.yahoo.com/new_mail




More information about the talk mailing list