Topics

1

General / OpenGL Driver Error After Build Dense Cloud + Mesh

« on: January 25, 2015, 09:16:47 PM »

Hello,

I've received this error (attached) twice on two different projects after the build dense cloud and build mesh processes have completed.

I'm not sure what is wrong because I have completed similar projects with the same parameters and they finished fine.

Specs of the workstation:
HP Z800 Workstation
CPU: Intel Xeon 4 cores @ 3.20 GHZ
RAM: 192 GB
GPU: NVIDIA Quadro FX 3800

Using Agisoft Photoscan Professional Version 1.0.1 build 1812 64bit
I do not have a log file, but I am attempting to try this again and I will have a log file next time.

The photos are aerial images of a long narrow strip of land.

Please let me know if you need any other information. Any help would be appreciated.

Thank you!

2

General / Creating Ortho/DEM from large amounts of UAS imagery WORKFLOW help

« on: June 02, 2014, 07:32:53 PM »

Hello all,

First of all, thank you for all the help on these forums so far. I'm a beginner in Agisoft and Photogrammetry and am learning quite a lot from here.

My question is about the workflow for my project. I have about 3,500 photos of an area that is ~1.2 square miles. The camera has pretty accurate position data recorded along with omega, phi, kappa, and velocity. I also have GCPs for the whole area. I'm using Photoscan Pro v1.0.4 Build 1874.

I've read the tutorials Agisoft has provided, and the manual, but I'm having trouble figuring out the best workflow for my situation, specifically involving chunks.

For instance, right now, my workflow looks like this:

1. Chunk up cameras. I use ArcGIS to show all our cameras, merge them (because the are from multiple flights),  and then select relatively arbitrary rectangular chunks that overlap with ~2 photos from each line. So that the chunks look like this:

2. Add these photos into the project in their respective chunks and import their locations. Turned out to be ~12 for this project specifically.

3. Align the photos.

4. Build mesh

5. Manually place and refine GCP markers, and import their locations.

6. Here is where I get a bit confused, especially in regards to combining the chunks. I'm not sure on the process after this, when the chunks should be combined, and with what technique. Should it be done before the GCP's are marked? Is this workflow fundamentally flawed because the project should be chunked after the GCPs are marked? When should the cameras be optimized?

Any information at all would be greatly appreciated! Thank you all for your time!