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General / Relative accuracy with drone images withouth GCPs
« on: February 17, 2022, 10:16:23 PM »
Hi All!
Currently my job is to measure rooftops with a maximum error of 10 cms. I have a DJI phantom 4 Pro V2 drone and I flew a reference building to see if I can produce accurate measurements. I used Pix4D capture with 3D model mission with 45 meters height and around 2 cm GSD and 80% front and side overlap and I had around 270 pictures. After importing and going through the aligning process and point cloud, mesh, textures and ortho photos, I had around 2-3 meters error in the measurements compared to the reference. What can I do, what did I do wrong? If you need more details, please ask for it.
Thank you for your help in advance,
Adam
Currently my job is to measure rooftops with a maximum error of 10 cms. I have a DJI phantom 4 Pro V2 drone and I flew a reference building to see if I can produce accurate measurements. I used Pix4D capture with 3D model mission with 45 meters height and around 2 cm GSD and 80% front and side overlap and I had around 270 pictures. After importing and going through the aligning process and point cloud, mesh, textures and ortho photos, I had around 2-3 meters error in the measurements compared to the reference. What can I do, what did I do wrong? If you need more details, please ask for it.
Thank you for your help in advance,
Adam
