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Author Topic: White Horizontal Lines On Orthophotos  (Read 3002 times)

HMArnold

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White Horizontal Lines On Orthophotos
« on: March 17, 2021, 02:21:04 PM »
Switching over to new computer, installed Metashape 1.7.2, testing with an old set of UAV images.

I get a set of very thin horizontal white lines across the resulting orthophotos, that seem to cut though vegetation in some places.  No lines in any of the source photos.

See attached image

I'm sure its something that's turned on be default that hasn't been before, but I can't seem to find how to disable them.

Any suggestions appreciated

Alexey Pasumansky

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Re: White Horizontal Lines On Orthophotos
« Reply #1 on: March 17, 2021, 03:43:01 PM »
Hello HMArnold,

Can you please specify, if you are observing this problem on any project?

If it is only observed on the particular project, which processing parameters you are using? Are there any missing parts on the source surface (DEM or mesh) or whether any masks are applied to the images?
Best regards,
Alexey Pasumansky,
Agisoft LLC

Diego

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Re: White Horizontal Lines On Orthophotos
« Reply #2 on: March 17, 2021, 06:17:11 PM »
Hello Alexey,

In my case they are presented when exporting the orthophoto in version 1.7.2, the same project opened in version 1.7.1 exports without the white lines, it is a new bug in version 1.7.2, they are only presented in the exported file. It happens to me with which orthophoto in version 1.7.2, the DEM that I use in all cases is from lidar.

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Alexey Pasumansky

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Re: White Horizontal Lines On Orthophotos
« Reply #3 on: March 17, 2021, 10:08:36 PM »
Hello Diego,

Thank you for additional input, we'll try to reproduce and fix the problem as soon as possible.
Best regards,
Alexey Pasumansky,
Agisoft LLC

HMArnold

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Re: White Horizontal Lines On Orthophotos
« Reply #4 on: March 18, 2021, 01:56:03 PM »
I ran a second, much larger project, capturing the settings screen for each step as I went (some attached, all available)

The same lines came out in any exported images in full resolution, but not when the resolution was decreased.

The same lines are visible when exporting full res TIFFs, but apparently not nearly as many lines.

I was wrong about the lines being broken on taller objects, as it also happened on the surface of the water (attached)

The entire image set for the smaller project is 1.2 gb uncompressed, and I can upload it some where if it would help


Alexey Pasumansky

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Re: White Horizontal Lines On Orthophotos
« Reply #5 on: March 18, 2021, 04:15:22 PM »
We are planning to update 1.7.2 installers later today with the fix for this issue.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Alexey Pasumansky

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Re: White Horizontal Lines On Orthophotos
« Reply #6 on: March 19, 2021, 02:15:28 PM »
Hello HMArnold,

Please check, if the problem is resolved in 1.7.2 build 12070 version:
https://www.agisoft.com/downloads/installer/
Best regards,
Alexey Pasumansky,
Agisoft LLC

HMArnold

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Re: White Horizontal Lines On Orthophotos
« Reply #7 on: March 20, 2021, 01:12:44 AM »
Yes, All fixed

No more white lines

Thanks for the great support