gdegreef
Tourist
Reged: 03/20/06
Posts: 4
Loc: South Africa
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ComputaMaps has produced a 3d model of Downtown Vancouver, BC which we will be showcasing at GeoWeb 2006, http://www.geoweb.org July 24-28.
The model contains almost 5000 objects, including several landmark buildings (textured using the new GE 4 features), such as:
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The Science World building - a 155 foot tall geodesic dome!
One Wall Centre - voted the world's best new skyscraper in 2001
Morris Wosk Centre - 4 story glass atrium, the GeoWeb conference venue
Edited by gdegreef (07/21/06 05:50 AM)
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WileECoyote
Tourist
Reged: 01/16/06
Posts: 3
Loc: Vancouver, Canada
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Amazing! Thanks for sharing. The library looks great.
www.placemarkers.com
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TubbyBtch
Tourist
Reged: 07/15/06
Posts: 2
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Amazing job...may I ask, what tools did you use?
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Frank4
Master Blogger
Reged: 07/10/05
Posts: 1028
Loc: Cary, North Carolina, USA
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Kudos to the guys at Computamaps for this nice Vancouver collection of 3D models. You got written up at Google Earth Blog.
Read the story here.
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Frank Taylor - Author of Google Earth Blog (also available in Spanish)
All about Google Earth news, features, tips, technologies, and applications.
(If you have story ideas, please send me a private message.)
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jpwade
Builder
Reged: 03/12/06
Posts: 593
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yes excellent work without a doubt, the filesize is a major factor considering the amount of objects.
tools? automation, possibly such as an ESRI export to SU or kml soruced from a relational database holding polygon attributes (height, color, elevation etc)
my guess would be it is a geo-refferenced arcscan (scanned image, raster lines converted to polygons)
If you turn the model on/off you will notice a registration error of building footprint to GE's Aerial offset. Possibly due to GE SU .kmz export or some other projection error such as GE terrain elevations, geo-referencing error in conjunction with orthographic / oblique views
this model reminds me of promotional adds by ESRI such as those shown at the ArcGIS Explorer Showcase , big difference here being single color for the indidvidual building.
In ESRI's Los Angeles Model , building structure annexe's and roof top objects differ in color on many buildings
this textured model with representations to symbolize features and single user file_geodatabase's (acgis9.2 enhancements) will add new dimensions to the development of 3D Globe Documents(.3dd).
ESRI's ArcGlobe was released around 6 years ago and their new release of ArcGis Explorer will provide "spatial analaysis" along and .kml support.
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
Download Latest Version of Google Earth
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jeffryv
Master Guide
Reged: 07/16/05
Posts: 1390
Loc: Vancouver, BC Canada
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Hi All
Welcome to my home town 
So much for my small sketchup project I was working on of Vancouver, maybe I will do Surrey instead LOL
Well done !!
Cheers
Jeff
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Translate Text
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gscad2004
Tourist
Reged: 01/14/06
Posts: 42
Loc: guben germany
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Hallo gdegreef,
Verry cool and good collored Work !
Was sind das fuer Gebaeude in deiner Stadt?
What are for buildings in your city?
Gerd Guben Obelix
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Das Glas ist immer noch halb voll ! Habt viel Spass !!!
The glass is still half full ! Have a lot of Fun !!!
Edited by gscad2004 (07/23/06 02:37 AM)
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barnabu
Tourist
Reged: 05/11/06
Posts: 85
Loc: Nottingham, UK
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Excellent! Thanks for sharing this.
IMO this idea of using strong colours with spot texturing for landmark structures is the way forward for large scale GE models.
Hey Google, get these guys in to give your GE 3d buildings a facelift!
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CSISagent
First Post
Reged: 07/03/05
Posts: 1
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Those tents you ask about are Cirque du Soleil (sp?)
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jpwade
Builder
Reged: 03/12/06
Posts: 593
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example placemark for questions in this post: parcels under 1 acre in moorehead, Mn. (12,463 parcels / filesize 1.5meg)
datasource & credits: http://www.gis.co.clay.mn.us/
(edited 4-24, dropped db from model, parcel pgon extruded in meters based on shape file db acerage field)
To be presenting this in the future, you have posted the initial model in a good place for feedback and questions.
