Cloud Measurement Incorrect Area and Distance

Hello,
Thanks for your work, Pix4D cloud is simple and full of potential!

I have one precision issue’s with a result. We compared the pix4Dcloud result with a traditionnal geometer result and what can we say is :

  • The X,Y precision is good
  • The elevetion is not good (at all). half meter imprecision

Does it cause due to pix4D dataset or maybe the acquisition (I will do it again with GCPS)?