Fail to reconstruct surface and produce True Ortho

Question

I flew an area with a DJI Matrice 4e, and I am not trying to use Drone2Map to create a True Ortho of the area. My project has 2528 photos that I am trying to stitch together. It runs through the process and says it is 100% done, but never creates the true ortho. When I am looking at the log I do see some things that says its fails, but I am not sure how to fix them.

I have successfully run a project with around 1900 photo on my machine before, and I do meet the recommend specs for the machine. I have tried doing multiple settings, and removed any uncalibrated images.

Any help would be great!

I have attached the log

ProjectLog.log

MarkBarker1 · Answer

Hi @JuliaLenhardt , we did have a file path length issue that could occur during surface reconstruction in 2025.2 that should have been resolved with 2026.1. Have you had a chance to test the latest release to see if the problem is reproducible?

Regards,

Mark

JuliaLenhardt · Answer

Hi @MarkBarker1! I'm having the same issue as listed here, but digging into the ProjectLog I see it fails when attempting to write to the project folder, which of course doesn't make sense since the folder is editable. Could it be an issue with the number of characters in the path? I made it as short as possible. See the attached ProjectLog and the error about writing to files in "C:\DroneProducts\Testflight2\Project\Process\SurfaceRecon\Images	mp_0"

Thanks!

Julia

ProjectLog.log

JaronJensen7 · Answer

Hi @MarkBarker1 ,

So I do get result folders but they are usually empty. One thing it does produce is a csv file with the image metadata. After looking at that it did appear that I had images with different focal lengths. I removed the images with different focal lengths and it is producing the true ortho.

So my best guess is that I bumped the zoom trigger and it changed a setting that caused it to fail. I will have to fun it on a smaller area and then stitch them together.

Thanks,

Jaron