Upscaling of images with dark areas creates tiles with unrelated graphics

[PredellaN]

Description

Upscaling of images with very dark areas (low contrast between bright pixels and dark pixels) creates tiles with unrelated graphics.

Steps to Reproduce

Pop_os 22.04 (Linux), NVIDIA RTX A4500 (16GB)

• Install the v0.2.0 addon

• Install stable-diffusion-x4-upscaler

• Load the attached image

• Use the following settings: "a golden palace in an immense cave with quartz crystals that look like stars" (same result happens with tiles sized 128px)

• Get the following result:

Expected Behavior

Would upscale the dark sections of the image in a similar way to the higher contrast parts of the image.

Addon Version

Other (Built from source)

GPU

NVIDIA

[enzyme69]

I wonder if upscaler better to use "Tile Resample" method?

[PredellaN]

In my experience tile resample has the tendency to over-do it with changing the original image, but it might be me applying it in a suboptimal way

[Zee-Germans]

I have the exact problem. And I agree: it only happens in the dark parts of the images. Is there already a solution for this bug?

[github-actions[bot]]

This issue is stale because it has been open for 60 days with no activity.

[github-actions[bot]]

This issue is stale because it has been open for 60 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 7 days since being marked as stale.