Welcome to Kleebz Tech and another video in
our Fooocus for Stable Diffusion series. In this video, I will go over background
replacement using inpainting. Fooocus offers a straightforward and powerful
inpainting engine, which is particularly useful for regenerating parts of an image.
This also includes replacing the background of an image when needed. This can also be done
on real photos, but results can vary with those. With this video, I'm going to assume you
already have Fooocus installed and know the basic features and the basics of inpainting.
If you need information on those things, I do have other videos in the
series that cover all that, and I'll include those in the description. I'll
also be running it with the default run.bat and settings unless I show otherwise, and we're
going to get going on replacing backgrounds. Now, a lot of times, what can happen is you
might generate an image and you like most of it, like the subject or something like
that, but you don't like the background. Just like with regular inpainting, if you
don't like a certain part of an image, you can also do the same to replace the background
on an image. You can also take images, actual photos, and replace the background. I've
actually done it with personal photos as well. So, let's start off with an image here, of a
bowl of fruit. Grab this bowl of fruit that I've generated earlier. Down below, you want to
be on the 'Modify Content, Change Background.' So, you want to change that. You don't want
to be using the standard inpaint for this, that's what we're going to be doing here. And the
prompt will be putting down here of what we want. So, I'm going to go ahead and mask off the area
that I want to replace the background. Do keep in mind that when you do this, you do want to
overlap slightly onto the subject that's going to stay. That way, Fooocus can blend things
in properly, and depending on how perfect you want it, it will determine how much you
want to spend time masking the outside edge. I find that Stable Diffusion does a
pretty good job of fixing the edges, blending things in. Another tip I would suggest
when doing this is not to mask everything all at one time because then if you just want to undo,
like if you hit something by mistake, you'll have to undo the whole thing. So, if you just do
sections at a time and then go ahead and fill in, you're less likely to have to redo your masking,
and that's pretty much for any of the inpainting. Sometimes, I forget, I get going, and the next
thing I know, I've done the whole thing. I make one little tiny mistake, and I have to fix it all.
So, we've gone ahead and masked off the outer edge of this bowl of fruit. We have it on 'Modified
Content,' and we have put a prompt in here: 'a bowl of fruit sitting on a table at a bar.'
I'm going to go ahead and hit 'generate.' When you do these, sometimes, especially in
my experience with people, if you mask around someone's head, it might change the hairstyle
slightly, add extra strands, things like that. So, you may have to go back and touch some things up
with the standard inpainting afterwards. Like on this bowl here, it might actually add a
stem or something to some of the fruit. Okay, so our images are generated, and
as you can see, the backgrounds have been changed. It also has added certain
things, like, look at this picture here, you can see this leaf has been added. As I said,
it may add stuff to the outer edge. Those things can be changed with regular inpainting once you
get what you want for an image. You'll notice it also blends it in; you'll have the shadows and
everything else, so it actually does a pretty good job of blending it in. And it's got this
random apple just hanging onto the back there. Now, another thing I'm going to show you is
actually a little bit more of an advanced feature. It's actually hidden, which is
one thing I wish they didn't hide in the advanced debug features because it's actually
something that you might want to use more often, especially for regular inpainting as well. So,
for this, let's say we had the background was pretty close to what we wanted, we just
wanted it slightly different. We don't want a drastic, completely different
background like we were doing before. When we generated it before, it replaced the
background completely with what we had in the prompt down below. But let's say we want a similar
image, the similar background to what we already have, so we don't want to change it completely.
What you can do at that point, just like in regular inpainting, you can do this as well, is go
into the advanced section and then the developer debug mode. And when you check that off, now you
want to be careful when you get in here and start messing with things. A lot of this stuff can
really have strange effects if you aren't sure. And you've moved some things around, you can
always just refresh the page, and it will set those all back to their original settings.
