Messages

1

General / Re: How to enter scale bar between markers automatically

« on: August 14, 2023, 05:57:05 PM »

Hi raed,

first, unfortunately, I don't have any longer access to the Pro version.

But in general, it should work if you have calculated the coordinates for the markers in one project, export them, detect markers in your actual project, and import marker positions.

Btw. I would suggest measuring the distances between markers 16 and 26, 1 and 16, and 1 and 26 for higher accuracy. Then you can give marker 16 a positive coordinate, like 20;30. For marker 26 you get for its x-coordinate 20 + the distance between 21 and 26. For the y-coordinate, you can take the same as for marker 21 (30; horizontal baseline).
The coordinates for marker 1 can then be calculated by the cosine sentence.

Best regards,

Kiesel

This may help you: https://agisoft.freshdesk.com/support/solutions/articles/31000148855-coded-targets-and-scale-bars

2

General / Re: How to enter scale bar between markers automatically

« on: August 07, 2023, 09:12:32 PM »

Hallo raed,

you can try to import the measured/calculated coordinates of the coded targets and then hit the update button. When you use a high accuracy for them (1 mm) you don't need to define scale bars.

Best regards,

Kiesel

3

General / Re: Filtering markers by placement (or color: white or green)

« on: April 20, 2023, 12:44:28 PM »

Hallo kmuell,

you can either

- right click in the pointcloud and choose "Filter Photos by Point" or
- right click on an marker and choose "Filter Photos by Markers.

If that is what you want.

Best regards,

Kiesel

4

General / Re: Correct object size

« on: April 20, 2023, 09:52:42 AM »

Hallo addohm,

here you'll find a tutorial about scale bars (Pro version only):

https://agisoft.freshdesk.com/support/solutions/articles/31000148855-coded-targets-and-scale-bars

Best regards,

Kiesel

5

General / Re: DEM Transformation AUSTRIA for RTK Modells

« on: March 20, 2023, 09:48:40 AM »

Hallo Mdaemon,

what about disabling reference for your pictures after alignment and optimise with GCPs only?


regards

Kiesel

6

General / Re: CODED TARGETS

« on: March 13, 2023, 10:34:41 AM »

2) I know they can be imported, manually. The question is: can we automate the process, so no manual work is needed, assigning the correct x,y,z to each GCP.

We need a fully automated workflow, from data upload, to finished DEM/ortho (with GCP´s) output.

Yes should be possible in principle with a script, but the detection of the coded (and uncoded) targets often needs manual interaction.

7

General / Re: Accuracy in Orthomosaic Output is not coming

« on: March 02, 2023, 02:10:09 PM »

Hello Andysmith321,

I have used "Gradual Selection Tool" for reducing the error. In order of reconstruction uncertainty, projection accuracy and reprojection error. I was able to achieve the desired value of 2. However in the process too many points were delete

I use specific values for each project, so that no more than 40-50% points are deleted for each step (reconstruction uncertainty, projection accuracy, reprojection error).

Best regards,

Kiesel

8

General / Re: CODED TARGETS

« on: March 02, 2023, 02:01:25 PM »

Hello Sune,

to 1) even it's uncommon to use coded targets for aerial photogrammetry (because of the needed size) it should be possible, if the coded targets are of the right size and have a good contrast on the photos. When I remember well, the inner circle of a coded target should have a diameter in the range of 20-200 pixel. So you need a resolution, with which you get these values.
to 2) yes coordinates can be imported for all targets at once.

Best regards,

Kiesel

9

General / Re: 360 scanning features object+ textures

« on: February 23, 2023, 09:28:36 AM »

It works, but only when the projector(s) is/are mounted on the turntable too. 

10

General / Re: 360 scanning features object+ textures

« on: February 22, 2023, 12:25:02 PM »

The pattern needs to be stationary on your object. The same pattern have to be photographed from different positions, so the projector needs to be stationary in relation to the object and can't be mounted on top of a moving camera.
That's why you need more than one projector for some objects.

11

General / Re: 360 scanning features object+ textures

« on: February 22, 2023, 09:48:13 AM »

Hello Schneck007,

the software needs to clearly identify the same feature points in different photos. If your object itself is featureless you can help the software with painting (color) dots on it's surface or project a pattern on the surface. Pattern projection has the advantage, that you can take two shots, one with and one without pattern projection, where the photo with the projected pattern can be used for alignment and mesh generation and the photo without for the texture generation. For pattern projection combined with photos without projection both photos needs to be shot from the exact same place and orientation.

Best regards,

Kiesel

12

General / Re: endoscope/borescope photography

« on: February 17, 2023, 11:02:52 AM »

Hi Beth,

I found this from 2017

https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2-W4/33/2017/isprs-archives-XLII-2-W4-33-2017.pdf

and a newer dissertation by Kun Zhan from 2022:

https://elib.uni-stuttgart.de/handle/11682/12565

so it's not only possible. 


Best regards,

Kiesel

13

General / Re: Can I change the camera file path

« on: February 14, 2023, 03:02:05 PM »

Hi JacquesMDC,

right click on a photo in photos window, reference or workspace and choose 'Change Path...'. You are then asked if you want to change the path of 'All images', 'Entire workspace' or 'Selected images' only.

Best regards,

Kiesel

14

General / Re: Maintaining scale when exporting planar orthomosaic?

« on: February 14, 2023, 10:39:40 AM »

Hi j.niles,

perhaps your current view is not 100% orthogonal to the coordinate system?

Best regards,

Kiesel

15

General / Re: How to use precise extrinsic and intrinsic to generate point clouds and mesh

« on: February 14, 2023, 10:05:51 AM »

Hi vkam,

1. I have just exported cameras from an existing project as XML-file.
2. Created a new project.
3  Added photos
4. Imported the cameras XML-file (images are aligned and references are disabled after this step)
5. Built tie points in upcoming menu (can be done in 'Tools/TiePoints/Build Tie Points...' too)

All works fine here.

Btw. there are other file fomats for camera export as you might know, see attchment.

Best regards,

Kiesel