Thanks for sending the entire quality report and log file through a support request. Here are a few points that affected the outputs and that I would consider to improve the project:
In the quality report, it seems as if there was wind while you acquired the images, the overlap was not constant higher in one direction than the other:
This on the other hand had an impact on the overlap in the project, which can influence the reconstruction (yellow and red is insufficient overlap):
For your next missions, if you notice a strong wind, I would increase the overlap, so that even when the drone flies in the direction of the wind the overlap is sufficient.
The log file shows this error:
“[Error]: Error e0094: It was not possible to initialize OpenGL. Verify that you have the latest drivers for your graphics card and that you are not using the software from a remote desktop. Detected QGLFormat::OpenGLVersionFlags: 2048”
I would try to update my GPU drivers and read this article: https://support.pix4d.com/hc/en-us/articles/202561189
- Step 2 not processed
In the log file, it seems like step 2 was not processed. When that is the case, the DSM and Orthomosaic are based on the outputs from step 1, which is a sparse point cloud. This could explain the buildings that have “blobs” on them. The results should be more accurate if you process step 2. Point Cloud and Mesh.
If you process step 2, you will have a densified point cloud, which will be more accurate and that can also be edited to remove noise, see: https://support.pix4d.com/hc/en-us/articles/202560499
- Add Manual Tie Points (MTPs)
There seems to be noise around buildings, e.g. the white roof in one of your screenshots. These can be tricky to reconstruct as the entire roof looks the same (all white), so it is difficult to find similar keypoints between images and thus correctly reconstruct the roof.
For such areas, I would suggest to add MTPs in the problematic areas (and reoptimize): https://support.pix4d.com/hc/en-us/articles/202560349
I noticed that you process a rather large project on a small machine. If that would be an option, I would suggest to upgrade the hardware to improve the processing speed. More in these articles:
Hope this helps! Let us know if it improved the project.