/usr/share/octave/packages/image-2.6.1/@strel/ is in octave-image 2.6.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/image-2.6.1/@strel/display.m
/usr/share/octave/packages/image-2.6.1/@strel/getheight.m
/usr/share/octave/packages/image-2.6.1/@strel/getneighbors.m
/usr/share/octave/packages/image-2.6.1/@strel/getnhood.m
/usr/share/octave/packages/image-2.6.1/@strel/getsequence.m
/usr/share/octave/packages/image-2.6.1/@strel/isflat.m
/usr/share/octave/packages/image-2.6.1/@strel/isscalar.m
/usr/share/octave/packages/image-2.6.1/@strel/numel.m
/usr/share/octave/packages/image-2.6.1/@strel/reflect.m
/usr/share/octave/packages/image-2.6.1/@strel/size.m
/usr/share/octave/packages/image-2.6.1/@strel/strel.m
/usr/share/octave/packages/image-2.6.1/@strel/subsref.m
/usr/share/octave/packages/image-2.6.1/@strel/translate.m