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Update UPSCALE.md
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title: Upscale
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---
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## **Intro**
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## Intro
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The script provides the ability to restore faces and upscale. You can apply these operations
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at the time you generate the images, or at any time to a previously-generated PNG file, using
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the [!fix](#Fixing Previously-Generated Images) command.
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the [!fix](#fixing-previously-generated-images) command.
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# :material-image-size-select-large: Upscale
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## **Face Fixing**
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## Face Fixing
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The default face restoration module is GFPGAN. The default upscale is Real-ESRGAN. For an alternative
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face restoration module, see [CodeFormer Support] below.
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@ -46,11 +44,11 @@ other GFPGAN related boot arguments if you wish to customize further._
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may run `python3 scripts/preload_models.py` after you have installed GFPGAN and all its
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dependencies.
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## **Usage**
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## Usage
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You will now have access to two new prompt arguments.
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### **Upscaling**
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### Upscaling
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`-U : <upscaling_factor> <upscaling_strength>`
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@ -64,7 +62,7 @@ retain some of those for natural looking results, we recommend using values betw
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If you do not explicitly specify an upscaling_strength, it will default to 0.75.
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### **Face Restoration**
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### Face Restoration
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`-G : <gfpgan_strength>`
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@ -81,7 +79,7 @@ When you use either `-U` or `-G`, the final result you get is upscaled or face m
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to save the original Stable Diffusion generation, you can use the `-save_orig` prompt argument to
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save the original unaffected version too.
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### **Example Usage**
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### Example Usage
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```bash
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dream> superman dancing with a panda bear -U 2 0.6 -G 0.4
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@ -121,13 +119,13 @@ saving it to `ldm/restoration/codeformer/weights` folder.
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You can use `-ft` prompt argument to swap between CodeFormer and the default GFPGAN. The above
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mentioned `-G` prompt argument will allow you to control the strength of the restoration effect.
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### **Usage:**
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### Usage:
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The following command will perform face restoration with CodeFormer instead of the default gfpgan.
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`<prompt> -G 0.8 -ft codeformer`
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**Other Options:**
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### Other Options:
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- `-cf` - cf or CodeFormer Fidelity takes values between `0` and `1`. 0 produces high quality
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results but low accuracy and 1 produces lower quality results but higher accuacy to your original
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@ -157,7 +155,7 @@ dream> !fix ./outputs/img-samples/000044.2945021133.png -G 0.8 -U 2
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A new file named `000044.2945021133.fixed.png` will be created in the output directory. Note that
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the `!fix` command does not replace the original file, unlike the behavior at generate time.
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**Disabling:**
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### Disabling:
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If, for some reason, you do not wish to load the GFPGAN and/or ESRGAN libraries, you can disable them
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on the dream.py command line with the `--no_restore` and `--no_upscale` options, respectively.
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