/usr/include/ is in libgnomescan-dev 0.6.2-1.1ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gnome-scan-1.0/
/usr/include/gnome-scan-1.0/gnome-scan-init.h
/usr/include/gnome-scan-1.0/gnome-scan.h
/usr/include/gnome-scan-1.0/gnome-scan-backend.h
/usr/include/gnome-scan-1.0/gnome-scan-sink.h
/usr/include/gnome-scan-1.0/gnome-scan-utils.h
/usr/include/gnome-scan-1.0/gnome-scan-dialog.h
/usr/include/gnome-scan-1.0/gnome-scan-job.h
/usr/include/gnome-scan-1.0/gnome-scan-preview-area.h
/usr/include/gnome-scan-1.0/gnome-scan-acquisition-dialog.h
/usr/include/gnome-scan-1.0/gnome-scanner.h
/usr/include/gnome-scan-1.0/gnome-scan-param-specs.h
/usr/include/gnome-scan-1.0/gnome-scan-module.h
/usr/include/gnome-scan-1.0/gnome-scan-types.h
/usr/include/gnome-scan-1.0/gnome-scan-settings.h
/usr/include/gnome-scan-1.0/gnome-scan-module-manager.h
/usr/include/gnome-scan-1.0/gnome-scan-plugin.h
/usr/include/gnome-scan-1.0/gnome-scan-param-widget.h