/usr/include/pcl-1.7/pcl/visualization/ is in libpcl-dev 1.7.2-14build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/pcl-1.7/pcl/visualization/area_picking_event.h
/usr/include/pcl-1.7/pcl/visualization/boost.h
/usr/include/pcl-1.7/pcl/visualization/cloud_viewer.h
/usr/include/pcl-1.7/pcl/visualization/common/
/usr/include/pcl-1.7/pcl/visualization/common/actor_map.h
/usr/include/pcl-1.7/pcl/visualization/common/common.h
/usr/include/pcl-1.7/pcl/visualization/common/float_image_utils.h
/usr/include/pcl-1.7/pcl/visualization/common/impl/
/usr/include/pcl-1.7/pcl/visualization/common/impl/common.hpp
/usr/include/pcl-1.7/pcl/visualization/common/impl/shapes.hpp
/usr/include/pcl-1.7/pcl/visualization/common/io.h
/usr/include/pcl-1.7/pcl/visualization/common/ren_win_interact_map.h
/usr/include/pcl-1.7/pcl/visualization/common/shapes.h
/usr/include/pcl-1.7/pcl/visualization/eigen.h
/usr/include/pcl-1.7/pcl/visualization/histogram_visualizer.h
/usr/include/pcl-1.7/pcl/visualization/image_viewer.h
/usr/include/pcl-1.7/pcl/visualization/impl/
/usr/include/pcl-1.7/pcl/visualization/impl/histogram_visualizer.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/image_viewer.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/pcl_plotter.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/pcl_visualizer.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/point_cloud_color_handlers.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/point_cloud_geometry_handlers.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/point_cloud_handlers.hpp
/usr/include/pcl-1.7/pcl/visualization/impl/registration_visualizer.hpp
/usr/include/pcl-1.7/pcl/visualization/interactor.h
/usr/include/pcl-1.7/pcl/visualization/interactor_style.h
/usr/include/pcl-1.7/pcl/visualization/keyboard_event.h
/usr/include/pcl-1.7/pcl/visualization/mouse_event.h
/usr/include/pcl-1.7/pcl/visualization/pcl_painter2D.h
/usr/include/pcl-1.7/pcl/visualization/pcl_plotter.h
/usr/include/pcl-1.7/pcl/visualization/pcl_visualizer.h
/usr/include/pcl-1.7/pcl/visualization/point_cloud_color_handlers.h
/usr/include/pcl-1.7/pcl/visualization/point_cloud_geometry_handlers.h
/usr/include/pcl-1.7/pcl/visualization/point_cloud_handlers.h
/usr/include/pcl-1.7/pcl/visualization/point_picking_event.h
/usr/include/pcl-1.7/pcl/visualization/range_image_visualizer.h
/usr/include/pcl-1.7/pcl/visualization/registration_visualizer.h
/usr/include/pcl-1.7/pcl/visualization/simple_buffer_visualizer.h
/usr/include/pcl-1.7/pcl/visualization/vtk/
/usr/include/pcl-1.7/pcl/visualization/vtk.h
/usr/include/pcl-1.7/pcl/visualization/vtk/pcl_context_item.h
/usr/include/pcl-1.7/pcl/visualization/vtk/pcl_image_canvas_source_2d.h
/usr/include/pcl-1.7/pcl/visualization/vtk/vtkRenderWindowInteractorFix.h
/usr/include/pcl-1.7/pcl/visualization/vtk/vtkVertexBufferObject.h
/usr/include/pcl-1.7/pcl/visualization/vtk/vtkVertexBufferObjectMapper.h
/usr/include/pcl-1.7/pcl/visualization/window.h