nix4dOpen 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 displayedWho are we? Pix4D is a market leader in photogrammetry software technology.. Our products enable you to ditize reality and measure from images taken from planes, drones, phones, or