/usr/ is in libvisp-io-dev 3.1.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/visp3/
/usr/include/x86_64-linux-gnu/visp3/io/
/usr/include/x86_64-linux-gnu/visp3/io/vpDiskGrabber.h
/usr/include/x86_64-linux-gnu/visp3/io/vpImageIo.h
/usr/include/x86_64-linux-gnu/visp3/io/vpKeyboard.h
/usr/include/x86_64-linux-gnu/visp3/io/vpParallelPort.h
/usr/include/x86_64-linux-gnu/visp3/io/vpParallelPortException.h
/usr/include/x86_64-linux-gnu/visp3/io/vpParseArgv.h
/usr/include/x86_64-linux-gnu/visp3/io/vpVideoReader.h
/usr/include/x86_64-linux-gnu/visp3/io/vpVideoWriter.h
/usr/include/x86_64-linux-gnu/visp3/visp_io.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/share/
/usr/share/doc/
/usr/share/doc/libvisp-io-dev/
/usr/share/doc/libvisp-io-dev/copyright
/usr/lib/x86_64-linux-gnu/libvisp_io.so
/usr/share/doc/libvisp-io-dev/changelog.Debian.gz