Diskussion:WorldFileTool: Unterschied zwischen den Versionen
Aus Geoinformation HSR
Stefan (Diskussion | Beiträge) (→==) |
Stefan (Diskussion | Beiträge) |
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## add metadata in GUI: floor (-99..99) and priority (0=nil=>unknown,1..100), map type (<background>1<background>) change title. | ## add metadata in GUI: floor (-99..99) and priority (0=nil=>unknown,1..100), map type (<background>1<background>) change title. | ||
# using '''WorldFileTool''' do either... | # using '''WorldFileTool''' do either... | ||
| − | ## "Save KML" again | + | ## "Save KML" again (note: rotate image to north if needed, see below) |
## (optional) Export world file | ## (optional) Export world file | ||
## (optional) Generate 'background map' (includes KML and image) (internet access required). | ## (optional) Generate 'background map' (includes KML and image) (internet access required). | ||
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** (?upload) | ** (?upload) | ||
| − | Input with "unwanted" rotation parameter; image needs to be rotated, so that <rotation>-49.84368795876157</rotation> can be left out (= <rotation>0</rotation>): | + | Input with "unwanted" rotation parameter; image needs to be rotated to 'north', so that <rotation>-49.84368795876157</rotation> can be left out (= <rotation>0</rotation>): |
<?xml version="1.0" encoding="UTF-8"?> | <?xml version="1.0" encoding="UTF-8"?> | ||
<kml xmlns="http://earth.google.com/kml/2.2"> | <kml xmlns="http://earth.google.com/kml/2.2"> | ||
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</GroundOverlay> | </GroundOverlay> | ||
</kml> | </kml> | ||
| − | |||
| − | |||
== Methoden == | == Methoden == | ||
Version vom 18. April 2008, 02:40 Uhr
Workflow
- Get image to be referenced about a region on earth; e.g. a floor plan from a building ('building map').
- Start Google Earth, create "New overlay..." and georeference image.
- In Google Earth export overlay as KML (not KMZ) "Save As...".
- Start WorldFileTool
- Choose "Open KML..." (which includes already overlay title, image name, bbox)
- (optional) or 1. open image file (e.g. jpg), take worldfile (e.g .jpw)
- add metadata in GUI: floor (-99..99) and priority (0=nil=>unknown,1..100), map type (<background>1<background>) change title.
- using WorldFileTool do either...
- "Save KML" again (note: rotate image to north if needed, see below)
- (optional) Export world file
- (optional) Generate 'background map' (includes KML and image) (internet access required).
- Use georeferenced image in your GIS viewer (e.g. IndoorWPS), map server or GIS.
There exist alternatives to georeference an image: See GISpunkt Wiki (german) and freegeographytools.com.
Specifications
Floor: Stock. ACHTUNG:
- Erdgeschoss => first floor (en_GB: ground floor)
- 1. Stock => 2nd floor (US)
KML:
- Examples to test load/import (KML without metadata, image):
- http:files/amklusbach.zip
- Building map example to test export (KML, image):
- http:files/gebaeude.zip
- Background map example to test Google Maps export (KML, image):
- http:files/background.zip
- KML with priority
- (?upload)
Input with "unwanted" rotation parameter; image needs to be rotated to 'north', so that <rotation>-49.84368795876157</rotation> can be left out (= <rotation>0</rotation>):
<?xml version="1.0" encoding="UTF-8"?> <kml xmlns="http://earth.google.com/kml/2.2"> <GroundOverlay> <name>HSR-Gebäude 6 1. Stock</name> <Icon> <href>G6-2.png</href> <viewBoundScale>0.75</viewBoundScale> </Icon> <LatLonBox> <north>47.22384390486059</north> <south>47.22345122640866</south> <east>8.816304349533887</east> <west>8.815489285344636</west> <rotation>-49.84368795876157</rotation> </LatLonBox> </GroundOverlay> </kml>
Methoden
/* Assumes a world file of a north up image, unprojected and in
WGS 84, defined with following affine transform parameters
*/
Point getlat2lon2(Image img, File worldfile)
etc.
