Agisoft 1.2.x is significantly slower than 1.1.6

[jazvec]

what the title says.

conditions are exactly the same but the dense cloud calculations take maybe twice as long. thats a major downgrade. i noticed this in the beta in i was hoping it will be fixed. it is not.

where is the problem?

[Alexey Pasumansky]

Hello jazvec,

Can you re-process any project in 1.2 that you have already processed in 1.1.6 and provide the screenshots of the Chunk Info dialogs for both versions and also the processing log (console pane output) for the version 1.2?

[jazvec]

in 1.1.6 i calculated the sparse cloud with key point limit 50k, in gradual selection i set the image count on 2 so i have only points from 3 cameras and more and also i set reprojection error on 1. in the final i got about 20k sparse point cloud.

in 1.2.2 it works somewhat differently. the reprojection error wasnt that high by default (in fact it was bellow 1 so i didnt do anything with it) so i started with key point limit on 30k so i get around 20k sparse point cloud after the cleanup.

everything else is exactly the same and here are the dense cloud calculation results:

1.1.6: 612s
1.2.2: 1113s
almost twice as long.

here are the log files:

https://www.sendspace.com/file/1g9dnk

[Alexey Pasumansky]

Hello jazvec,

Thank you, could you please also add the screenshots from the Chunk Info dialog for additional information?

According to the log the most difference is in the depth maps estimation step. I can also suggest to update graphic card driver to the latest NVidia dirvers.

[jazvec]

1.1.6


1.2.2


updating drivers didnt help. dense cloud calculation is just very slow. same as the beta. can you test it for yourself?
same scene in 1.1.6 vs 1.2.x.?

thanks

[jazvec]

i opened the 1.1.6 scene in 1.2.2 and calculated the dense cloud. it was just 526s. so theres something different with the sparse point cloud calculation in 1.2.2. i dont understand it at all.

[jazvec]

bump,

i made several test yesterday. and i just cannot achieve the same times asi with 1.1.6 only. the sparse point cloud generation is different in 1.2. and thats where the problems are. with sparse cloud from 1.1.6 the dense cloud generation in 1.2 is fast. otherwise its very very slow.

i think this is a big issue and it deserves more attention.

[Alexey Pasumansky]

Hello jazvec,

On the screenshot it is only possible to see the 15 seconds difference in the dense cloud generation. Since the depth maps are not kept in the project, the time for their reconstruction is not shown.

Also we see that there are different settings used for camera alignment operation, so the experments are not equal.

[jazvec]

what? I attached whole log files. there you can see the huge difference. i added the screenshot because you requested them.

and i know the alignment is not the same. thats the problem. the new versin has different settings. for example theres a highest option where in 1.1.6 the max you can go is high. also the point cloud info is totally different.

ill going to make another comparison to be absolutely clear but i know what im saying. theres something wrong in the new version. make a test for yourself and it will be clear to you.

[Alexey Pasumansky]

Hello jazvec,

I'm trying to figure out, what step in the version 1.2 you find much slower or working worse.

On the screenshot with the chunk info the matching time in the version 1.2 is 1 m 30 sec slower than in the version 1.1.6, but the number of keypoints is 50000 vs 30000, and the matching process takes longer time, as there are almost twice more feature points detected to be compared/matched.

The dense cloud generation step (without depth maps estimation) is 15 seconds longer.
And you have confirmed that the dense cloud generation on the same alignment takes almost the same time like in the version 1.1.6.

Maybe you can send us the sample set of images that we can process with the same parameters in both versions and see the huge difference in the processing time, that you are speaking about?

Note that High/Medium/Low accuracy for alignment in the new version has absolutely the same meaning as in the version 1.1.6. Highest option upscales the original images by two times by each side.