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Author Topic: floating markers  (Read 4678 times)

ascreus

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floating markers
« on: December 28, 2015, 03:11:14 PM »
Hello everybody,

I've some problem with some markers that seems to "fly" over the model.
2 cases:
- I place the marker in the photo and it don't stay on the surface of the model (ok for x an y, a lot of error for z values)
- I place the marker in the photo but in the model no x or y  are mantained

please help

antonio

ascreus

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Re: floating markers
« Reply #1 on: December 28, 2015, 03:18:45 PM »
image preview

Alexey Pasumansky

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Re: floating markers
« Reply #2 on: December 28, 2015, 03:22:16 PM »
Hello ascreus,

How many projections for each marker are there in the project?
Best regards,
Alexey Pasumansky,
Agisoft LLC

ascreus

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Re: floating markers
« Reply #3 on: December 28, 2015, 03:28:21 PM »
Hello

from 50 to 99

antonio

Alexey Pasumansky

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Re: floating markers
« Reply #4 on: December 28, 2015, 03:32:46 PM »
Hello Antonio,

Usually such behavior is related either to the incorrect projections or misaligned photos.
The position of the model is 3D is estimated according to the marker projections on individual images as the most closest point to the ray intersection (each ray goes through the camera center and projection on 2D image).

Maybe you can re-save the project in PSZ format without dense cloud, depth maps and mesh model and save it to support@agisoft.com?
Best regards,
Alexey Pasumansky,
Agisoft LLC

ascreus

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Re: floating markers
« Reply #5 on: December 28, 2015, 03:42:18 PM »
ok, i'll send you the psz in few minutes

antonio

Alexey Pasumansky

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Re: floating markers
« Reply #6 on: December 28, 2015, 04:09:20 PM »
Hello Antonio,

Thank you for sending the project file. High projection errors (in pixels) for each marker indicates that there are some issues with the projection placement. So I can suggest to filter the photos by each marker individually and review all the corresponding images where you can adjust the position of the marker projection or remove the blue flag completely, if the marker is not present in the image (for example, its position is covered by the flying vehicle frame or trees in the scene).
Best regards,
Alexey Pasumansky,
Agisoft LLC

ascreus

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Re: floating markers
« Reply #7 on: December 28, 2015, 06:20:59 PM »
thanks!
I'm trying....

ascreus

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Re: floating markers
« Reply #8 on: January 13, 2016, 11:41:14 PM »
Hi Alexey
I partially solved the problem...but something is still wrong...

If i check all gcp on the images I can achieve a very strong reduction of the error, but when I open again the project and try to recalculate the errors..... all the changes in the gcp position are lost, and the error is big again

what's the problem?

antonio

Alexey Pasumansky

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Re: floating markers
« Reply #9 on: January 14, 2016, 12:59:02 AM »
Hello Antonio,

Please check that you are using latest release version (PhotoScan 1.2.2).
Best regards,
Alexey Pasumansky,
Agisoft LLC

ascreus

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Re: floating markers
« Reply #10 on: January 14, 2016, 09:29:38 AM »
1.2.1.2278
no update required...

I'll download it manually


ascreus

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Re: floating markers
« Reply #11 on: January 14, 2016, 05:49:28 PM »
ok
now it works!!!


thank you so much