This tool computes (dis)similarity between two or more PNG images using an algorithm approximating human vision. Comparison is done using a variant of the SSIM algorithm at multiple weighed resolutions. The value returned is 1/SSIM-1, where 0 means identical image, and >0 (unbounded) is amount of difference.
Values are not directly comparable with other tools, but DSSIM is generally more accurate (according to TID2013 test suite).
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap can be installed on Fedora from the command line:
sudo dnf install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
To install DSSIM, simply use the following command:
sudo snap install dssim
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.
