That's nice-- it's the first one I've seen to focus on visualization of point clouds specifically.
Best, Steve On Sun, Dec 15, 2013 at 3:10 PM, Frank Henze <[email protected]> wrote: > I dont know, at which point the downsampling should take place. > An interesting solution for webbased visualization could be XB Point > Stream: > http://zenit.senecac.on.ca/wiki/index.php/XB_PointStream > > Frank > > Am 15.12.2013 00:45, schrieb Rémi Cura: > >> I guess everybody has reached the same conclusion : >> using pointcloud is is possible to manage 100's of billions of points >> and retrieve quickly those of interest. >> >> Now most of the usage requiere severe downsampling, which isn't a part >> of anything yet but may come (I'm working on adding this to pointcloud). >> . >> >> Cheers, >> >> Rémi-C >> >> >> 2013/12/12 Basques, Bob (CI-StPaul) <[email protected] >> <mailto:[email protected]>> >> >> >> Frank, >> >> I don't know about a group, or for that matter centering it on just >> PostGIS, but I see 3D as the next big Mapping product line that >> people are going to be looking for. PostGIS is a piece in a bigger >> puzzle. I've been researching different methods for storing and >> segmenting the point cloud data on the server side for a while now >> and PostGIS has percolated up to near the top of the list. >> >> There is a big piece related in how to generalize data for 3D >> scaling in the browser, that's the biggest shortcoming I've become >> aware of in order to make something run nicely in the browser, I've >> also of late been forcing myself to think mobile, which has it's own >> set of criteria as far as the browser goes. >> >> I would likely join the list of something call PostGIS 3d, but I >> don't know that there is enough interest for a whole community >> (yet), maybe it's better to stay ahead of the curve though. >> >> >> Bobb >> >> >> >> -----Original Message----- >> From: [email protected] >> <mailto:[email protected]> >> [mailto:[email protected] >> <mailto:[email protected]>] On Behalf Of Frank >> Henze >> Sent: Thursday, December 12, 2013 1:17 PM >> To: PostGIS Users Discussion >> Subject: Re: [postgis-users] Old question resurfacing >> >> Hi all, >> >> briefly a few details to http://www2.htw-dresden.de/~s68071/3DWebGIS/ >> : >> >> - Projektauswahl: Baalbek and Palatin are static X3D models (no >> PostGIS) >> - Projektauswahl: W3DS is dynamically generated from a PostGIS 2.0 >> DB >> via a "GetScene"-request by Geoserver >> >> I think Baalbek is too large (too many triangles) and therefore >> possibly leads to crash. Palatin and W3DS should work. >> >> The 3D window is a standard WebGL window based on X3DOM. So it >> should run right stable. >> >> Once again my question: >> Is there an interest in a PostGIS 3D group? >> >> Frank >> >> Am 12.12.2013 16:55, schrieb Basques, Bob (CI-StPaul): >> > Frank, >> > >> > Very nice. It froze up for me pretty quickly, I tried both FF >> and Chrome. Still looked good while it ran. >> > >> > This stability aspect is a big piece of being able to make >> something that folks will want to use. Data segregation will be a >> big piece moving forward I think. >> > >> > Bobb >> > >> > >> > >> > -----Original Message----- >> > From: [email protected] >> <mailto:[email protected]> >> > [mailto:[email protected] >> <mailto:[email protected]>] On Behalf Of Frank >> > Henze >> > Sent: Thursday, December 12, 2013 6:04 AM >> > To: PostGIS Users Discussion >> > Subject: Re: [postgis-users] Old question resurfacing >> > >> > Hi Bobb, >> > hi all, >> > >> > https://hub.sharedgeo.org/apps/x3d/ looks great! >> > >> > We have similar requirements for a 3d WebGIS. >> > A first prototype you can find at: >> > >> > http://www2.htw-dresden.de/~s68071/3DWebGIS/ >> > >> > For "Projektauswahl:" select "W3DS" >> > >> > and then select "Historische Gebäude" (Historical Buildings) >> > >> > If there is nothing to see, then press on the left side "Alles >> anzeigen" >> > >> > We use the community buildt Geoserver incl. Web 3D service + >> X3DOM + JS. >> > >> > Some of our problems: >> > >> > How to import 3D geometries into PostGIS? >> > Which formats and interfaces (CAD, X3D)? >> > Point clouds in PostGIS (also import of). >> > >> > Is there a 3D PostGIS interest-group? >> > If not, should one established? >> > >> > Frank >> > >> > Am 11.12.2013 17:44, schrieb Basques, Bob (CI-StPaul): >> >> All, >> >> >> >> Nothing that far along. Did a couple of proofs of concept so far, >> >> I've done a couple of presentations on the Visualizer approach. >> We >> >> tried a couple of different things, x3Dom, allover'js >> >> >> >> You can see some of them here ( some of the pages take a while to >> >> load the data in the background, be patient): >> >> >> >> https://hub.sharedgeo.org/apps/x3d/ (these