oernsen Posted March 3, 2016 Report Share Posted March 3, 2016 (edited) Hej all, I want to combine two georeferenced rasterfiles. One rasterfile should be in background, the ohter smaller image should lay over the background image. In ArcGIS I've tried combine, composite, mosaic and other tools without success. When I used this methods I get only a one channel image. I want to combine to one image (e.g. geotiff) that have two channels that each present one of the input images, so that I can assign color ramp to overlap region like the linked screeshot below. I know I could export the map, but I need the combined image in same dimensions and projection like inputs for further processing with other software. I also tried other tools in qgis, saga, grass and matlab but also without desired result. https://www.dropbox.com/s/hfq65ok07iypihz/overlay.jpg?dl=0 Thanks in advance! Oernsen Edited March 3, 2016 by oernsen Quote Link to comment Share on other sites More sharing options...
Lurker Posted March 4, 2016 Report Share Posted March 4, 2016 so by combine and result in two channel (band) , you want to stacking those raster right? mosaic always result in one files and one channel, in case your input file is one channel/band is it correct??? Quote Link to comment Share on other sites More sharing options...
Capricorn Posted March 4, 2016 Report Share Posted March 4, 2016 (edited) What about Raster Processing -> Composite Bands in ArcGIS? This way you get multi-band GeoTIFF from individual files. Or you can use Global Mapper to export multi-band image. Edited March 4, 2016 by Capricorn Quote Link to comment Share on other sites More sharing options...
oernsen Posted March 4, 2016 Author Report Share Posted March 4, 2016 @Lurker: Yes, I want to stack the rasters, both images have one band. @Capricorn: I've tried Composite Bands, and I get a two channel image, but I'm not able to asssign colorramps for both bands separately. When I assign colorramp to overlaying band, the other band will not displayed (see attached image) https://www.dropbox.com/s/i8m3ery0zsd3zmo/composite_Arc.JPG?dl=0 Quote Link to comment Share on other sites More sharing options...
Capricorn Posted March 4, 2016 Report Share Posted March 4, 2016 @oemsen: It looks like white pixels of foreground image cover the background image? Quote Link to comment Share on other sites More sharing options...
oernsen Posted March 4, 2016 Author Report Share Posted March 4, 2016 I don't know. I can't figure that out. When I use transparency only the background image does not appear. It seems that is not possible to display both bands?! Quote Link to comment Share on other sites More sharing options...
Lurker Posted March 4, 2016 Report Share Posted March 4, 2016 https://blogs.esri.com/esri/arcgis/2014/04/08/stacking-layers-of-imagery-in-arcgis/ Quote Link to comment Share on other sites More sharing options...
oernsen Posted March 4, 2016 Author Report Share Posted March 4, 2016 Thanks for the link, but it is only another way to composite bands with same results as with the toolbox Quote Link to comment Share on other sites More sharing options...
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