mirror of
https://github.com/invoke-ai/InvokeAI
synced 2024-08-30 20:32:17 +00:00
132 lines
5.1 KiB
Markdown
132 lines
5.1 KiB
Markdown
---
|
|
title: Variations
|
|
---
|
|
|
|
# :material-tune-variant: Variations
|
|
|
|
## Intro
|
|
|
|
InvokeAI's support for variations enables you to do the following:
|
|
|
|
1. Generate a series of systematic variations of an image, given a prompt. The
|
|
amount of variation from one image to the next can be controlled.
|
|
|
|
2. Given two or more variations that you like, you can combine them in a
|
|
weighted fashion.
|
|
|
|
!!! Information ""
|
|
|
|
This cheat sheet provides a quick guide for how this works in practice, using
|
|
variations to create the desired image of Xena, Warrior Princess.
|
|
|
|
## Step 1 -- Find a base image that you like
|
|
|
|
The prompt we will use throughout is:
|
|
|
|
`#!bash "lucy lawless as xena, warrior princess, character portrait, high resolution."`
|
|
|
|
This will be indicated as `#!bash "prompt"` in the examples below.
|
|
|
|
First we let SD create a series of images in the usual way, in this case
|
|
requesting six iterations.
|
|
|
|
<figure markdown>
|
|
|
|
<figcaption> Seed 3357757885 looks nice </figcaption>
|
|
</figure>
|
|
|
|
---
|
|
|
|
## Step 2 - Generating Variations
|
|
|
|
Let's try to generate some variations on this image. We select the "*"
|
|
symbol in the line of icons above the image in order to fix the prompt
|
|
and seed. Then we open up the "Variations" section of the generation
|
|
panel and use the slider to set the variation amount to 0.2. The
|
|
higher this value, the more each generated image will differ from the
|
|
previous one.
|
|
|
|
Now we run the prompt a second time, requesting six iterations. You
|
|
will see six images that are thematically related to each other. Try
|
|
increasing and decreasing the variation amount and see what happens.
|
|
|
|
### **Variation Sub Seeding**
|
|
|
|
Note that the output for each image has a `-V` option giving the "variant
|
|
subseed" for that image, consisting of a seed followed by the variation amount
|
|
used to generate it.
|
|
|
|
This gives us a series of closely-related variations, including the two shown
|
|
here.
|
|
|
|
<figure markdown>
|
|
|
|
<figcaption>subseed 3647897225</figcaption>
|
|
</figure>
|
|
|
|
<figure markdown>
|
|
|
|
<figcaption>subseed 1614299449</figcaption>
|
|
</figure>
|
|
|
|
I like the expression on Xena's face in the first one (subseed 3647897225), and
|
|
the armor on her shoulder in the second one (subseed 1614299449). Can we combine
|
|
them to get the best of both worlds?
|
|
|
|
We combine the two variations using `-V` (`--with_variations`). Again, we must
|
|
provide the seed for the originally-chosen image in order for this to work.
|
|
|
|
```bash
|
|
invoke> "prompt" -S3357757885 -V3647897225,0.1,1614299449,0.1
|
|
Outputs:
|
|
./outputs/Xena/000003.1614299449.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1 -S3357757885
|
|
```
|
|
|
|
Here we are providing equal weights (0.1 and 0.1) for both the subseeds. The
|
|
resulting image is close, but not exactly what I wanted:
|
|
|
|
<figure markdown>
|
|
|
|
<figcaption> subseed 1614299449 </figcaption>
|
|
</figure>
|
|
|
|
We could either try combining the images with different weights, or we can
|
|
generate more variations around the almost-but-not-quite image. We do the
|
|
latter, using both the `-V` (combining) and `-v` (variation strength) options.
|
|
Note that we use `-n6` to generate 6 variations:
|
|
|
|
```bash
|
|
invoke> "prompt" -S3357757885 -V3647897225,0.1,1614299449,0.1 -v0.05 -n6
|
|
Outputs:
|
|
./outputs/Xena/000004.3279757577.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,3279757577:0.05 -S3357757885
|
|
./outputs/Xena/000004.2853129515.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,2853129515:0.05 -S3357757885
|
|
./outputs/Xena/000004.3747154981.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,3747154981:0.05 -S3357757885
|
|
./outputs/Xena/000004.2664260391.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,2664260391:0.05 -S3357757885
|
|
./outputs/Xena/000004.1642517170.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,1642517170:0.05 -S3357757885
|
|
./outputs/Xena/000004.2183375608.png: "prompt" -s50 -W512 -H512 -C7.5 -Ak_lms -V 3647897225:0.1,1614299449:0.1,2183375608:0.05 -S3357757885
|
|
```
|
|
|
|
This produces six images, all slight variations on the combination of the chosen
|
|
two images. Here's the one I like best:
|
|
|
|
<figure markdown>
|
|
|
|
<figcaption> subseed 3747154981 </figcaption>
|
|
</figure>
|
|
|
|
As you can see, this is a very powerful tool, which when combined with subprompt
|
|
weighting, gives you great control over the content and quality of your
|
|
generated images.
|
|
|
|
## Variations and Samplers
|
|
|
|
The sampler you choose has a strong effect on variation strength. Some
|
|
samplers, such as `k_euler_a` are very "creative" and produce significant
|
|
amounts of image-to-image variation even when the seed is fixed and the
|
|
`-v` argument is very low. Others are more deterministic. Feel free to
|
|
experiment until you find the combination that you like.
|
|
|
|
Also be aware of the [Perlin Noise](OTHER.md#thresholding-and-perlin-noise-initialization-options)
|
|
feature, which provides another way of introducing variability into your
|
|
image generation requests.
|