Re: [talk-au] Our own satellite imagery?
2009/9/28 Ross Scanlon i...@4x4falcon.com: I like it. Use the autopilot from here: http://paparazzi.enac.fr/wiki/Main_Page The wired editor also has a site up that sells autopilot kit: http://www.diydrones.com/profiles/blogs/ardupilot-main-page with one of these: http://www.rcwarehouse.com.au/productinfo/?prod_id=GPMA1180++ The wired editor had one of these: http://castlehillhobbies.com.au/component/page,shop.product_details/flypage,shop.flypage_modern/product_id,5637/category_id,117/manufacturer_id,0/option,com_virtuemart/Itemid,1/ About the same price, slightly bigger wing span but what I don't know is which would give better flight times... Capture the transmitted video, at the base station, as single frame with lat/long/hdop encoded in the exif data with little or no need for manual georeferencing. You would decrease your flight time or increase the payload weight to cope with the extra power needed for the live video feed, also RC electronics and electric motors can interfere with transmitted images, see the videos on this page: http://www.rangevideo.com/index.php?main_page=product_infocPath=8products_id=98 I'm still trying to work out if a HD video camera or a 10MP+ camera would be better, both types of cameras weigh only a few hundred grams including battery and you could trigger the shutter from the onboard computer. Program a staggered line ahead (roads) or grid (towns) search pattern and you could cover most rural roads and towns in a short time. And water ways and farms and other land uses for that matter. Sounds like fun and the airframe is cheap enough to have a couple for when you break it. Or cheap enough to have a few in the air at the same time to decrease the time needed for coverage, although this might need multiple pilots to be legal, not sure. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
Just found this video, HD camera mounted to a blimp and it gives you some examples of metres per pixel at various heights, up to 318m. It doesn't appear that they are using a fish eye lense, so at a guess you might be able to get a similar scope from 150m as you do from 300m. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/27 John Smith deltafoxtrot...@gmail.com: Just found this video, HD camera mounted to a blimp and it gives you some examples of metres per pixel at various heights, up to 318m. It doesn't appear that they are using a fish eye lense, so at a guess you might be able to get a similar scope from 150m as you do from 300m. http://www.youtube.com/watch?v=Xt37RfFJEcs ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
A cheaper option than blimps brought up on the talk list was covered in a BBC doco: http://www.cropcam.com Only US$7000 Based on some of their 400ft sample imagery: http://www.cropcam.com/images/samples/electrical-tower-nest.jpg and some quick back of the napkin type math it looks like you can get 2-4cm/pixel fairly easily, each image seems to be about, again some quick and dirty math, about 120m wide shots. These model planes do about 60km/hr, so with 50% overlap it would take about 10-15mins to do 1 sq km. A cheaper alternative would be building our own using this open source project: http://paparazzi.enac.fr/wiki/Solar-Storm They claim 145mins flight time on this plane, which potentially is 8-10sq km, although with enough spare batteries you could do spend entire day and potentially cover 40-50 sq km... Not sure what these cost, but the editor for wired magazine claims to have built a $600 UAV with autopilot: http://fora.tv/2009/05/30/DIY_Drones_with_Chris_Anderson There is a photo in his presentation where you can read the number plate on a car, and this is using a fairly basic camera. He also flew it over the google campus in San Francisco and pointed out they had photoshopped their logo on top of a pool to make it look like their pool had the google logo... At $600/setup we'd only need to cover 50 sq km to break even with sat imagery, not to mention sat imagery is at best 50cm/pixel, the $12/sq km imagery is 2.4m colour I believe, or 50cm BW. Obviously there is potentially a lot of other expenses involved, travelling etc, you have to actively monitor any UAV even if they are autopiloted due to CASA regulations, they must be in sight at all times etc. Due to restrictions around airports, 3 nautical miles, this would most likely be best for regional areas, which funnily enough currently have the worst imagery available. It should also be possible to cover outer suburbs of metro areas where the most development is likely to be too. I still think this could be funded by, including paying one or more people to do this, their travel expenses and so on, by a sponsor or someone wanting to get hi-res imagery on the cheap. The big benefits of doing it ourselves compared to purchasing imagery is the images won't have any cloud obstructions, the resolution is much much higher, there would be no restrictions on what we can do with the imagery after we use it to make maps and it would be current, rather than imagery from 3+ years ago like yahoo currently shows. