Messages

106

General / Creation of DEM

« on: May 09, 2012, 08:07:30 PM »

Ok so I am trying to understand the DEM export better.

When I export DEM does it recompute the model, does it not use the 3D model already reconstructed.

Reason I am asking I am doing some tests and it takes around 45GB of RAM to export a fairly small area, it is like it is reprocessing the model.

Edit: So if I put lower value then default given value it will do this heavy process.

107

Feature Requests / Re: bounding box center by clicking

« on: May 09, 2012, 05:23:45 PM »

Noone think this might work?

108

General / omega phi kappa to Yaw Pitch Roll

« on: May 07, 2012, 06:30:06 PM »

Hey gang

If I have coordinates for each image along with omega phi kappa How would I go by into converting them into Yaw Pitch Roll like Photoscan supports?

And what order is it in.

Omega > Roll
Phi > Pitch
Kappa > Yaw

Or do I have it wrong?

Can I simply insert the omega phi kappa values into Photoscan maybe without anything else.

109

General / Re: VBO support

« on: May 07, 2012, 12:47:39 AM »

Well turning this one makes Photoscan a lot faster browsing around the model, without it can barely move, with it, it does not even have to think.

110

General / VBO support

« on: May 06, 2012, 05:46:58 AM »

So what is this VBO support, there is no info when moused over, nor is there anything in the manuals about it.

Google says Vertex Buffer Object in relations to OpenGL.

Does it force the graphics card to keep more in memory, or what is it all about?

111

General / Re: ply export

« on: May 06, 2012, 05:45:14 AM »

ok, so I just tried this... why does it have to reconstruct the model again? As I just finished a model on high inside the program, then I wanted to have a look at the point cloud in high setting, but exporting point cloud on high has to rebuild the whole model again... Would it not be possible to use the already processed data.

112

General / Re: Graphics cards and memory

« on: May 01, 2012, 01:16:51 PM »

New card out... GTX 690.

http://www.anandtech.com/show/5795/nvidia-unveils-geforce-gtx-690-dual-gk104-flagship-launching-may-3rd

113

General / ply export

« on: April 30, 2012, 04:03:59 AM »

I am wondering is it possible to export only the points with color in for example ply or just raw txt format from Photoscan, I can only export to ply including faces. As well the file is in binary, so I have to open it in meshlab for example and save as ASCII, edit in text editor and then I have a clean vertex only file. However problem is what if you have million or even billions of points, Meshlab has a hard time opening it.

Therefore I would love an output that only outputs like so. for example a ply file. x, y, z, normals and color.

property float x
property float y
property float z
property float nx
property float ny
property float nz
property uchar red
property uchar green
property uchar blue
property uchar alpha


alpha is of course extra and does not have to be there.

I cant imagine this being hard to implement, or maybe I am missing something and it is already there.

I am thinking this because it can often be easier to visualize billions of points then 100 million faces.

P.s. I am actually wondering about the reconstruction process as well, when the GPU step has finished does that not indeed return a simple point cloud data? could then the last steps be skipped if one would only be after the point cloud data, or... that data could be processed a little later, to brake down the reconstruction steps.

114

Feature Requests / bounding box center by clicking

« on: April 30, 2012, 02:56:15 AM »

I have been wondering as I think moving the bounding box is a little clunky... could there be a way to make this a little easier... for example you could click on the model or point and make that the center of the bounding box. As well a numeric value for the bounding box could help a lot with such a click function where you assign how far on each axis it will go from the click you just did.

The box could as well be used to change rotation and orientation of the bounding box, say you want to flip the bounding box 180° or make it more accurate for height field reconstruction.

I hope I make myself clear on this. And I do think this would be a very helpful function.

Little extra, the numeric window could also have a function where you tell it to move x far from its current position, for example if you want to reconstruct a planar model in passes, you can simply move the box numerically instead of manually.

