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Messages - Kiesel

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1
General / Re: Standard Panorama stich
« on: November 29, 2022, 10:05:52 AM »
Hi bruno.camp,

in the tutorial I have linked in my last post is also a link to sample data. These sample data are from a rectilinear frame camera, so yes it is possible and it's purpose to use such camera to make a panorama.

But for an aerial panorama without keypoints in the sky, you need to give Metashape a little help by importing the directions the photos are made. To use template based stitching is possible in such programms like PTGUI. Those panoramas can be imported in Metashape.

Best regards,

Kiesel

2
General / Re: Aerial Lidar data merge Terrestrial laser scan data
« on: November 28, 2022, 06:01:20 PM »
Hi TJ Jeong,

I havn't done this myself (because we don't have aerial Lidar), but I think that both should be in the same coordinate system. Doesn't you have GCPs in the same system for both?


Best regards

Kiesel

3
General / Re: Aerial Lidar data merge Terrestrial laser scan data
« on: November 28, 2022, 02:00:55 PM »

4
General / Re: Thermal Image Alignment using RGB Images
« on: November 28, 2022, 10:17:19 AM »
Hi Corensia,

just an idea, what about processing as camera rig, where the RGB photos are used for alignment?

Regards


Kiesel

5
General / Re: Standard Panorama stich
« on: November 28, 2022, 09:45:22 AM »
Hi bruno.camp,

search in the help of Metashape for the term 'station', you'll find:

Quote
Building panorama
Metashape is capable of panorama stitching for images taken from the same camera position - camera station. To indicate for the software that loaded images have been taken from one camera station, one should move those photos to a camera group and assign Camera Station type to it. For information on camera groups refer to Loading images to the project section.

To build panorama

1. Select the Build Panorama command from the Workflow menu.
2. Setting parameters for building panorama in the Build Panorama dialog.
3. Click OK button for starting generate panorama.
4. The progress dialog box will appear displaying the current processing status. To cancel processing click Cancel button

...


You might have a look at this tutorial too:
https://agisoft.freshdesk.com/support/solutions/articles/31000148830-spherical-panoramas-generation-

Regards

Kiesel

6
General / Re: Import e57 Laser Scans, Points and Images
« on: November 24, 2022, 12:28:20 PM »
Hello ForensicDJS,

I have just tried this with version 2.0 beta, because we only have the pointcloud of one object and none additional photos.

While the import of the e57-format pointcloud was easy, the import of the panoramas out of the e57 pointcloud was not. As solution we have exported the panoramas from Leica Cyclone and imported them with there coordinates in Metashape. Before the import the panoramas were developed out of the exported EXR-files to TIFF. We need to align the panoramas to be able to generate an orthomosaic in Metashape and not all panoramas could be aligned (only 22 of 25). For the orthomosaic a lot of masking (out the scaffold) was necessary, because when you work with panoramas every point is theoretical seen from every panorama, so the function filter photos by point shows every time all panoramas.

We have exported the DEM, generated out of the pointcloud alone, and the orthomosaic and used both in Autodesk Civil 3D. The quality of the orthomosaic is only good enough in the near of every scan station and decreases fast with higher distance from the scanstation because of the lower and lower intersection angle to the ground. So for a ground orthomosaic and not a facade it is really not recommend. Another issue are the errors of the Leica RTC360 panoramas near the tubes of the scaffolding.


Hope this helps,

Kiesel

7
General / Re: incomplete point selection in point clouds
« on: November 24, 2022, 10:02:46 AM »
Hello Alexey,

yes indeed  :-\ Visible Selection was ticked on in Selection Tools (even I haven't done that), thanks!


8
General / incomplete point selection in point clouds
« on: November 23, 2022, 10:49:24 AM »
Dear Agisoft team,

I have difficulties with the current selection tool for a long time, especially when I work with deeper point clouds like imported laserscans. The current selection tool seams to be restricted to depth, so I have to select again and again the same area to a deeper and deeper space up to ten times and more and even then I can't be sure that I have selected all points in this area, because when I zoom out some "new" points arise. And in this outzoomed view it is of course more difficult to make a precise selection.  Have I overseen something? I hope for a solution soon for an otherwise nice product.

Best regards,

Kiesel

9
General / Re: Agisoft Metashape 2.0.0 pre-release
« on: November 17, 2022, 05:47:49 PM »
Hello Alexey!

thanks for the fast answer! When I switch the interpolation option to  'Extrapolated' it works, thank you very much!

But the 'Build Orthomosaic...' option in the workflow dialog is still grayed out. Are the panoramas included in the point cloud, not enough?
Are additional photos needed? But even when I add the extracted panorama photos to the project and import the reference data (positions) for them (see appendix) the 'Build Orthomosaic---' is still grayed out. Probably because they are not aligned by Metashape? But as I have written the alignment fails for 4 panoramas out of 28.

Regards

Kiesel



10
General / Re: Agisoft Metashape 2.0.0 pre-release
« on: November 17, 2022, 04:23:41 PM »
Dear Agisoft team,

I tried to make a DEM (for a later orthophoto) out of a classified imported RTC360 laserscan in Metashape 2.0, but after processing I get an error: Empty DEM. Is it even possible to make a DEM out of a laserscan only in Metashape 2.0?

(The project contains just the colored laserscan only and none additional photos. When I try to align the panorama photos from the scanstations, only 24 out of 28 align and unfortunately I don't have additional photos this time, that's why I tried it with the pointcloud alone)


You'll find the log-file here: https://www.dropbox.com/s/duwff63tllbk3vy/Agisoft_log_DEM_error.txt?dl=0

Best regards

Kiesel

11
Hi a.denisov,

you can use markers for that and give them a high accuracy.


Best regards

Kiesel

12
General / Re: About Camera projection center in Metashape
« on: November 10, 2022, 10:28:56 AM »
Yes the camera projection center O is the "pinhole" in the camera pinhole model, where the principal point H' is the base point of O in the sensor area (with it's offfets Cx and Cy to the sensor center).

Best regards

Kiesel

13
General / Re: Agisoft Metashape 2.0.0 pre-release
« on: October 19, 2022, 09:45:15 AM »
Dear Agisoft team,

during the installation of version 2.0 our former installed version 1.8.4 is removed. When I try to reinstall version 1.8.4, I get an error message that it isn't possible to install an older version. 
After deinstallation of version 2.0 and a new installation of version 1.8.4 in a extra folder named  'Metashape Pro_1_8_4' and after that a new installation of version 2.0 in an own folder 'Metashape Pro_2_0' version 1.8.4 is nevertheless removed again.
(B.t.w. the even older version 'Metashape Pro_1_7_1' , also installed in an own folder, isn't removed during installation of version 2.0.)

Could you please help me to install both versions side by side, one for production and one for testing the new functions?

Best regards,

Kiesel


14
Yes it is possible to use different cameras/lenses and it is practice in full body scanners to mix 2 or more sorts of cameras. Metashape can handle that by automatic camera grouping in one chunk, so no need to work with multiple chunks.

15
It ignores the steady background feature points of the room , so it should help as long as the relation between camera and background is not changing.

It probably helps to add a photo of the background only (the empty room).

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