Read and write EXIF tags from Jpeg
We are desperately looking for open source libraries to read and write (compressed?) EXIF tags from a Jpeg file.
We 'simply' want to read the capture date of a digital photo and write it's location into the geo tags (lat/lon).
We already found http://drewnoakes.com/code/exif/ but did'nt succeed. And googling it mostly leads to Imagero and reading with no writing code.
Any hints are welcome.