Thank you for your reply.
I realized something after reading the following blog:
The initial camera position is far off because the data was captured using an iPad Pro (Wi-Fi only) in a remote location without Wi-Fi access. I discovered that the iPad Pro (Wi-Fi) has a digital compass (iBeacon microlocation) but lacks a GPS/GNSS module. Wi-Fi-only models can only infer their location based on a database lookup of neighboring Wi-Fi networks or the geographic location of a public IP address.
When I captured the data, the device assumed the location was a null island (0, 0).
Regarding the GCPs, I verified them using ArcGIS Pro in the local coordinate system, and they are correctly aligned. I also double-checked each target in the correct order by visualizing the initial position and marking the location of each.
I tried processing the data again following your guidance, but I’m still encountering the data gaps, as shown in the attached report.
Could the distance between the initial and optimized locations be the sole reason for this issue? However, I believe that distance shouldn’t impact the results this significantly.
Beach_Scan_georef_second-quality_report.pdf (3.4 MB)