RMagick can also be used to get an image size (and to change images in
many
ways.
Use,e.g.,
cheetah = Magick::Image.ping(“Cheetah.jpg”) »
[Cheetah.jpg JPEG 1024x768 DirectClass 8-bit 101684b]
p cheetah[0].rows » 768
p cheetah[0].columns » 1024
see :
_RMagick 1.15.0: class Image (class and instance methods, part 1)
(RMagick 1.15.0: class Image (class and instance methods, part 1))
Best regards,
Axel