While testing out Pix4Dmapper Discovery Non-Commercial, I keep running into an error at some point while executing 2. Point Cloud and Mesh. The project has 628 calibrated and enabled photos that were shot during 9 flights over a 57 acre area for which I have over 100 surveyed ground control points. Prior to executing this second step, I have brought in the photos and imported the GCPs, properly designated the coordinate system for both imagery and GCPs, successfully ran Step 1, marked photos for a good spread of (22) GCPs and additionally designated check points for the remaining (36) GCPs, reoptimized, saved the project, and ran a quality report. Then, I unchecked Step 1, checked Step 2, and clicked Start to initiate the Point Cloud and Mesh process. It worked away for an hour. I left the PC on overnight. In the morning, I return to the following in the Processing Bar:
Processing: Substep Dense matching started.
Processing: Dense matching
Processing: Dense Processing
Processing: Checking cameras
Processing: Processing group group1
Processing: Group group1, cluster 1 : initializing 628 cameras
Processing: Group group1, cluster 1 : initializing 244257 points
Processing: Group group1, cluster 1 : optimizing 84029976 points [1/3]
Processing: Group group1, cluster 1 : optimizing 71214947 points [2/3]
Processing: Group group1, cluster 1 : optimizing 70662133 points [3/3]
Processing: Group group1, cluster 1 : finalizing 70584162 points
Processing: Group group1, cluster 1 : checking 70584162 points
Processing: Group group1, cluster 1 : coloring 70584162 points
Processing: Group group1, cluster 1 : writing 70584162 points
[Error]: Error while writing points, normals, colors into P4B file <P:\UAV\Projects\CSCmerge/mergecsc/temp/dense/mergecsc_group1_raw_part_1.tmp>
[Error]: Failed to write cluster P4B file <P:\UAV\Projects\CSCmerge/mergecsc/temp/dense/mergecsc_group1_raw_part_1.tmp>
[Warning]: No dense points were created from cluster 0
Processing: Generating tiles
[Error]: Failed to create raw tile 0
[Error]: Generating tiles failed!
[Error]: >>>Generating tiles<<< failed with error (failed to run a step!)!
[Error]: >>>Generating tiles<<< failed with error (failed to run a step!)!
[Error]: Processing group group1 failed!
[Error]: >>>Processing group group1<<< failed with error (failed to run a step!)!
[Error]: >>>Processing group group1<<< failed with error (failed to run a step!)!
[Error]: Dense Processing failed!
[Error]: >>>Dense Processing<<< failed with error (failed to run a step!)!
[Error]: >>>Dense Processing<<< failed with error (failed to run a step!)!
[Error]: Dense matching failed!
[Error]: >>>Dense matching<<< failed with error (failed to run a step!)!
[Error]: >>>Dense matching<<< failed with error (failed to run a step!)!
Processing: Substep Dense matching finished.
The quality report previews of orthomosaic and DSM before densification look good, as does the overlap. The largest projection error for a GCP is 2.143 pixels, and 33 of the 36 check points have been labeled as inaccurate—only 3 of the check points have been marked, with the largest projection error being 1.2433 pixels. Do I need to reduce the number of GCPs and check points?
What should I be doing differently to get the second step to process successfully? I will be glad to provide any additional information to troubleshoot this. Thank you.