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Author Topic: Ghosting issue in textures  (Read 478 times)

buscape

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Ghosting issue in textures
« on: August 30, 2022, 04:14:22 PM »
Hello,
I have black holes only in the texture. They are on different places, depending on number of faces and depending on  texture size and counts. Sometimes it's better to have more texture blocks sometimes it's the opposite.
It's a large model of 500m faces. Decimated to 3.5 million and 1 million faces. And I use 4096 x 32 or 4096 x 16 texture blocks.
There are also some ghost textures.

Kind Regards!
« Last Edit: September 12, 2022, 12:22:02 PM by buscape »

buscape

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Re: Black holes in texture
« Reply #1 on: August 31, 2022, 05:24:21 PM »
Perhaps I have to follow these instructions:
https://agisoft.freshdesk.com/support/solutions/articles/31000153952-normal-map-generation

Edit:
I think it worked just to mention that on 4. I need to choose "generate the Diffuse map from Images and select Keep UV mapping mode" and to check "Enable hole filling"
« Last Edit: August 31, 2022, 07:32:13 PM by buscape »

Alexey Pasumansky

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Re: Black holes in texture
« Reply #2 on: September 01, 2022, 04:36:53 PM »
Hello buscape,

Do you use Metashape 1.8.4? Do you still have issues, if you run Build Texture for diffuse map with Generic Mapping mode selected and desired texture atlas size and page count?
Best regards,
Alexey Pasumansky,
Agisoft LLC

buscape

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Re: Black holes in texture
« Reply #3 on: September 11, 2022, 02:23:10 PM »
Yes, I use 1.8.4.
Unfortunately there is again ghost triangles, even when I follow this tutorial:
 https://agisoft.freshdesk.com/support/solutions/articles/31000153952-normal-map-generation
Same model, same steps, one use 32 textures x 4096px, the other 8 textures x 8192px. And on the second one, I see ghost triangles that are missing in the first model.
Now I'm building on the decimated model Texture (8 x 8192px) for diffuse map with Generic Mapping mode and source data - Images.

buscape

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Re: Black holes in texture
« Reply #4 on: September 11, 2022, 06:51:07 PM »
Hello,
Unfortunately, There are always ghost triangles. Each time on different places.

First two images are from textures generated using normal map and source- the non decimated model. As it's described here:
https://agisoft.freshdesk.com/support/solutions/articles/31000153952-normal-map-generation
The last one is diffuse map with Generic Mapping mode and source data - Images

Kind Regards!
« Last Edit: September 11, 2022, 08:16:53 PM by buscape »

buscape

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Re: Ghosting issue in textures
« Reply #5 on: September 13, 2022, 01:23:57 PM »
Close look