How to fill in white gaps with generative AI after transform?

[fotoniko]

How to use generative AI in Photoshop to feel in the white gaps?
Step-by-step instruction, please.

I work in Lightroom and am badly familiar with Photoshop. I have noticed that white ares are not part of the image after I open image for editing in photoshop from lightroom, so i cannot edit them neither can select them. I can, for example, use crop tool in Photoshop to expand image and use generative AI but these gaps left from Lightroom still not filled in. How to fill them?

1. I edit RAW photo ln lightroom.
2. I use transform without cropping - it makes photo with white gaps
3. I hit "edit in Photoshop" - it opens image in PS and white gaps became chessboard
4. What next?

Thanx a lot

[Ian Lyons · Accepted solution]

It's not possible in Lightroom Classic at present. However, you can now do it in Camera Raw 17.1.  The Camera Raw filter also supports generative expand.

[fotoniko]

Where the generative expand is in Camera RAW?

17.1 I have, I do not see it.

And second question - hot to fill in these cheeboard areas in Photoshop? Shold be easy enough, it says in manual I can use Generative Fill and I need to select it but I cannot figire out how to select them. If one is professional in PS, it could be easy for one to explain, isn't?

[fotoniko]

I have found an answer on my second question:

1. Once image is open in PS, Ctrl-Click on a thumbnail in the layer palette and hit "Select Pixels" - it will select all non trasparent pixels in the image

2. Inverse selection in Menu

3. Use Generative Fill.

))

[Ian Lyons]

I forgot to mention that Generative Fill is currently a Terchnology Preview that needs to be enbaled in Camera Raw Preferences. See attached screenshot

[Ian Lyons]

You may find below linked page from ACR 17.0 released in October helpful

https://helpx.adobe.com/camera-raw/using/whats-new/2025.html

[fotoniko]

Thank you for a prompt answer ))
Hugs!