will generally need a >> >> webGL enabled browser) >> >> >> >> These are purely intended as a test of just how much data could >> >> easily be squished into the browser before if blows, so you >> might experience >> >> some failures. Ideally the data coming into these would be >> segmented >> >> via a SQL call to PostGIS Pointcloud sources. >> >> >> >> The last two in the list are using some point clouds cut from our >> >> recent data collect at 8pt per sq meter for the City (6 billion >> >> points in all), these are using about 300k points each for >> example. >> >> >> >> Bobb >> >> >> >> *From:*[email protected] >> <mailto:[email protected]> >> >> [mailto:[email protected] >> <mailto:[email protected]>] *On Behalf Of *Rémi >> >> >> Cura >> >> *Sent:* Wednesday, December 11, 2013 10:08 AM >> >> *To:* PostGIS Users Discussion >> >> *Subject:* Re: [postgis-users] Old question resurfacing >> >> >> >> I would be very interested to know any attempt to visualize 3D >> point >> >> cloud from data base ! >> >> >> >> We did the same but our solution is far from perfect. >> >> >> >> Bob, is you rporject public/open source, have you any paper/doc >> about it ? >> >> >> >> Cheers, >> >> >> >> Rémi-C >> >> >> >> 2013/12/11 Basques, Bob (CI-StPaul) <[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> >> <mailto:[email protected]>>> >> >> >> >> Hmm, >> >> >> >> I'm working with the Minneapolis International Airport (MSP) on a >> >> project, any chance that data is open/accessible enough to play >> with? >> >> This could tie directly into a project I'm already working on. >> >> >> >> Thanks >> >> >> >> Bobb >> >> >> >> *From:*[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> <mailto:[email protected]>> >> >> [mailto:[email protected] >> >> <mailto:[email protected]> >> >> <mailto:[email protected] >> <mailto:[email protected]>>] *On Behalf Of *Gerry >> >> Creager - NOAA Affiliate >> >> *Sent:* Tuesday, December 10, 2013 2:14 PM >> >> >> >> >> >> *To:* PostGIS Users Discussion >> >> *Subject:* Re: [postgis-users] Old question resurfacing >> >> >> >> Bob, all: >> >> >> >> I agree. I'll have to spend some time with pointcloud but it DOES >> >> look very promising. >> >> >> >> Another application? Lidar. Pointed at the sky, not at the >> ground (we >> >> use 'em to determine cloud layers [ceiling] and sky cover at >> airports >> >> for aviation data...). >> >> >> >> Thanks, all! >> >> >> >> gerry >> >> >> >> On Tue, Dec 10, 2013 at 1:49 PM, Basques, Bob (CI-StPaul) >> >> <[email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> >> <mailto:[email protected]>>> wrote: >> >> >> >> Gerry, >> >> >> >> Remi's idea about using a point cloud may be spot on for your use. >> >> It allows you to set a point cloud down to a revolution if need >> be, >> >> which seems like what you are looking for.. If the data becomes >> too >> >> massive for insertion into DB at real-time speeds, then you could >> >> also separate this revolution into separate DB's as well, you >> could >> >> separate a whole number of ways, by elevation, or quadrant, or . >> . . >> >> >> >> I'm very interested in visualization possibilities with something >> >> like this being available in a database. We're doing some >> similar db >> >> 3d visualization stuff on some rather dense point clouds. Your >> data >> >> once available could use the same visualizer. >> >> >> >> Bobb >> >> >> >> *From:*[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> <mailto:[email protected]>> >> >> [mailto:[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> >> <mailto:[email protected]>>] *On Behalf Of *Gerry >> >> Creager - NOAA Affiliate >> >> *Sent:* Tuesday, December 10, 2013 1:41 PM >> >> *To:* PostGIS Users Discussion >> >> *Subject:* Re: [postgis-users] Old question resurfacing >> >> >> >> Bob >> >> >> >> At least preliminarily, I can post-process, so speed of db adds >> isn't >> >> too troubling. Maintaining accurate representation of the >> bin-volume >> >> data is, however, important. >> >> >> >> Typical rotation is 1-3 RPM, and a complete volume scan takes >> ~11 min >> >> in clear air (where you best see biologicals if so inclined) or ~5 >> >> min in one of the storm data collection modes. These are for >> common >> >> WSR88D, stationary radars. SMARTR's and others we have here that >> are >> >> mobile present a whole host of other options/data eval and speed >> problems. >> >> >> >> Current radar data are nominally considered to have a horizontal >> >> resolution of ~250 m, ignoring distortion or keyholing due to >> >> range.Typically 16 elevations are scanned, once or or twice in >> storm >> >> mode and a few less elevations in clear air mode. >> >> >> >> Now, the interesting thing that's on the horizon is Phased Array >> Radar. >> >> When that happens, more