Messages

31

General / too much processor consumption?

« on: June 05, 2012, 08:12:27 PM »

Hello again,

I'm wondering whether it is normal that photoscan consumes so much processer power during inspection of a model which is already finished (aligned, geo built and textured).

By inspection I mean: rotating the model, zooming in, moving and placing markers...

I'v a pc with a i7 hexacore processor (12 threads), 24 GB of RAM and nvidia GTX 580 gpu.

when i don't move anything the pc relaxes, but when I do something with it (even the smallest thing) all of my 12 processors go to 100% for a while. It is difficult to work this way. Consumption of RAM memory stays well below the limit (only maximum 25 % is used). I can't remember that I had this problem in the past.

Is it normal that my computer needs to consume almost all processor power for every small move of the finished model?

32

General / Re: align/merge chunks with markers

« on: June 05, 2012, 11:20:37 AM »

Hello Alexey,

I tried to open the file again, but now photoscan gives a pop-up saying:

"Can't open file",

what could be wrong?

It is a .psz file containing two chunks of which the geometry is build, and which I tried to align and merge using markers. I could make this file again, but then I've to rebuild geometry again for the two chunks.

33

General / align/merge chunks with markers

« on: June 03, 2012, 10:10:10 PM »

Hello,

To align or merge chunks, markers could be used in PhotoScan.

But is it necessary to know the coordinates of these markers? The idea was to put 3 markers on each of my two chunks, so that pairs of markers point simultaneously to one of the three locations.

It seems to me that the coordinates are not important at this stage, but aligning chunks without georeferenced markers did not work for me...

34

Feature Requests / Re: Ground control and markers

« on: May 15, 2012, 12:53:22 PM »

I'm using PS 0.8.5 now, but I don't see the "grey flag feature"? Do I have to enable it somewhere?

kind regards,
Jan

35

General / Re: misaligned piece

« on: May 12, 2012, 02:40:03 PM »

Hi fpbv,

no, source images are photos taken with an interval of 5 seconds (with a Ricoh GX200). Resolution is 4000 x 3000 pix.

36

General / misaligned piece

« on: May 11, 2012, 03:19:26 PM »

Hello,

sometimes I encounter a piece of my model being misaligned with respect to the other part of the model, while the piece is well aligned in itself (see attachment for an example).

Does anybody knows a good technique to bring such a misaligned piece back in the right position?

The misaligned piece consists of about 20 pictures, the total model consists of 1100 pictures (overlap should be ok). I've no data on camera positions.

regards,
Jan

37

Feature Requests / writing space for text

« on: May 08, 2012, 12:15:16 PM »

It may be nice to just have some space to write text.

for example for: project description; setup and description of markers; collaborators; source of coordinates; what went wrong, or whatever..

just a blank field where one could write text;

Of course a separate document could also be used for this, but I think it would be more convenient if everything is in 1 file.

38

General / Re: height field, red side of bounding box & coordinate system

« on: May 08, 2012, 10:54:38 AM »

Hello Alexey,

thank you for the quick response;

sometimes Photoscan alligns a subchunk (a collection of photos) wrongly (at a wrong angle) with respect to the other subchunk. When this occurs, the bounding box will be oblique to both subchunks (even after deleting the wrongly alligned set of pictures). But as I understand I just have to rotate the bounding box then until it is more or less on the assumed horizontal plane, and then it will be ok;

(I take pictures with a balloon and a camera without gps receiver, so I have no gps or height info in advance.)

thanks,
Jan 

39

General / height field, red side of bounding box & coordinate system

« on: May 07, 2012, 04:04:33 PM »

Hello,

in the manual is stated the following (with regards to the building geometry step of the model):

"If the height field reconstruction method is applied, the red side of the bounding box will define the reconstruction plane. In this case make sure that the bounding box is correctly oriented."

I guess 'correctly oriented' means for aerial images: the horizontal plane?

But how can one know the horizontal plane at this stage. It is only known after the reference system is set by placing markers with known 3D-coordinates on the 3D model? 

Does "correctly oriented" here merely means "more or less correctly oriented"? What could go wrong if the bounding box is not precisely horizontal?

another question: If I choose top XY when producing an orthophoto in Photoscan, will it project the 3D model on the red side of the bounding box, or on the z=0 plane from the reference system which is calculated from the coordinates of the markers? (probably the latter, but just asking to be sure.)

kind regards,
Jan

40

Python and Java API / Re: starting

« on: March 03, 2012, 06:42:58 PM »

Does anybody know if it is possible to access the GUI of photoscan on a remote linux machine, from a windows machine with xming and x11-forwarding enabled putty.

I always run into this error:
xlib: extension "NV-GLX" missing on display "localhost:11.0"

google didn't help much. Maybe this is just not possible with photoscan?

Is there anyhow a way to use photoscan remotely from a to z:

1) uploading pictures as photoscan input to the remote machine (of course no problem)
2) starting and running photoscan remotely (all steps)
3) downloading photoscan output (e.g. orthophoto)

?

kind regards,
Jan

41

Python and Java API / Re: starting

« on: March 02, 2012, 09:53:46 PM »

Hello Alexey,

but I don't know how to access it.

If I open a python console, by typing python in a terminal in Ubuntu Linux; and type 'import Photoscan' (without quotes)

I get the following error:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named PhotoScan

Do I have to open the python console in a specific folder, or what else could I do wrong?

I use the latest PhotoScan version 0.8.4.1289,

I'm using Ubuntu 10.04 LTS

regards

42

Python and Java API / starting

« on: March 02, 2012, 12:37:04 AM »

Hello,

where to find PhotoScan.py?

as I understand with my little knowledge about python, has to be somewhere,

because the tutorial begins with

import PhotoScan

I've found a map in photoscan-pro/python/lib/python3.2 with a lot of *.py files; but no file has the name PhotoScan.py

43

Bug Reports / Re: DEM export fails

« on: July 26, 2011, 08:12:47 PM »

Hi Alexey,

When I want to rebuilt geometry with 'sharp' reconstruction mode after having built geometry with 'smooth' reconstruction mode already, Photoscan crashes each time after loading photos.

Is it not possible to overwrite the geometry building process then?

If so, is is then possible to delete the geometry building already processed?

otherwise I have to rerun also the alignment process which is 100% as I want it,

thank you,
Jan

44

Bug Reports / Re: DEM export fails

« on: July 26, 2011, 02:00:17 PM »

Hello Alexey,

that makes sense,

thanks,

Jan

45

Bug Reports / Re: DEM export fails

« on: July 26, 2011, 01:06:15 PM »

OK,

I found the answer.

there is no bug (I was (again) seeing something wrong)

However it was not very obvious at first sight.

It seems that the DEM extrapolates values so that it can fill all DEM values in a square which includes the mosaic shape (see attachment were I overlapped the DEM with a semi-transparant orthophoto).

I think that in the previous versions of photoscan DEM values were not extrapolated.