Now, whenever you are changing this down here, the type of inpainting you're doing, it
will change these settings as well. So, your regular inpainting actually isn't
using the same settings as this by default. This is actually for that section,
the 'add objects, change the background.' So, the only thing you're going to do in here
is first uncheck this 'disable initial latent in inpaint.' For this purpose, if you're don't
want to change this too drastically. Then, we have the 'Inpaint Denoising Strength.' That is similar
to the weight that we have talked about in other videos. It's like a volume knob. So, when
it's at 100%, it completely changes the image, but when we slide this down, it'll actually lower
the amount that the image will change. When you get down real low here, it's going to keep this
almost exactly the same image, just minor details will change. And as you increase that, more and
more changes will happen to that original image. So, for this one, I'm going to just
change it to about 0.5, roughly, just to demonstrate the difference from
what we saw before, where we saw before everything was changed completely. You're
going to notice with this, it's not going to change everything completely. So, we're
going to go ahead and hit 'generate' here. Okay, so we have our images generated,
and as you can see in this batch, they're all very similar to the original image.
We haven't had any drastic changes. I mean, there are still changes, but the
glass is a little bit different, the fruit over here is slightly different.
And if we were to crank that down even lower, you'd see even less change. And if you crank
it up higher, you're going to see more change. So, for example, let's, for this one,
we're going to increase that just a little bit. I know if I increase it way
up, it'll start really changing it. So, I want to kind of give an idea of how
much of a change it will give here. So, I haven't changed anything else, and we're
going to go ahead and generate some more, and I'll show you the difference between how
this denoising strength can affect that change. See, there's more of a change than we had
in the original ones. I'll go ahead and bring one of those up, just so this is the
first batch with the lower denoise when we had this down in the 0.5, all minor changes.
And then, now the new ones, as we can see, much more drastic changes. You notice, you do have
it added in certain things like I had mentioned. So, that gives you an idea, and if we increase
that up even further, it would be a much more drastic change, until we get all the way to one,
where it would do everything. But at that point, you want to just go back to the original
settings. If you're going to be completely replacing the background, you want to adjust the
denoising strength, go ahead and change it down, but do uncheck this because what'll happen is
I'm going to show you the difference. If you leave that checked, and you put this down,
if you leave it part most of the way up, you won't see this happen, but once you
get down into a certain lower amount, you're going to find out. And if you see
this happen, you'll know that you forgot to uncheck that box. Well, there you go. If you
get results like that, then you forgot to uncheck this if you were trying to adjust the denoising
strength. So keep that in mind, but by default, that's what it's going to be normally at when
you're changing using the 'Modify Content' method. So, I'm going to give you another example. This
is actually using a real image. I'm going to take an old photograph here, and I am going
to paint out the background on this one. So, we're going to put 'a woman holding a dog and
sitting in a garden, black and white, old photo.' Okay, so the images are generated, and as you can
see, I did a pretty good job of blending things in with the original and the new images. But one
thing I did want to show with this is what it ends up doing sometimes when it comes to these
things. So, as we can see in this image here, compared to the original image, you'll see that
the hairstyle has changed. It actually has taken and expanded and filled in that hairstyle. So,
that's one thing to keep in mind when you're doing this because the way you're masking the
edges, it may actually add on or change things. You'll see around the edges of this, it's
also, so each one, the hairstyle is slightly different. This one is pretty close to the same,
but that's the sort of thing you're going to run into. You'll also notice other minor details
along the edges, on the shoulders, and things like that will have changed because of the way the
inpainting the background works and the overlap. But those things can be changed later. It does a
pretty good job of actually blending things in. So, you can use it for actual photographs,
generations, play around with it, have fun. It's very useful when you generate something
and you like everything but the background. You can go through and try different
backgrounds and see what works best. That pretty much covers it for the basics
of replacing the background in Fooocus using inpainting and should get you started with fixing
your images. If you found this video helpful, please do consider clicking the like
button because it does help. Any questions or suggestions for video ideas, please leave a
comment. Thanks for watching, and don't forget, I do have other videos on Fooocus and will
have many more in the future. Have a great day!
