/usr/ is in libvisp-detection-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/detection/
/usr/include/x86_64-linux-gnu/visp3/detection/vpDetectorAprilTag.h
/usr/include/x86_64-linux-gnu/visp3/detection/vpDetectorBase.h
/usr/include/x86_64-linux-gnu/visp3/detection/vpDetectorDataMatrixCode.h
/usr/include/x86_64-linux-gnu/visp3/detection/vpDetectorFace.h
/usr/include/x86_64-linux-gnu/visp3/detection/vpDetectorQRCode.h
/usr/include/x86_64-linux-gnu/visp3/visp_detection.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/share/
/usr/share/doc/
/usr/share/doc/libvisp-detection-dev/
/usr/share/doc/libvisp-detection-dev/copyright
/usr/lib/x86_64-linux-gnu/libvisp_detection.so
/usr/share/doc/libvisp-detection-dev/changelog.Debian.gz