Merging Completely Processed Subprojects - Need to re-process?

PIX4Dmapper PIX4Dmapper Questions/Troubleshooting
1

I have a large project (8,000 images) that has been split into 15 sub projects of roughly 500 images each.  They have individually been processed completely (steps 1,2, and 3).

When doing a test merge of 4 of these subprojects, they only show step 1 “Initial Processing” as being processed once merged together.  Is it necessary to reprocess steps 2 and 3 for the merged project?  Is there a way to merge the subprojects and retain the processing in entirety?

The reason for splitting into such so many subprojects is that I don’t think my computer system can handle the processing of such a large project although it meets the minimun requirments of16 GB RAM, 80 GB Hard Drive space.

Is there any way to avoid processing the entire project as one?

 

Thanks

2

Hi Kenji,

The merging workflow (learn more) consists in merging the results of step 1 only that you generated separately for each sub-projects. In other words, the results of steps 2 and 3 are lost and you will anyway have to process steps 2 and 3 for the final merged project.

Note that big projects require many computational resources but also the outputs are significantly large, meaning that sharing and using them in other third-party software or application will probably be a problem. This is something important to take into consideration.

An alternative would be to keep the results separated for each sub-projects, meaning that you will obtain several outputs, and use common GCPs to ensure they align correctly.

Hope it helps!