InvokeAI/docs/features/OTHER.md

title
Others

Google Colab

Stable Diffusion AI Notebook:
Open and follow instructions to use an isolated environment running Dream.

Output Example:

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Seamless Tiling

The seamless tiling mode causes generated images to seamlessly tile with itself. To use it, add the --seamless option when starting the script which will result in all generated images to tile, or for each dream> prompt as shown here:

dream> "pond garden with lotus by claude monet" --seamless -s100 -n4

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Reading Prompts from a File

You can automate dream.py by providing a text file with the prompts you want to run, one line per prompt. The text file must be composed with a text editor (e.g. Notepad) and not a word processor. Each line should look like what you would type at the dream> prompt:

a beautiful sunny day in the park, children playing -n4 -C10
stormy weather on a mountain top, goats grazing     -s100
innovative packaging for a squid's dinner           -S137038382

Then pass this file's name to dream.py when you invoke it:

(ldm) ~/stable-diffusion$ python3 scripts/dream.py --from_file "path/to/prompts.txt"

You may read a series of prompts from standard input by providing a filename of -:

(ldm) ~/stable-diffusion$ echo "a beautiful day" | python3 scripts/dream.py --from_file -

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Shortcuts: Reusing Seeds

Since it is so common to reuse seeds while refining a prompt, there is now a shortcut as of version 1.11. Provide a **-S** (or **--seed**) switch of -1 to use the seed of the most recent image generated. If you produced multiple images with the **-n** switch, then you can go back further using -2, -3, etc. up to the first image generated by the previous command. Sorry, but you can't go back further than one command.

Here's an example of using this to do a quick refinement. It also illustrates using the new **-G** switch to turn on upscaling and face enhancement (see previous section):

dream> a cute child playing hopscotch -G0.5
[...]
outputs/img-samples/000039.3498014304.png: "a cute child playing hopscotch" -s50 -W512 -H512 -C7.5 -mk_lms -S3498014304

# I wonder what it will look like if I bump up the steps and set facial enhancement to full strength?
dream> a cute child playing hopscotch -G1.0 -s100 -S -1
reusing previous seed 3498014304
[...]
outputs/img-samples/000040.3498014304.png: "a cute child playing hopscotch" -G1.0 -s100 -W512 -H512 -C7.5 -mk_lms -S3498014304

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Weighted Prompts

You may weight different sections of the prompt to tell the sampler to attach different levels of priority to them, by adding :(number) to the end of the section you wish to up- or downweight. For example consider this prompt:

tabby cat:0.25 white duck:0.75 hybrid

This will tell the sampler to invest 25% of its effort on the tabby cat aspect of the image and 75% on the white duck aspect (surprisingly, this example actually works). The prompt weights can use any combination of integers and floating point numbers, and they do not need to add up to 1.

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Simplified API

For programmers who wish to incorporate stable-diffusion into other products, this repository includes a simplified API for text to image generation, which lets you create images from a prompt in just three lines of code:

from ldm.generate import Generate
g       = Generate()
outputs = g.txt2img("a unicorn in manhattan")

Outputs is a list of lists in the format [filename1,seed1],[filename2,seed2]...].

Please see ldm/generate.py for more information. A set of example scripts is coming RSN.

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Preload Models

In situations where you have limited internet connectivity or are blocked behind a firewall, you can use the preload script to preload the required files for Stable Diffusion to run.

The preload script scripts/preload_models.py needs to be run once at least while connected to the internet. In the following runs, it will load up the cached versions of the required files from the .cache directory of the system.

(ldm) ~/stable-diffusion$ python3 ./scripts/preload_models.py
preloading bert tokenizer...
Downloading: 100%|██████████████████████████████████| 28.0/28.0 [00:00<00:00, 49.3kB/s]
Downloading: 100%|██████████████████████████████████| 226k/226k [00:00<00:00, 2.79MB/s]
Downloading: 100%|██████████████████████████████████| 455k/455k [00:00<00:00, 4.36MB/s]
Downloading: 100%|██████████████████████████████████| 570/570 [00:00<00:00, 477kB/s]
...success
preloading kornia requirements...
Downloading: "https://github.com/DagnyT/hardnet/raw/master/pretrained/train_liberty_with_aug/checkpoint_liberty_with_aug.pth" to /u/lstein/.cache/torch/hub/checkpoints/checkpoint_liberty_with_aug.pth
100%|███████████████████████████████████████████████| 5.10M/5.10M [00:00<00:00, 101MB/s]
...success