I would like to know the step by step to perform the photogrammetry process on several images by pix4Dmapper and obtain the .txt file.
Hi,
Do you mean the orthomosaic tif file? You can find our processing steps here: https://support.pix4d.com/hc/en-us/articles/115002472186-Processing-steps and some other links: https://support.pix4d.com/hc/en-us/articles/202559339-What-does-step-1-Initial-Processing-do, https://support.pix4d.com/hc/en-us/articles/360032118251-Video-tutorials#Pix4Dmapper