ComfyUI Tutorial Series Ep 29: How to Replace Backgrounds with AI

In this episode, learn how to use ComfyUI to remove and replace backgrounds on product images, portraits, or pets! This step-by-step guide covers everything from masking techniques to generating creative backgrounds using AI and prompts.

What’s Included:

- Removing complex or white backgrounds.
- Setting proper dimensions for best results.
- Creating and inverting alpha masks for precise edits.
- Combining AI tools like Control Net and inpainting for seamless background swaps.
- Fixing imperfections with Photoshop.
- Enhancing images with detailed prompts and upscalers.

Other Episodes to Watch: Episode 14, 19, 22

Get the workflows and instructions from discord

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#replacebackground #comfyui #aitutorial

[mwrocksmysocks]

Your tutorial series has been so helpful, thank you so much for creating and sharing them with us!

[AndreyJulpa]

I've been eagerly waiting for this tutorial, and it was absolutely worth it! Thank you so much for putting this together – it's incredibly helpful and well-done!

[Marcel]

Thank you so much for these inspiring tutorials. Your attention to the details of the work flows are just fantastic.

[gpl]

Works exactly as described and appreciate the tips about the blur for the mask. Thanks for posting.

[Gjeddaisivet]

Thank you for doing so much for the ComfyUI scene!

[SPOONCYBER]

Always well explained, thank you for sharing!

[Uday_अK]

⚡️Pixaroma Creative Juice!
Drink. Create. Conquer! 🔥

[matthallett]

This is a good start. The next step is accurately blending it into the environment and lighting with accurate highlights and transparencies. You should make that your next video.

[AllanMcKay]

Love your channel and all these videos! Curious if you were to ever cover object removal inpainting? Seems that’s one that rather than swapping out objects, completely removing like generating fill seems to be a bit of a roll of the dice whether it works correctly. Curious your thoughts on this? Keep up the amazing work! ❤

[oleg-ger]

Thank you very much for your lessons, I am your permanent student!👋

[bgtubber]

Pretty neat! Regarding the part at 11:24, what about supplying random color noise instead of a real picture for the background? This is what diffusion models usually start with when generating new images from scratch, correct? I've not tried this personally yet, but I think the model will try to interpret the random noise and create an image that better adheres to the prompt since you're giving it random noise (basically randomness, anything) to work with instead of a picture with clearly defined colors and textures. You can see that supplying an image of a red brick wall steers the model into creating an image that has a red tonality to it. Just a thought.

[jamesrademacher]

These videos are great! Now for your final test; can we get an Open-Webui series!?!?

[leonardogoncalves]

Hi, Pixaroma! I’m one of your subscribers and wanted to share an observation. In theory, this regenerative AI technique is very interesting, but in practice, the 1024x1024 resolution feels quite limited. I’m a professional photographer, and one of the biggest challenges with AI-generated images is precisely this issue of low resolution. They work well for internet use but end up restricting other applications. I believe that, over time, this will improve, especially when higher resolutions become available, because the current upscaling methods either change the final result too much or are just not good enough.

[bahethelmy]

Thank you very much for this amazing tutorial. Is there anyway we can add an object in a photo with the right perspective in ComfyUI? That would a great tutorial if possible.

[Darkwing]

I'm curious what the purpose of the Inpaint Crop node is here since you're effectively inpainting the whole image minus a small part within it. From my understanding, those nodes are made to give the same functionality as "inpaint only masked" does in A1111/Forge and are used when inpainting smaller parts of the image.

But regardless, excellent workflow and thanks for sharing!

[rangorts]

is it possible to merge and use a certain percentage of 2 different custom flux dev models

[TheVertigo]

Wait a minute, does the light on the sides of the bottle itself change?

[hulpesergiu]

I am curious why aren't you removing the generated product in comfyUI by using an inpaint fill, since you already have the mask, you could expand it, blur it, and then place your original product on top

[manjukeshm]

My queue option is not present no idea what happened... Can u help me? Is that any bug?

[ivo_tm]

I'm out of good comments :)
Another cool video!