I am curious if you have tried exporting from a gis app. to kml without getting boundary offset errors.
I have noticed at 0 elev. or near 0 elevation boundary line offset errors to GE projections from esri exports decrease.
for example in the middle of the gulf of mexico, i can measure from a lat/lon pt to a oil lease boundary (esri pt. & pgon export to kml) and end up will little if any error within GE
In GE at other global locations errors increase in some instances dramatically.
any idea why ?
note boundary errors in the attached placemark views N, S, E, W.
within ESRI the parcel shape file along with aerial(mrsid), fit like the edges of a newly pressed book. whereas in GE bldg structures of the GE aerial do not fall within the parcel boundaries of the ESRI export.
projections: UTM, WGS, PLSS all the same within ESRI, like thread through the eye of a needle.
any idea why within GE the offset occurs?
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
Download Latest Version of Google Earth
Edited by jpwade (07/24/06 03:32 PM)
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jpwade
Builder
Reged: 03/12/06
Posts: 593
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Hello gdegreef,
When time permits please review the attachment to this post.
It is the same parcel map as my previous post with the exception that the
parcel pgons were shifted N .18 prior to export from ESRI.
In the views N, S, E, W you will note the bldg structures of the GE aerial now fall within the parcel boundaries of the ESRI export.
toggle the model off and note the fence lines in the GE aerial
toggle the model back on and note parcel lines coencide with the GE aerial.
still curious why this occurs ...any ideas?
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
Download Latest Version of Google Earth
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jpwade
Builder
Reged: 03/12/06
Posts: 593
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Hello barnabu,
try this:
open model in GEv4
right click the placemark > select properties >select style,Colors tab >select share style button > select OK at the bottom of the Style,Color window and repeat the process..
on the 2nd run, when the Style,Color options window opens change to the following.
for line options
color box=white
width =.3
opacity =20%
for the area options
color box = white
pulldown box = filled and outlined
opacity =80%
random colors box = checked
click ok at bottom of window,
if for some reason the changes do not take , run the process again......
color selection box for area fills: (building colors)
white = random all colors
green = random green hues dominate
brown = random brown hues dominate
red = random red hues dominate
etc .....
**********
perhaps in the future GE will provide this process as an option for the buildings layer so that we will have custom viewing preferences as an option.
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
Download Latest Version of Google Earth
Edited by jpwade (07/24/06 04:25 PM)
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Frank4
Master Blogger
Reged: 07/10/05
Posts: 1028
Loc: Cary, North Carolina, USA
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Joey,
If I understand what your questions are about correctly, I think what you are seeing is a documented problem with many images in the Google Earth database. Google gets the images from a variety of providers and some of the data is older than others. The data is not always properly converted/projected to the proper coordinate system and I suspect some of the providers just "eyeball" the placement. I've found numerous cases where the photos are off by many feet/meters in different directions. In some cases, because it is a projection problem, the error is different from one corner of the image to the other.
Frank
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Frank Taylor - Author of Google Earth Blog (also available in Spanish)
All about Google Earth news, features, tips, technologies, and applications.
(If you have story ideas, please send me a private message.)
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jpwade
Builder
Reged: 03/12/06
Posts: 593
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Frank, your input very much appreciated
was not aware of aerial projection prolems, and i can understand the provider/eyeball comment since i have seen it first hand though not for the GE world. I guess this is somewhat necessary and expected when utilizing an array of aerial resolutions.
your post gives me a much better understanding as to why:
* in the gulf of mexico, no notable error (since there are no ground features to reference) *grin*
* why image overlays positioned with raster extents from esri do not overlay with GE terrain, though those extents are necessary for alignment of pgons & pts exported to SU or GE from ESRI.
(if i use raster extents for terrain overlays i end up having to stretch/reposition/rotate the overlay to coencide with the GE aerial, then this forces me to do the same for the model .... and so on .... and so on ..)
i am thinking my best bet would be to keep the raster extents from gis instead of doing the force fit thing, which i so much oppose, geesh i can be such a hypocrite, ha!
thanks again for giving an understanding...
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
Download Latest Version of Google Earth
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TommyAfrika
Master Cartographer
Reged: 06/01/05
Posts: 1905
Loc: Error 404. Please try again.
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OUTSTANDING !
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