How can i know the work process of odm_orthophoto

[westlife767]

hello,i am a student,i think odm is a very interesting and useful project,so i want to learn the word process of odm_orthophoto,so i decide to read code source to learn about this,so i want to know how many steps about this and how can i read it

[pierotofy]

Where can I find background information on the concepts of ODM?

Hey @Sebastian_Egli I found this (a bit dated) document which has a very, very brief overview: https://github.com/OpenDroneMap/OpenDroneMap/wiki/Process-Breakdown In short, the steps are: Images metadata extraction (GPS location, coordinate system) Structure from motion (from images to camera positions/orientations and sparse point cloud). We use OpenSfM for this. Multi view stereo (from camera + images to dense point clouds) Meshing (from points clouds to triangle meshes, we use most…

Or was your question specific to the workings of the odm_orthophoto program only?

[westlife767]

thank you,yes, i want to know the odm_orthophoto first, and next step I want to know others after the odd_orthophoto

[westlife767]

and how can I read the source code, and now I do not know how to deal with the ground control points, how to choose ground control points and how to deal with the GPS coordinate,because the picture of png format have one GPS coordinate, but I do not kown why the result of picture of Tiff format have GPS location for every pixel and how to conversion from png format to tiff format