/usr/lib/x86_64-linux-gnu/libopenjp3d.so.7 is in libopenjp3d7 2.1.0-2.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libopenjp3d.so.2.1.0
/usr/lib/x86_64-linux-gnu/libopenjp3d.so.2.1.0