Basically is it possible to copy georeferenced information from one raster (original) to another one (Photoshoped), not the tfw but actually header?
I looked hard but can't find any precise answer.
Assuming you are working on a GeoTiff file, you can use
OSGeo4w Shell which comes with QGIS installation.
Let's say file names are:
OSGeo4w Shell and move to the directory (folder) you store the raster file
listgeo original.tif > original.gtf geotifcp -g original.gtf retouched.tif output.tif
Above, first line will copy geotag from
original.tif and save it as a
gtf file. Second line will paste
retouched.tif and return an output raster (
It is common we corrupt geotags while Photoshop retouching the image, and
OSGeo4W returns an error. Cleaning the retouched file beforehand may help.
listgeo original.tif > original.gtf gdal_translate -of GTiff -co PROFILE=BASELINE retouched.tif retouched_clean.tif geotifcp -g original.gtf retouched_clean.tif output.tif
You will find more detailed discussions in this site, but a basic outline (rundown) may be hard to find.