115

General / Re: Cache directory in Photoscan

« on: April 11, 2012, 12:33:08 AM »

Ok so it finished using Height Field... However... it just processed about 1/4 of the data and left the rest empty inside the bounding box.

I saw that it had extracted just under 6 Billion points in the reconstruction step, is there some limitation on how much detail one can get. As well I set the mesh to 50 million, is there a limit there as well or did I not set it high enough to be able to cover the whole area?

116

General / Re: Cache directory in Photoscan

« on: April 10, 2012, 04:49:33 PM »

Hello olihar,

And are you using Height Field object type? Memory consumption should be less than in Arbitrary mode.

Testing Height field now... Seems to use a lot as well... It went through the reconstruction just fine as before, I will await the Generation of the Mesh, as again it seems to be just a single thread process it will be slow.

Its using 110GB right now in the beginning of the process.



Is there any way this step could be multi-threaded in the future?

P.s. can it be that Photoscan is not letting go of the RAM in the reconstruction process when it goes into the Generating mesh step, or does it have to keep everything in RAM?

117

General / Re: Cache directory in Photoscan

« on: April 09, 2012, 08:23:17 PM »

Hello olihar,

What type of data are you processing and what parameters are you using?

Its data from UltraCamX Prime...
196 megapixels (17,310 across track x 11,310 along track),
 PDF here for info.
http://ecogis.pl/PDF/UCXP.pdf

I can run the data just fine on Medium using 10 million faces. But High and Ultra do not seem to be possible, as I get the error above. Its like it manages to cache to a certain point then it gets the error.

The bottom of the logs using medium, just so its been posted here.

Code: [Select]

Linear system solved in 6297.36s
Got Iso-value in 836.567s
Iso-value -18255.5
Normal Size: 1655.4 MB
Set 82933188 root positions
Got triangles in 47892.9s
filtering mesh (165866237 -> 165864653)
decimating mesh (165864653 -> 10000000)
Decimating mesh...
heap cleanup: 273676713 -> 231045734
heap cleanup: 273676715 -> 204805798
heap cleanup: 273676717 -> 153848387
Performance: 404.585 million samples/sec
Finished processing in 60851.1 sec (exit code 1)
saved project in 21.638 sec
>>>

118

General / Re: Cache directory in Photoscan

« on: April 07, 2012, 03:22:16 PM »

I am still getting out of Memory error...

Photoscan has used all the RAM and has cached just over double the RAM as well, see here in the Screenshot it stopped at 111GB.

I have around 600GB in Virtual memory + RAM but it does not seem to be used. What can be done about this?



I get this in the console.

Error: bad allocation
Finished processing in 82892.9 sec (exit code -1)

Here is from the Console, it didn't allow me to post the whole text from the console due to 2000 character limit.

Code: [Select]

Device 1 performance: 209.55 million samples/sec
Device 2 performance: 242.677 million samples/sec
Generating mesh...
Grid size: 28983 x 28983 x 28983
Tree depth: 15
1520903050 points extracted
Tree set in 8634.19 s
Tree size 106828 MB (1750277166 leaves, 2000316761 nodes)
Tree refined in 15102.3s
Tree size 106828 MB (1750277166 leaves, 2000316761 nodes)
Error: bad allocation
Finished processing in 82892.9 sec (exit code -1)
>>>


119

General / Re: Cache directory in Photoscan

« on: April 06, 2012, 01:21:56 AM »

And I guess its worth asking, the Generating Mesh step, is that a single thread process... If so, using the full potential of RAM speed would not be necessary anyways.

120

General / Re: Cache directory in Photoscan

« on: April 06, 2012, 01:13:50 AM »

I am not sure how much RAM you need to be able to work with such a set I am working on right now, I don't think it is wise to try and put it all in RAM, you might as well cache some of it, yes it takes time to process but again, it will finish.

I have now about 1TB in virtual memory + the 64GB in RAM.