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/27 terryc ter...@woa.com.au: John Smith wrote: This gives us some basic specs to figure out what we'd need either to build or buy one, combined with a HD camera and low enough to the ground we wouldn't need to worry about clouds etc. For comparison, you really should compare buying/renting your own aircraft and flying it around Australia. This is where the detail aerial images that are behind google come from. That name as the bottom is the company that stitched them together. If we had a UAV blimp capable of operating in some moderate wind speeds it should be possible to program it to do overlapping areas, possibly a lot cheaper than sat imagery. Sydney is 1788 sq km according to wikipedia at $12/sq km comes out at about $21,000 which is only a small area of NSW let alone Australia. Also something just occurred to me, the imagery could possibly be licensed to others to further fund the project. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
John Smith wrote:
Sydney is 1788 sq km according to wikipedia at $12/sq km comes out at
Can you explain the $12/sqkms.
(That 1788 sqkms sounds awfully small to me, but anyway)
about $21,000 which is only a small area of NSW let alone Australia.
Also something just occurred to me, the imagery could possibly be
licensed to others to further fund the project.
Is that possible under OSM?
(There is also the question of the established competition).
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Re: [talk-au] Our own satellite imagery?
2009/9/27 terryc ter...@woa.com.au: John Smith wrote: Sydney is 1788 sq km according to wikipedia at $12/sq km comes out at Can you explain the $12/sqkms. Sat imagery with a non-profit discount is about US$12/sq km (That 1788 sqkms sounds awfully small to me, but anyway) I looked again area is 12144.6 km² (I really must stop emailing late at night), so at US$12/sq km = $145,000 The prices must have dropped compared to what is on the OSM wiki which estimated the price at $300k Is that possible under OSM? We'd need a legal entity to do it under, however there is nothing I know of that would prevent us from on selling/licensing assets the legal entity produces to further fund itself. (There is also the question of the established competition). This is the question, can we provide our own imagery cheaper than others already doing it? Which is probably yes, at that point could we use it as a funding source? Instead of onselling/licensing the imagery we could see if Yahoo or someone is interested in the results and willing to fund us to do it... ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/27 Babstar debian-l...@blueturtles.com: One thing to consider is that the photography won't actually need to cover the *entire* state. Given the way most rural towns work, it would just need the point-to-point connections to cover the important roads between towns as well as the towns themselves. This vastly reduces the area required to get the most important features. That assuming we don't want to do most/all of Australia so we can plot land uses on maps too... I am in a position to be able to the flying if needed for free, however the majority of the cost is for the hire of the aircraft. The biggest issue is how to mount the camera equipment in the aircraft to get suitable images. I could do some further investigations if this was a path we were likely to go down. Judging by the UK experiment into this I don't think hiring a plane would be the most cost effective option, also the only way to do proper photos without modifying an aircraft is to do sharp banking so this would limit the amount of useful time in the air and co-ordinating the collection of imagery etc. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
$150 gives you a feed from space... ;)
http://www.universetoday.com/2009/09/21/reaching-near-space-for-less-than-150/
jim
On Sun, Sep 27, 2009 at 11:17 AM, John Smith deltafoxtrot...@gmail.com wrote:
2009/9/27 terryc ter...@woa.com.au:
John Smith wrote:
Sydney is 1788 sq km according to wikipedia at $12/sq km comes out at
Can you explain the $12/sqkms.
Sat imagery with a non-profit discount is about US$12/sq km
(That 1788 sqkms sounds awfully small to me, but anyway)
I looked again area is 12144.6 km² (I really must stop emailing late
at night), so at US$12/sq km = $145,000 The prices must have
dropped compared to what is on the OSM wiki which estimated the price
at $300k
Is that possible under OSM?
