Topics

1

Bug Reports / 1.4.2 Mesh Generation Problem

« on: May 10, 2018, 11:34:00 AM »

Hello,

it's now my 4th time to generate a mesh out of my Point Cloud. It takes extreme long and it aborts with a bad allocation error.

Project Data:

1251 / 1426 Cameras aligned
Dens Cloud 17.905.712 Pts low quality (8 hours 38 min)

i7 5820k
64 GB Ram
GTX 970 4GB
GTX 640 4GB

It takes unusual long almost 11 hours on low quality and ends with bad allocation. I remember on earlier projects which were bigger on old Photoscan release... the creation of the 3D model was much faster (around 2 hours).

So can be wrong?

Thank you!

2

General / AWS Experiences

« on: February 23, 2016, 09:33:13 PM »

Hello everybody,

I need to calculating my upcoming project and I think about using AWS because project is somehow timecritical. Does anybody have experiences using AWS vs. local build pc? The performance interests me really much. It is a big project, so I am planning around 10k Budget for AWS.

But for 10k i also get a quiet decent local machine without struggling network things and to buy multiple licenses. Or is there a license model for monthly paying for network licenses?

3

General / Advice for Workflow on big area in city needed

« on: February 10, 2016, 03:05:38 AM »

Hello everyone,

I got a new project for VR architectural visualisation and I need a 3D representation of a big part of the inner city (19ha, located in germany). Because of the VR experience there is a need of a high resolution. Quality of Google Earth is Minimum (Buildings, not Terrain). The mainfocus on the project is emotion and a consitency. A patchwork of different quality methods would break this.

Important places will be definitly covered with a drone and get a single photogrammetry each of them. The other places should maybe covered also with a drone (on higher altitude) and maybe satellite images. My problem is, that it is very hard to access high res satelliteimages which are usable for Photogrammetry. And it seems to cover the whole region with drones will be very expensive in money, time and datasets. There are a lot of high and complicated buildings and there will also be a ground view from egoperspective. My last project suffered a lot of low quality on walls from buildings because the droneflights covered a lot of roofs in high quality but the facades where underrepresentated.

Does anybody of you have experiences with similar projects? What is your advice? Is there a golden way how drones should fly? Do you know a workflow for working with satellite images?

Thank you very much for every advice you can offer to me :-)

4

Feature Requests / Smart Grid for exactly fitting regions

« on: September 02, 2015, 03:04:03 PM »

If I am working on big grounds, it is to hard to work with one giant scene. So I cut them in seperate parts for model generation. But my problem is, that the region tool cant be used for exactly fitting parts.

So i would like to have some kind of smartregion tool or multi-region-tool / grid where I can choose 2x3 or 3x3 or 5x4 or similar and automatically creates chunks with the splittet point clouds exactly fitting to each other. So i can put them nicley together after model generation / texture generation and export in my 3d app of choice.

Thank you for your interest :-)

5

General / good preview settings

« on: July 17, 2015, 03:51:37 PM »

Hello everybody. I'm still working on my big project - Realtime 3D Village scanned by UAV - 3300 Images

I got problems  to receive a model with good textures and form with this huge scale. So I found a good compromise to have something to work with. It was a heavy lifting from a 2 mio polygon model with lot of textures to a 50k model with one 8k texture. I tried all programs to get a good lowpoly uv setup and used 3D Max to project multitexture highpoly to singletexture lowpoly. But it worked.

Now I and my client are not yet satisfied with the quality. But getting good quality from one piece is almost impossible within the budget and with my hardware (I upgraded to xeon 6-core with 24 GB Ram).

So i tried to puzzle out the right images for a small piece of the scene and just reconstructed a single building. And voila good quality, good texture, small polygon size. The qualityfactor now is 1:1000. But it was really complicated to find the right images. Because the drone flight is systematically around the village, not the building.

So I thought its maybe a good idea to raise the sparse cloud value, to be able to slice my parts through preview rather than scanning through 3000 images by myself to find the right ones for specific buildings. Dense Cloud for whole scene takes too much time and is to heavy to work with. So i want to avoid this step and create dense cloud only for my specific area. I want to save as much time as possible.

What would you do? Are there any recommendations or expieriences? Just to compare a image with the old church (from the whole set) and the new one.

6

General / weired textures?

« on: July 15, 2015, 02:37:47 PM »

Whats this and how I can prevent this? I tested before texture on a sparse cloud model and it showed fine, but not with enough details.

Now I created 4x8192 and mosaic blending.. and it comes to this...

7

General / handle big projects with small workstation

« on: May 21, 2015, 03:51:11 AM »

Hello,

i have UAV recordings (3014 photos, 24 MP each) from an urban district. I need it for a realtime archviz. So polycount should be low, textures high and quality and details should be visible as high as possible. I want to clean it up and remesh later in zbrush.
It took one week to progress until the dense point cloud. I have 5 chunks with around 600 cameras, 55337 tiepoints, 605 depthmaps and a densecloud with 102,423,226 points each. Now i try to create a mesh, highmap is no acceptable result, so i think i need abitrary mesh.

My computer is a i7 920 - 2,6 Ghz quadcore, 12 Gb Ram, GTX 680 4GB and it breaks everytime with not enough memory. I have the files at SSD, but my Pagefiles are on 3 different disks with summary around 100 GB. The logs say bad allocation error. This log was overwritten... i try to start this night with creating mesh over each chunk with batch.

Code: [Select]

Loading project...
loaded project in 142.6 sec
Finished processing in 142.6 sec (exit code 1)
Generating mesh...
grid size: 13456x11640x2561
block size: 254x259x257
resolution: 0.00748951
point count: 102423226
initializing... done in 101.061 sec
generating surface... done in 8360.94 sec
generated 163992048 vertices, 307934052 faces
decimating mesh (307886476 -> 2276071)
Decimating mesh...
Error: bad allocation
Finished processing in 11573.1 sec (exit code 0)
Saving project...
saved project in 488.672 sec
Generating mesh...
Grid size: 13455 x 11639 x 2560
Tree depth: 14
Error: aborted by user
Finished processing in 806.259 sec (exit code 0)
Saving project...
saved project in 395.529 sec
Generating mesh...
Grid size: 13455 x 11639 x 2560
Tree depth: 14
Error: aborted by user
Finished processing in 708.591 sec (exit code 0)
And i use demoversion for evaluation. Is there any strategy / workflow how to handle this data? Thank you for your help!