Does Pix4D Matic have automatic target (GCP) recognition (Pix4D Engine)?
yes, see here: https://support.pix4d.com/hc/en-us/articles/4402423894545-Automatic-target-detection-AutoGCP-algorithm
in addition to this fully automatic workflow (that you can control in PIX4Dmatic by editing and controlling the results), we have “auto-mark”, which helps to propagate your marks to more images.