data, more resolution, and faster updates. >> >> >> >> gerry >> >> >> >> On Tue, Dec 10, 2013 at 11:05 AM, Basques, Bob (CI-StPaul) >> >> <[email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> >> <mailto:[email protected]>>> wrote: >> >> >> >> Gerry, >> >> >> >> Seems like the biggest hangup would be in adding the data to the >> DB >> >> fast enough. How many points, per revolution, and what is the >> >> frequency of a revolution (stationary Radar, correct, although as >> I >> >> think about it, it could be mobile if needed, just need to add >> in the >> >> radar location to each record)? >> >> >> >> Bobb >> >> >> >> *From:*[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> <mailto:[email protected]>> >> >> [mailto:[email protected] >> <mailto:[email protected]> >> >> <mailto:[email protected] >> >> <mailto:[email protected]>>] *On Behalf Of *Gerry >> >> Creager - NOAA Affiliate >> >> *Sent:* Tuesday, December 10, 2013 10:52 AM >> >> *To:* PostGIS Users Discussion >> >> *Subject:* [postgis-users] Old question resurfacing >> >> >> >> I asked this years ago, and I think Paul was less than pleased >> with >> >> me (:-), but: >> >> >> >> Has anyone, in the ensuing years looked at encoding radar data >> into a >> >> postGIS database? We've a little idea that might benefit one >> project, >> >> and getting the radar data into a good geospatial format would be >> >> beneficial.The data, of coure, would start out as >> radial-distance and >> >> intensity from the radar site, although we could preprocess it >> by gridding. >> >> >> >> Thanks, Gerry >> >> >> >> -- >> >> >> >> Gerry Creager >> >> >> >> NSSL/CIMMS >> >> >> >> 405.325.6371 <tel:405.325.6371> >> >> >> >> ++++++++++++++++++++++ >> >> >> >> "Big whorls have little whorls, >> >> >> >> That feed on their velocity; >> >> >> >> And little whorls have lesser whorls, >> >> >> >> And so on to viscosity." >> >> >> >> Lewis Fry Richardson (1881-1953) >> >> >> >> >> >> _______________________________________________ >> >> postgis-users mailing list >> >> [email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> >> <mailto:[email protected]>> >> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> >> >> >> >> >> -- >> >> >> >> Gerry Creager >> >> >> >> NSSL/CIMMS >> >> >> >> 405.325.6371 <tel:405.325.6371> >> >> >> >> ++++++++++++++++++++++ >> >> >> >> "Big whorls have little whorls, >> >> >> >> That feed on their velocity; >> >> >> >> And little whorls have lesser whorls, >> >> >> >> And so on to viscosity." >> >> >> >> Lewis Fry Richardson (1881-1953) >> >> >> >> >> >> _______________________________________________ >> >> postgis-users mailing list >> >> [email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> >> <mailto:[email protected]>> >> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> >> >> >> >> >> -- >> >> >> >> Gerry Creager >> >> >> >> NSSL/CIMMS >> >> >> >> 405.325.6371 >> >> >> >> ++++++++++++++++++++++ >> >> >> >> "Big whorls have little whorls, >> >> >> >> That feed on their velocity; >> >> >> >> And little whorls have lesser whorls, >> >> >> >> And so on to viscosity." >> >> >> >> Lewis Fry Richardson (1881-1953) >> >> >> >> >> >> _______________________________________________ >> >> postgis-users mailing list >> >> [email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> >> <mailto:[email protected]>> >> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> >> >> >> >> >> _______________________________________________ >> >> postgis-users mailing list >> >> [email protected] <mailto:postgis-users@lists. >> osgeo.org> >> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> > _______________________________________________ >> > postgis-users mailing list >> > [email protected] <mailto:postgis-users@lists. >> osgeo.org> >> > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> > >> > >> > _______________________________________________ >> > postgis-users mailing list >> > [email protected] <mailto:postgis-users@lists. >> osgeo.org> >> > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> > >> _______________________________________________ >> postgis-users mailing list >> [email protected] <mailto:[email protected]> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> _______________________________________________ >> postgis-users mailing list >> [email protected] <mailto:[email protected]> >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> >> >> >> _______________________________________________ >> postgis-users mailing list >> [email protected] >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> >> _______________________________________________ > postgis-users mailing list > [email protected] > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >
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