First of all, I would like to think PIX4D Mapper for one of the greatest software ever created. In my first post, I mentionned that some GCPs coudn’t match the indicated locations. There IS a big problem of accuray. Please,tell me something. Why can, in a same project, some GCP match locations after reoptmizing and some others simply cannot. I mean, after reoptimizing the project with 12 GCP, 10 perfectly matched the model and 2 others are vertically shifted.
Note that the images have the same coordinate system that the GCP.
WGS84/ UTM zone 30 N (egm86)