We'd need a legal entity to do it under, however there is nothing I
know of that would prevent us from on selling/licensing assets the
legal entity produces to further fund itself.
(There is also the question of the established competition).
This is the question, can we provide our own imagery cheaper than
others already doing it?
Which is probably yes, at that point could we use it as a funding source?
Instead of onselling/licensing the imagery we could see if Yahoo or
someone is interested in the results and willing to fund us to do
it...
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Re: [talk-au] Our own satellite imagery?
From this website: http://www.skyshipsremote.com/airships.htm UK based company says in the UK there is an altitude limitation of 400ft (~130m) for UAV aircraft, not sure if the same is true in Australia though. If it is we can probably still cope with this via fish eye lenses like the camera at the bottom of this page: Applicable AU rules: http://www.casa.gov.au/scripts/nc.dll?WCMS:STANDARD::pc=PC_91039 One way to go about capturing the images: http://tldp.org/HOWTO/html_single/Webcam-HOWTO/ I had set up something along these lines with lat/long encoded onto it but found the resolution of the camera too low. With some of the new 10M pixels webcams it may fix that. -- Cheers Ross ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/27 Ross Scanlon i...@4x4falcon.com: Applicable AU rules: http://www.casa.gov.au/scripts/nc.dll?WCMS:STANDARD::pc=PC_91039 Same reg as the UK, maximum operating ceiling of 400ft for UAV aircraft. Tethered balloons (and kites) are allowed up to 500ft... Apart from any restricted air space around airports it most likely wouldn't be practical for areas with tall buildings, but it would be fine for land use etc, then it's just a matter of programming it with way points and digital elevation information or a laser range finder to estimate hieght. Having 4 ranger finders (down, front left, right) and/or some kind of radar, might be useful to avoid collisions. One way to go about capturing the images: http://tldp.org/HOWTO/html_single/Webcam-HOWTO/ I had set up something along these lines with lat/long encoded onto it but found the resolution of the camera too low. With some of the new 10M pixels webcams it may fix that. The other option is a HD digital video camera, even though the frame sizes aren't as big we'd get a lot more of them. These cameras are now reasonably priced and combined with a fish eye lense plus gyro stabalised mount that always points vertical it's ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
On Mon, 14 Sep 2009, Matt White wrote: So what does the commercial imagery cost? I don't even know who supplies itor what the licensing is like In my mailbox today www.aerialimpressions.com.au We are conducting aerial photography in your area over the next 4 weeks Save $200 Now $119 Receive 10 proofs of your home or property for just $119 (incl GST) ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
On Tue, 22 Sep 2009, Liz wrote: In my mailbox today www.aerialimpressions.com.au We are conducting aerial photography in your area over the next 4 weeks Save $200 Now $119 Receive 10 proofs of your home or property for just $119 (incl GST) http://aerialimpressions.com.au/gallery/twnTN010.jpg looks quite usable for our purposes but of course its copyright :-( and here is the commercial cost New Aerial Survey System We now have a new mapping system allowing us to shoot full surveys of any area. Pricing for this service starts at $50 per Sq Km ( 20 Sq Km Min.) When we have a legal entity then we can start negotiating with companies like this for use of their photos ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
On Tue, 22 Sep 2009, Liz wrote: http://aerialimpressions.com.au/gallery/twnTN010.jpg looks quite usable for our purposes sorry, if you get to that image from the website, with the same name you get a reasonable size file not a thumbnail ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
Liz wrote: On Tue, 22 Sep 2009, Liz wrote: In my mailbox today www.aerialimpressions.com.au We are conducting aerial photography in your area over the next 4 weeks Save $200 Now $119 Receive 10 proofs of your home or property for just $119 (incl GST) http://aerialimpressions.com.au/gallery/twnTN010.jpg looks quite usable for our purposes but of course its copyright :-( At least one of their products is marked as copyright free... (Aerial Photography CDROM of Melbourne) ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/22 Liz ed...@billiau.net: On Tue, 22 Sep 2009, Liz wrote: http://aerialimpressions.com.au/gallery/twnTN010.jpg looks quite usable for our purposes sorry, if you get to that image from the website, with the same name you get a reasonable size file not a thumbnail http://www.aerialimpressions.com.au/gallery/twn010.jpg ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/22 Liz ed...