I did a job to get a mosaic of a bridge over the sea. they are 2.4 km, using a corridor, with a lateral overlap of 75 and a long overlap of 80, with a resolution of 3 cm / px.
But when I process it in Pix4d, in the section over the sea, most of the cameras come out uncalibrated, and full of red crosses.
Which is the best metod in the initial procesing to do it? or what is the best method to calibrate these cameras?
PD: sorry about my english.