Erase White Paper Not Working

[hpbph]

Hello! in one document my Erase white paper has suddenly stopped working, I hadn't changed any settings, but it is possible my cat jumped on my keyboard and did? so what settings would block it from working? Had been working before, have created a new document and it works well on the same drawing I'm trying to erase the white paper from. I can drag and drop the images into a new canvas and edit from there, which is my current solve, but be good to know what is blocking it now so I know if this happens again

[Pšenda]

Screenshot, video or example document? 

[GarryP]

Welcome to the forums @hpbph

What type of layer are you trying to use the Erase White Paper Filter on?

I believe that it will only work on Pixel Layers, rather than Image Layers and, if the Assistant isn’t set to automatically rasterise an Image Layer to a Pixel Layer, it probably won’t do anything (and probably shouldn’t be accessible via a menu but I don’t know how you are applying the filter).

Also, are you sure that you are using Erase White Paper and not Erase White Matte?

As suggested by Pšenda above, it’s often easier to diagnose a visual problem if we can see it. (Full-screen - whole application UI - screenshots and videos are best.)

[hpbph]

Assistant had rasterised it to pixel layer, dropped all layers onto a new document and it worked in there, checked all settings and all settings seem the same, still doesn't work in original document.

I'm applying the Erase White Paper from selecting it  filters>colors>erase white paper

Seems to be an anomaly? Can't share the document, it has to be confidential, which I know is annoying, have my own fix, just wanted to know if this was a problem that could be explained, thanks anyway!

[GarryP]

Thanks for the extra information.

Since you can’t share the document, are you able to share a full-screen (whole application UI) screenshot (maybe with the confidential stuff blurred/obfuscated) so we can see most of what you can see just before you try to use the filter and it doesn’t work?

The solution might be very simple but without more details it might be difficult to know what to suggest.

[hpbph]

here you go

[carl123]

If the document canvas is set to white you may not notice erase white paper is working depending on the content of your document

Please make sure Document > Transparent Background is on then check again

[hpbph]

yip already did that, and the image in question is overlaid on a different coloured background

[Pšenda]

1 hour ago, hpbph said:

Can't share the document, it has to be confidential

You don't have to share the whole document - just an image that doesn't work with erase white paper. Other pages/images can be deleted. Alternatively, even the problematic image can be invalidated before sending - delete/smash confidential information. Alternatively, cut out only the part of the image where the erase white paper can be performed - that is, which contains a white background, but the function will not be performed.

Edited September 4, 2024 by Pšenda

[hpbph]

I have tried different images with white backgrounds, ones that had worked before as well, they too are turned into pixel images, no white background image will work in this document, showing a screenshot of that will just give you all the info again, obviously no one has a solve to this, that's fine, thank you for your input, I'm just going ahead with my current solve as I am under time stress. 

[GarryP]

1 hour ago, hpbph said:

here you go

Thanks for sharing the screenshot.

One thing I can think of at the moment is that Blend Mode for the selected layer is set to Screen and I don’t know if that might affect the Erase White Paper filter because (some of?) the white may be the result of the Screen calculation and I don’t know if the filter takes the Blend Mode into consideration or how much of that layer affects the layers below it.

[hpbph]

Setting blend mode to multiply works, which I guess is what erase white paper is doing anyway? I can see from the thumbnail it hasn't enacted the erase white paper, but it seems like the same command