问题
I have approx 1000 PNG photographs which I am told have GPS information stored within them. I have tried numerous web based / downloadable programs to try and extract the EXIF information so I can get the GPS info.
I had some success with EXIF tool but there is no GPS info within:
Is there some other extraction method that I should be trying or is there no GPS info in the photograph?
来源：https://stackoverflow.com/questions/19492969/how-can-i-extract-gps-exif-info-from-a-png