"strings -10 [imagefile]" may lead to something. Linux.

Not sure if this helps:

https://superuser.com/questions/275502/how-to-get-information-about-an-image-picture-from-the-linux-command-line

Not sure if this helps.

https://superuser.com/questions/275502/how-to-get-information-about-an-image-picture-from-the-linux-command-line