Multidiffusion Scaler: Upscale to 8x

When it comes to upscaling the image in Automatic1111, and if you have low VRAM you must struggle a lot it doing this. Now, they are a methods that will be going to solve your problem. We are using this extension and is quite effective for upscaling. 

There are multiple ways to upscale like hires fix, and ControlNet tile. It just upscales the image without adding extra detailing. But, it's a Multidiffusion extension for Automatic 1111.

Features included:

• Stable Diffusion XL model supported
• StableSR support
• Tiled Noise Inversion
• Tiled VAE
• Regional Prompt Controlling
• Img-to-Img upscaler
• Ultra-scaled image generation

Let's see how to work with this and convert our art to the next level. But, first of all, let's dive into the installation part.

Installation:

There are basically two methods to install this extension. the process will be as simple as you install the other extension.

(A) Method 1: Install from Automatic1111's download list 

1. You need to get your Automatic1111 installed to use this extension. 

2. Start your Automatic1111 WebUI and go to the "Extensions" tab then select the "Available" tab then click "Load from" and search for the "[TiledDiffusion with Tiled VAE]" extension.

3. And at last click "Install". It will take some time to download the prerequisites.

After installation restart your Autoamtic1111 by clicking on "Apply and restart UI" to take effect.

(B) Method 2: Install from the official Github repository.

1. Go to your Automatic1111 WebUI and Select the "Extensions" tab. Now move to the "Install from URL" section and copy and paste the Git URL which we have provided below and at last click Install :

https://github.com/pkuliyi2015/multidiffusion-upscaler-for-automatic1111.git 

2. After installation restart your Autoamtic1111 by clicking on "Apply and restart UI" to take effect.

How to Use this extension?

For using this extension, we don't need to use extra settings. Here, we have to use the "Image to Image" option.

1. Generate your image by inputting your positive and negative prompts. Here, we have generated an image of 512 pixels and we will upscale the image to 4x.

2. Now, click on the button to send the image to the image2image tab available on the right-sided canvas of Automatic1111.

3. Here, in the prompt box remove the old prompt with upscaling prompts. Like highly detailed, uhd, 2k, raw photography, etc.

2. Set up your settings as usual for image generation. We have set it up as follows:

Sampling method: "Euler"

CFG scale:1

Seed: -1

Denoising strength: 0.2

Here, do not try to change the image dimensions.

3. Into Tiled Diffusion extension tab:

Enable the Tiled diffusion option. Then select the method "MultiDiffusion" and Upscaler as per your requirement we have set it up to 4x. And enable the "Noise Inversion". 

Again turn on the "Tiled VAE" option. Set up your encoder file size. And at last hit "Generate".

Now, you can see we have upscaled the image to 4x from 512 pixels to 2048 pixels. You can see the added detailing is very impressive and incredible.