Reputation: 855
I encoded image with jPEG2000 standard, how to get size of image after compression.
identify inputimage.pgm
works but
identify inputimage.jpc
does not work. error is "identify: no decode delegate for this image format `J2K' @ error/constitute.c/ReadImage/501."
Upvotes: 1
Views: 435
Reputation: 10267
Error messages says identify
did not find necessary library to handle JPEG2000. You can check output of identify -list format
to confirm that.
Indeed, it seems that JPEG2000 support is not enable in last versions of Ubuntu. Debian fixed this issue a while ago. So I suggest:
Under Ubuntu, you can rebuild ImageMagick with JPEG2000 support following these steps:
apt-get source imagemagick
sudo apt-get build-dep imagemagick
sudo apt-get install libopenjp2-7-dev
dpkg-buildpackage -uc -us
sudo dpkg -i *deb
Upvotes: 1
Reputation: 208107
You can test which image formats your ImageMagick installation is able to read/write by running:
identify -list format
And further, which files ImageMagick is able to read/write by "delegating" out to a "helper program", by running:
identify -list delegate
If you are on Linux and missing JPEG2000, you will probably need to have installed the following before running ./configure
to configure ImageMagick:
On a Mac under macOS at least, that means you need to have done:
brew install openjpeg
brew install imagemagick --with-openjpeg # Use "reinstall" if already installed
Upvotes: 0
Reputation: 178
If ImageMagick does not the trick, you can try using exiftool:
exiftool -FileSize inputimage.jpc
Upvotes: 0