@billiau.net: and here is the commercial cost New Aerial Survey System We now have a new mapping system allowing us to shoot full surveys of any area. Pricing for this service starts at $50 per Sq Km ( 20 Sq Km Min.) Tad more expensive that sat imagery, wonder what they charge for archive imagery. When we have a legal entity then we can start negotiating with companies like this for use of their photos Did you or anyone else have a chance to look over the association rules, if so was there anything I missed? or something that should have been in there? ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
Liz wrote: On Sat, 19 Sep 2009, Matt wrote and John Smith copied: Either way, the big issue in Australia is trying to get people invloved in the regional areas, as it's just not feasible for us city folk to leg it 400km on the weekend to map a town. 400km - do you think that's far? but points of interest get further apart so I can drive that far easily and map a place on the other end of the route Seriously I have several times done a more than 1000km round trip for the purpose of mapping, and enjoying Australia too. Not far, but given the first 80km is in traffic, it's time consuming :) I think my best is probably only 650km is a single trip - mostly driven by the need to refuel the beast more than anything else, well, that and the road I tend to map really have a top speed of about 60km given the surface and windy-ness ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
I received a reply about the cost to rent a plane, about 230GBP for one hour and the airport was close to the place they were photographying and it was mostly a PR stunt. Due to the sideways angle they are having difficulty rectifying images and that side of things is being worked on however companies doing this on a professional basis have a custom fit out of a plane with gyro stabalising mounts and super expensive medium format or bigger film sizes. I was pointed to this link, which I've already seen and forgot about, but it seems sat imagery is cheaper than trying to do it by plane: http://wiki.openstreetmap.org/wiki/Aerial_photography_funding_appeals#How_much_does_it_cost About 12-17$ per sq km, US$ I'm guessing, although AU$ is up to 87c again. If we could raise the funds needed the only question then is what do we want imagery of? ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
John Smith wrote: I received a reply about the cost to rent a plane, about 230GBP for one hour and the airport was close to the place they were photographying and it was mostly a PR stunt. Due to the sideways angle they are having difficulty rectifying images and that side of things is being worked on however companies doing this on a professional basis have a custom fit out of a plane with gyro stabalising mounts and super expensive medium format or bigger film sizes. I was pointed to this link, which I've already seen and forgot about, but it seems sat imagery is cheaper than trying to do it by plane: http://wiki.openstreetmap.org/wiki/Aerial_photography_funding_appeals#How_much_does_it_cost About 12-17$ per sq km, US$ I'm guessing, although AU$ is up to 87c again. If we could raise the funds needed the only question then is what do we want imagery of? That's for the two metre resolution - a plane would probably give better than 50cm resolution using a decent camera. Need to find some trainee pilots who need the flight time, and split the cost of the plane. Not sure how you'd rig the camera though. I'd vote for getting a selection of regional towns - population 5000, with a reasonable number of smallers towns located close by (well, close in AU terms - within say 100km. Vic examples would be Hamilton/Casterton/Portland area, maybe Naracoorte or Renmark in SA). I think the approach has to be to kick off with the larger town - we do initial tracing to lay down the core road grid and style, and work out a way of getting someone in that town to start tracing and naming (thus no GPSr entry cost for the local mappers), and then work out how to publicise the fact. I'd try and use the local papers to do so - a quick article about how OSM is paying for high res aerial, and now we need to make some decent maps would kick it off. The regional papers would publish that sort of thing no probs (although you might need to target the few remaining independents rather than the Rural/APN papers). There's also the Blokes Shed groups - retired blokes who tinker, who could probably benefit from the exercise walking around the town... although they could probably do most of it from memory. If the satellite is good enough and cheap enough, most of these town might only be 20 sq km, so buying the sat imagery is possibly more viable cost wise. Either way, the big issue in Australia is trying to get people invloved in the regional areas, as it's just not feasible for us city folk to leg it 400km on the weekend to map a town. (That said, I've discovered that jumping onto the V-Line train early morning with the bike, and getting off at an unmapped town is both viable and cheap - a lot cheaper than driving there. You can get through a small town in a day easily on a bike. Just make sure you know when the last train back home is...) Matt ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
