Messages

16

General / Re: Building a server for Big Data Processing - Build for CPU or GPU Power?

« on: September 19, 2015, 09:45:06 AM »

HI Jon,

I'm using the Amazon EC2 - GPU g2.8xlarge https://aws.amazon.com/ec2/instance-types/ . Be interested to see other peoples opinions.

17

General / Re: Photoscan exterior orientation

« on: September 18, 2015, 01:46:16 PM »

HI Ray,

How are you getting on with this? What camera system are you using? I have "external orientation" files from a Leica Pegasus surver and the pitch, roll and yaw values are provided in gradians so have to be converted to degrees before I import them on the reference tab.

18

General / Re: Difference between "Matching Points" and "Selecting Pairs"

« on: September 17, 2015, 09:25:01 PM »

Thank you! I think you might have saved my sanity. That looks like a much more promising timescale now I've selected "referenced".

19

General / Difference between "Matching Points" and "Selecting Pairs"

« on: September 17, 2015, 08:09:49 PM »

I'm going round in circles a bit at the moment - sorry if I ask stupid questions.

I have an awful lot of data to process. I am running two Professional licenses of Photoscan on AWS - I am connecting via VNC so that I can use the GPU on the remote devices. The remote devices have 4 GPU. I am processing chunks of around 800 photos at a time. The "Align Photos" stage has been taking around 2 hours. I give it the x,y,x pitch, yaw and roll info via a txt import and the camera calibration I set via a python script.

What might cause the "Align Photos" stage to take a lot longer than usual? I've set a job going and it is predicting that the Align photos stage will take 10 hours. The data is stored on a local drive so it's not a network issue.

I have "fixed calibration" unchecked in the "camera calibration" screen for the sensors - does that make any difference?

I am running a similar data set on my home pc (not identical though - photos from a different part of the survey) - this says it is going to take 27 minutes at the stage immediately after the "detecting points" stage of "align photos" - but instead of saying "Matching Points" as the remote PC is saying, it says "Selecting pairs" - is there a magic option that I have selected by accident on my home pc that I've not set on the remote one?

I have previously run successful models on the remote machines in the same sort of timescales as my home one so I know the hardware configuration is up to it and presume I've done something wrong. I've checked the preferences screen and I am using 28 of the 32 cores and all 4 GPU (though I know these are used for the dense point cloud stage rather than this initial stage.)

Any hints and tips will be gratefully received.

20

Python and Java API / Re: Split in chunks - all chunks have all the photos in?

« on: September 17, 2015, 03:41:53 PM »

Ah! Clever. Thank you.

21

Python and Java API / Split in chunks - all chunks have all the photos in?

« on: September 17, 2015, 02:36:21 PM »

I have a chunk with 840 photos in. The photos all have x,y,z info and run along a road so you'd think they should split nicely. I run the "Split In Chunks" from the wiki repository and click the custom menu item. I go with the default  2 x 2 square and I get 4 new chunks:  chunk 1\1 through to chunk 2\2 - but they all have the original 840 photos in.

What am I missing?

22

Python and Java API / Re: loadReference column order

« on: September 17, 2015, 11:30:31 AM »

Thank you! I'm using the wrong version of the manual! Doh.

23

Python and Java API / loadReference column order

« on: September 16, 2015, 01:59:46 PM »

I want to use loadReference (pg 18,19 of the pdf http://downloads.agisoft.ru/pdf/photoscan_python_api_1_1_0.pdf).

Anyone know what the required csv column order is?

24

General / Re: Settings advice required

« on: August 25, 2015, 05:02:20 PM »

Thanks for the offer! However, I've spoken to the support team who have helped me out 

25

General / Settings advice required

« on: August 24, 2015, 12:36:38 PM »

Sorry in advance - a beginner's question.

I'm trying to create a model of buildings along a street from mobile mapping data. I can create a good model using Acute3d and its automatic "level of detail" option. I am trying to create the same sample building in a model in Agisoft. I'm looking for advice as to which settings to use when creating the "dense cloud" and the 3d model. I've tried the default - which creates a model very quickly - but it's not very usable (i.e. very low density mesh that isn't very accurate). I've also tried the densest options with "ultra high". This is very slow and produces a very dense mesh that is "bumpy". So can you please advise me about dense cloud settings and 3D model settings in order to produce a medium density polygon mesh but with accurate vertices - I seem to be able to produce low density and low accuracy or extremely high density that is actually too bumpy and doesn't represent reality.

Any advice greatly appreciated.