Diskussion:WorldFileTool
Aus Geoinformation HSR
Version vom 17. April 2008, 20:28 Uhr von DTran (Diskussion | Beiträge)
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
- (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.zi
- KML with priority
- (?upload)
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.