John Smith wrote: 2009/9/14 b.schulz...@scu.edu.au: I'm happy to download a few gig of that imagery and post out DVDs to people. at 250m/pixel it's not worth bothering with. So what does the commercial imagery cost? I don't even know who supplies itor what the licensing is like ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/14 Matt White mattwh...@iinet.com.au: So what does the commercial imagery cost? I don't even know who supplies itor what the licensing is like Well having grown up in rural areas there is always people going round offering to take photos of farms, then of course you have major commercial operations that supply to the various governments for various purposes. I can't remember how much it costs to get a photo of your farm, but commercial hi-res sat imagery is $300k per sq km according to the OSM wiki. Another option might be to hire a plane + pilot to go take your own photos... Then of course there is hobbyists you could probably fly with for the cost their fuel bill... ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
First bit of snooping shows that Landsat imagery is now freely available at http://landsat.usgs.gov/ Haven't yet figured out where the data is or how to get the data / images out yet, or whether there is any Aussie data there at all. It says that the Landsat images are taken from 440 miles up, which is a lot more that I had thought. I presumed they were from about 160 miles or so. Having fresh data is usefull when you want to draw in a new railway line like the one from Robina to Varsity Lakes on the Gold Coast. All I have been able to see so far is that there are two tracks, it does go underground for something like 300 metres or so and it hugs the Pacific Hwy. I only use Potlatch so cant render railway lines (or cant figure out how to). There are Low Earth Orbiting weather satellites whizzing around at about 160 miles altitude, which is what I was referring to earlier, operating around 137 MHz, but the images are modulated onto an audio carrier, so in reality, it is very optimistic to expect to get much detail from them. To be continued... Graeme Wilson VK1RE Date: Sat, 12 Sep 2009 23:29:54 +1000 Subject: Re: [talk-au] Our own satellite imagery? From: deltafoxtrot...@gmail.com To: wandere...@live.com.au CC: talk-au@openstreetmap.org 2009/9/12 Graeme Wilson wandere...@live.com.au: Anyone interrested? I'm interested but I don't know how much help I could be or the legality of doing something like this. You would generally need several passes or more just to account for clouds obscuring the ground, before you even get to trying to turn low res into high res. I'm not sure how much use weather sats would be, since they are at higher orbits (36,000 km) than the ones usually taking ground imagery (425km). Another option might be to see if we can buy aerial photography images on the cheap or sponsored, even if they are well out of date there is a lot of towns that just haven't change much in the last 100 years in terms of roads at least. _ View photos of singles in your area Click Here http://clk.atdmt.com/NMN/go/150855801/direct/01/___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/13 Graeme Wilson wandere...@live.com.au: It says that the Landsat images are taken from 440 miles up, which is a lot more that I had thought. I presumed they were from about 160 miles or so. Weather doesn't need the same accuracy, plus they would orbit slower. Having fresh data is usefull when you want to draw in a new railway line like the one from Robina to Varsity Lakes on the Gold Coast. All I have been able to see so far is that there are two tracks, it does go underground for something like 300 metres or so and it hugs the Pacific Hwy. I only use Potlatch so cant render railway lines (or cant figure out how to). It's worth learning JOSM for the ability to zoom in on sat imagery. Who knows maybe potlatch can lock sat imagery zoom by now. There are Low Earth Orbiting weather satellites whizzing around at about 160 miles altitude, which is what I was referring to earlier, operating around 137 MHz, but the images are modulated onto an audio carrier, so in reality, it is very optimistic to expect to get much detail from them. There is also this site: http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS016roll=Eframe=22759 ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
