pik4dOpen PIX4Dmatic.; Click File on the menu bar.; Click Open...; On the pop-up Open Project, specify the location of the root.p4m file and click Open. (Optional) If images are not displayedPix4D is a Swiss software company that specializes in terrestrial and drone photogrammetry mapping software. It was founded in 2011 as a spinoff from the École Polytechnique Fédérale