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OC LoRA Tests

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Verified:
SafeTensor
Type
LoRA
Stats
99
0
Reviews
Published
May 20, 2024
Base Model
SDXL 1.0
Trigger Words
elris,numberbikini
Training Images
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Hash
AutoV2
46A4F33FD4

Elris

A rather simple character design this time to test out a couple of things regarding accessory training, and clustered objects along with experimenting with loopback.

3/4/24 Update:

Blind Test with SDXL training. I'll write an article about this later. Read 'About this Model' for more details.

Kie recommended weight:1

I am probably going to need to change the title of the page now since I am using txt2img ControlNets to augment the dataset for style. (I did use a LoRA to loopback but I used weight of .1~.2 and outd to weaken the effect. I did another round without the LoRA and the difference wasn't very noticable). Read below if you want see the specifics of the augmentation.

  • Enna LoRA focuses on a simpler design to see what mistakes in the turnaround make an impact on the LoRA design

About

This is a place where I keep my tests with single image OC LoRAs. The goal is to try and create a consistent character LoRA with a minimum amount of effort. If you're willing to spend time, you can create a consistent character in this tutorial here (not mine). Keep in mind that these experiments are more of a learning effort rather than producing an accurate LoRA. Due to the limited dataset, these LoRA are highly likely overfit in weird scenarios that I haven't tested yet. I'll probably write an article about the process in the future.

Articles on Workflow

Images are of-course cherry picked with adetailer and hi-res fix with (AnimeSharp4x\UltraSharp4x) at 0.2 ~ 0.5 denoising strengths.

Isabella's original image is the second image in V1. (Base prompt might be useful)

Usage

Recommended Weight for V4: (0.5~0.8) Block Weight can help but isn't completely necessary.

Recommended Weight: 0.6 ~ 0.8 + (LoRA Block Weight with OUTD preset recommended; For version 3, the block weight extension is highly recommended).

For Enna: Recommended Weight: 0.8 ~ 1 (Lower if encounter concept bleeding)

Use terms such as: flat_chest,petite to get character proportions correct.

You can get away with 1 weight with the block weight extension but will need to lower the weight if you want do custom outfits. Requires long prompts that describe that character and the environment to work well.

It should work well enough with anime-based models, I haven't tried anything realistic or semi-realistic. Probably best used with an inpainting workflow.

Problems

  • Inconsistency with coloring and outfit

  • facial expression is overfit

  • Hairline is occasionally flipped

  • V2 is probably better than V3; I ran into a roadblock but decided to publish my results for now

Training

V1

  • 1 Full body shot +1 crop image of face (same image)

  • Trained on NovelAi

V2

  • Reused dataset from V1

  • Added upperbody,lowerbody, and leggings crop

  • lowered repeats

  • more captioning

V3

  • removed flip augmentation

  • reused data set from v1

  • added 3/4 images of the head and skirt, boots to neck,close-up of bangs

  • more captioning

Others

  • I likely hit a wall with Isabella so I might not be able to improve the LoRA any further. There are a few more things I could try with kohyaSS trainer but I'm not expecting much. The main limitation is that the base image isn't very high quality and has image artifacts on zoom up.

V4

  • reused data from v3

  • moved regularization over into the main dataset and added trigger words for style

  • added style images using txt2img with canny and lineart using regional prompter to augment the dataset for style, tagged as 'alternativecostume'

    • selected images with closest colors

  • added style and outfit triggerwords

  • n tokens increased to 4

  • removed block weight during training

Enna

V1

  • Based on a character turnaround

  • Uses same concepts from V4

V1.1

  • minor update with more captioning and lower training rates by 1/10th

V2

  • Added full turnaround of swimsuit and underwear