On Sun, 13 Sep 2009, Graeme Wilson wrote: First bit of snooping shows that Landsat imagery is now freely available at http://landsat.usgs.gov/ That's a bleeding shame that the full archive has been available since last October, and we are still using stuff at least 8 years old for our area (pre- drought, its all that funny green colour) ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
There is data available for free from our own government but it is what they call medium resolution, that is 250 metres per pixel and it is free if you download it, and the file size is from 1.5 to 2.5 GB. (Yes, GB) or $150 per DVD, but at 250 m per pixel, I doubt it is usefull. We need better than that. To be continued... Graeme Wilson VK1RE From: ed...@billiau.net To: talk-au@openstreetmap.org Date: Mon, 14 Sep 2009 06:58:57 +1000 Subject: Re: [talk-au] Our own satellite imagery? On Sun, 13 Sep 2009, Graeme Wilson wrote: First bit of snooping shows that Landsat imagery is now freely available at http://landsat.usgs.gov/ That's a bleeding shame that the full archive has been available since last October, and we are still using stuff at least 8 years old for our area (pre- drought, its all that funny green colour) ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au _ Take a peek at other people's pay and perks Check out The Great Australian Pay Check http://clk.atdmt.com/NMN/go/157639755/direct/01/___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
I'm happy to download a few gig of that imagery and post out DVDs to people. What site has it? - Original Message - From: Graeme Wilson wandere...@live.com.au Date: Monday, September 14, 2009 8:38 am Subject: Re: [talk-au] Our own satellite imagery? To: ed...@billiau.net, talk-au OSM talk-au@openstreetmap.org There is data available for free from our own government but it is what they call medium resolution, that is 250 metres per pixel and it is free if you download it, and the file size is from 1.5 to 2.5 GB. (Yes, GB) or $150 per DVD, but at 250 m per pixel, I doubt it is usefull. We need better than that. To be continued... Graeme Wilson VK1RE From: ed...@billiau.net To: talk-au@openstreetmap.org Date: Mon, 14 Sep 2009 06:58:57 +1000 Subject: Re: [talk-au] Our own satellite imagery? On Sun, 13 Sep 2009, Graeme Wilson wrote: First bit of snooping shows that Landsat imagery is now freely available at http://landsat.usgs.gov/ That's a bleeding shame that the full archive has been available since last October, and we are still using stuff at least 8 years old for our area (pre- drought, its all that funny green colour) ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au _ Take a peek at other people's pay and perks Check out The Great Australian Pay Check http://clk.atdmt.com/NMN/go/157639755/direct/01/ ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/14 b.schulz...@scu.edu.au: There's always this idea too: http://hardware.slashdot.org/story/09/09/13/1712216/Students-Take-Pictures-From-Space-On-150-Budget?art_pos=7 A balloon based imagery project would be seriously cool. It would certainly be useful for getting imagery of small towns, university campuses etc. Remote control blimp would be more useful since you'd be able to control it, and keep it below clouds, if you go at or above the cloud level you need to do multiple passes to get round clouds obscuring the view. The other option would be some kind of tethered balloon. In any case none of these options would be very viable to mass capture suitable imagery we could trace from. I wonder if there is any UAV blimps with solar panels? ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/14 b.schulz...@scu.edu.au: I'm happy to download a few gig of that imagery and post out DVDs to people. at 250m/pixel it's not worth bothering with. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Our own satellite imagery?
2009/9/12 Graeme Wilson wandere...@live.com.au: Anyone interrested? I'm interested but I don't know how much help I could be or the legality of doing something like this. You would generally need several passes or more just to account for clouds obscuring the ground, before you even get to trying to turn low res into high res. I'm not sure how much use weather sats would be, since they are at higher orbits (36,000 km) than the ones usually taking ground imagery (425km). Another option might be to see if we can buy aerial photography images on the cheap or sponsored, even if they are well out of date there is a lot of towns that just haven't change much in the last 100 years in terms of roads at least. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
