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Messages - toxicmag

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61
Dear community,

i created various orthomosaics from one location - having now a big one for the whole area and various spots out of this big area but a lot more detailled.

The big one is georeferenced - the smaller detailed orthos are not (in the small areas not enough GCP were available).

I would like to reference the small ones now afterwards to have them at their correct position in the big ortho.
It would be great to have that done without having to re-process all orthomosaics. Just telling them where they are placed inside the big area and export them again.

QGIS would also be available if that helps....

Thanks in advance.

Alex


62
General / Re: Tie points // areas of poor overlapping
« on: November 05, 2017, 02:24:02 PM »
Quote
I noticed that in the latest photoscanPro version you cannot grab the three coloured axis directly on the trackball when moving the model, or the region. Earlier it was easier to rotate one axis, when the two others still kept fixed.

Hello Alex,

That's strange - just checked it in 1.3.4 and 1.4.0 pre-release and it works as expected. Which OS you are using?



Update: About the bug (?) when grabbing the three axis of the trackball => You can only grab one axis if the trackball is permanently switched on in the menu for "visible items". Otherwise it will also appear when you enter any rotation mode, but you will not be able to grab one axis.

Greetings

Alex

63
Feature Requests / Re: Cross-section-based pointcloud editing
« on: November 05, 2017, 01:56:53 PM »
This would be very useful, indeed. I asked for it already some time ago, because it's hard to pick the right points/areas when you want to edit manually and have complex pointcloud-structures... You will always pick other stuff as well and you twist and turn your model like crazy to just select a small piece....   ;)

I would support this request.

64
General / Re: Tie points // areas of poor overlapping
« on: October 19, 2017, 08:01:19 PM »
Ok, is see...
I have only two markers - just to give a rough scale to the orthomosaic and do not have to rely on manual distances to scale it. And the GSD is already shown by photoscan in the workspace pane - but not printed in the report.

But it's fine - i could simply give a screenshot to my client to proof the pixel sizes of the orthos i create.

Some visualization bugs also seem to occur from chunk to chunk (by clicking between model, tie points, orthomosaic randomly). In some cases the orthomosaic does not appear. Export doesn't work as well. Going back to mesh or tie points often show nothing in the model pane.


65
General / Re: Tie points // areas of poor overlapping
« on: October 19, 2017, 06:46:05 PM »
Another bug (?) in the current release is that a printed value with the achieved GSD is not present in the processing report. Something my clients wants to see when i deliver orthomosaics, because i guarantee a specific resolution in advance.

It is shown in the chunk (behind the values of the Orthomosaic) but it's not in the report.

Thanks a lot for a feedback

Alex

66
General / Re: Tie points // areas of poor overlapping
« on: October 18, 2017, 07:52:07 PM »
Last - but not least, there's a small final issue, you might have an answer for.

The model is a little bended (s. screenshot) directly after alignment (also camera optimization does not help).
It should be a straight flat and level model (it's an indoor ceiling o a buidling).

Thanks

Alex

67
General / Re: Tie points // areas of poor overlapping
« on: October 18, 2017, 07:43:09 PM »
Win 10 64bit and a freshly installed 1.3.4 build 5067

Just restarted again and still the same. If you move the mouse over the coloured lines of the trackball they do not become bold like before. The rotation is "free" in all axis when you grab it.

68
General / Re: Tie points // areas of poor overlapping
« on: October 18, 2017, 07:07:10 PM »
Alexey - you're the best.  ;)
Thanks a lot. The issue was solved.

I noticed that in the latest photoscanPro version you cannot grab the three coloured axis directly on the trackball when moving the model, or the region. Earlier it was easier to rotate one axis, when the two others still kept fixed.

Nevertheless - thanks for your quick help.

Greetings

Alex

69
General / Tie points // areas of poor overlapping
« on: October 18, 2017, 06:08:21 PM »
Dear members,

i would like to create an orthomosaic of a wall.
The 3D-structure of the wall is not of any interest, just a large stitched photo with the possibility to measure distances is needed (GCPs exist).

So overlapping was not a focus (~20%) but for sure i need a clean mesh to project on.
Unfortunately there are too few tie points (and because of that holes in the mesh that cannot be closed) and the final orthophoto has a lot of gaps. I tried to improve this fact be placing markers manually but the tie points seem to exist already from one photo to the other, because i got recommended positions for the marker on the other photo.

Does anyone have a solution to get the holes closed?
Or can i somehow put a detailled scale on a stitched photo from different software?

Please take a look on the two screenshots (1 -Photoscan with holes; 2- AutoPano when just stitched).

Thanks a lot

Alex

70
Dear Photoscan-Team,

this feature already was discussed here in the past and in Berlin i talked to you about the possibility to:

# have an orthomosaic projected not just on plain structure, but also on bounded ones (i.e. a chimney)
# cylindrical would be nice, even godlike it would be to define a free plane in space

Thanks for your answers and keep up the great work.


Alex

71
General / Re: Subsampling the dense pointcloud
« on: September 18, 2017, 12:56:04 PM »
Hey SAV,

i totally agree on that subsampling issue based on curvatures. It's great feature.

But - once you leave PS there's no coming back with regard to texturizing the model, right?

Greetings

Alex

72
General / Re: Combine Structured Light Scanning with Photogrammetry
« on: June 30, 2017, 09:30:23 AM »
Hello bigben,

is it possible to import the mesh from external sources and texture it in photoscan?
I thought it's impossible because you lose the relationship between points/mesh and the pictures when you leave the photoscan proocess and work externally.

Thanks

Alex

73
General / Re: Arbitrary or Height-field
« on: May 12, 2017, 05:06:12 PM »
Hey Alexey,   ;D

you are pretty much everywhere in this photoscan-question-world, right??   :D

I found out about that possibility with the bounding box. The red cross determines the pane that will be projected "against".

But if i rotate manually my box will never be perfectly perpendicular to the wall or facade. I tried already and it's hard. Especially in bigger pointclouds. It would be great to define the projection pane just like you can do with the orthophoto projection at the later step. Either by three-point-method, or coordinate system used.

Thanks

Alex

74
General / Re: Arbitrary or Height-field
« on: May 12, 2017, 04:43:39 PM »
Dear users,

i was reading this older post while searching for a solution of a current issue in meshing.

I would like to use the "height field option" for meshing to get better mesh results for orthophotos of walls.
So i need to change projection angle to get perpendicular projections on the wall.

There's a python script available to change "direction" of the height field method in buidling the mesh.
I am not familiar with using Python in Photoscan. Do i need it, or can i just manually rotate the boundary box towards the wall?

What is the difference and advantage of the python script?

Thanks a lot.

Alex

75
General / Re: Orthomosaic // discrepancy between markers in PointCloud
« on: March 16, 2017, 06:32:10 PM »
solved

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