Best Way to Use LoRA (LoRA + ADetailer Face Swap)

My AI Force
27 Mar 202404:49

TLDRIn this tutorial, the focus is on enhancing the realism of a LoRA model to resemble actress Scarlett Johansson using headshots for training. The challenge arises when attempting to create full-body images, which don't quite capture her likeness. To overcome this, the ADetailer extension is introduced, allowing the application of the LoRA model to any photo style by swapping faces while preserving the original image's integrity. The process is detailed, including using the inpainting feature to blend the new face seamlessly. The video also touches on using ADetailer with text-to-image generation for versatile face swapping.

Takeaways

  • 😀 The video discusses creating a hyper-realistic LoRA model for actress Scarlett Johansson using only headshots for training.
  • 🔍 When attempting to generate half or full body shots with the same setup, the results don't closely resemble Scarlett Johansson.
  • 🚫 The training session with LoRA was conducted using the SD 1.5 model, which limits the flexibility for generating images.
  • 💡 An innovative solution is introduced: the ADetailer extension, which allows applying a LoRA model to any photo style.
  • 📸 The ADetailer tool isolates the face in an image and swaps it with one generated by LoRA.
  • 🎨 The process involves uploading a photo, selecting a base model, and using the ADetailer extension for face swapping.
  • 🛠️ The 'Skip Image to Image' option in ADetailer keeps the photo's original features intact except for the face.
  • 👤 A face detection model like Face YOLO v8m is used within the ADetailer for accurate face isolation.
  • 🖌️ The 'Inpaint Mask Blur' setting is crucial for blending the swapped face seamlessly into the photo.
  • ⚙️ The 'Use Separate Checkpoint' feature in ADetailer allows using a different base model for the face swap.
  • 🔄 The tutorial also covers how to fine-tune the face swap by adjusting the denoising strength in ADetailer.

Q & A

  • What was the focus of the last episode regarding the AI model creation?

    -The last episode focused on creating a super realistic LoRA model of the actress Scarlett Johansson using only headshots for training.

  • What is the limitation when trying to create half or full body shots with the current LoRA setup?

    -The limitation is that when trying to mix LoRA with full or half body images, the outcome doesn't closely resemble Scarlett Johansson, and the training session limits the use to SD 1.5 based models for generating images.

  • What is the solution proposed to overcome the limitations of the current LoRA setup?

    -The solution proposed is to use the A Detailer extension, which allows applying any base model trained with LoRA to any photo style by isolating and swapping faces.

  • How does the A Detailer extension work in the context of face swapping?

    -The A Detailer extension works by isolating the face in an image and swapping it with the one generated by LoRA, while keeping everything but the face untouched.

  • What is the first step in using the A Detailer extension according to the transcript?

    -The first step is to head over to the image interface of Automatic1111, upload the photo you want to work on, and pick a base model.

  • Why is it recommended to set the denoising strength to zero before using A Detailer?

    -Setting the denoising strength to zero before using A Detailer is recommended to avoid having to adjust it later in the process, as the focus is on the face swap rather than the overall image.

  • What is the role of the 'Inpainting' tab in the face swapping process?

    -The 'Inpainting' tab is used to adjust the inpaint mask blur, which helps ensure the face blends smoothly into the photo without awkward edges.

  • Why is the 'use separate checkpoint' option important in the A Detailer settings?

    -The 'use separate checkpoint' option is important because it allows the selection of a different base model for A Detailer to use, ensuring compatibility with the model used for training the LoRA model.

  • How can the size of the face box in the original image be adjusted for a better fit?

    -The size of the face box in the original image can be adjusted by opening up the mask pre-processing and using the slider to fine-tune the setting.

  • Can A Detailer be used in conjunction with text-to-image generation?

    -Yes, A Detailer can be used with text-to-image generation, allowing for a picture generated in text-to-image to be used for a face swap using a similar approach.

Outlines

00:00

🎭 Creating a Realistic AI Model of Scarlett Johansson

The script discusses the process of creating a highly realistic AI model of actress Scarlett Johansson, focusing on her facial features using headshots for training. This approach results in an AI output that closely resembles Johansson. However, the script points out challenges when attempting to create half or full body shots with the same setup, as the AI model doesn't accurately represent Johansson in those contexts. The video also mentions the limitations due to the use of the SD 1.5 model, which restricts the flexibility in generating different types of images.

Mindmap

Keywords

💡LoRA

LoRA, or Latent Diffusion for Realistic Image Synthesis, is a technique used to enhance the realism of AI-generated images. In the context of the video, LoRA is employed to create a highly realistic model of actress Scarlett Johansson by focusing on her facial features using only headshots for training. This method allows the AI to produce outputs that closely resemble the subject's appearance.

💡ADetailer

ADetailer is an extension tool that enables users to apply a trained model like LoRA to any photo style they desire. It works by isolating the face in an image and swapping it with a face generated by LoRA. This tool is highlighted in the video as a solution to the limitation of using only SD 1.5 based models for generating images, providing more flexibility and creative control.

💡Face Swap

Face swapping is a process where the face in an existing image or video is replaced with another face. In the video, face swapping is used to replace the original face in a photo with the face generated by the LoRA model of Scarlett Johansson, creating a composite image that maintains the body of the original subject but with her face.

💡SD 1.5

SD 1.5 refers to an earlier version of the Stable Diffusion model, which is an AI model used for generating images. The video mentions that training with LoRA was done using the SD 1.5 model, which initially limits the user to using only SD 1.5 based models for image generation. This limitation is overcome by using the ADetailer extension.

💡Image Dimensions

Image dimensions refer to the width and height of an image. In the video, maintaining consistent image dimensions with the original is emphasized to ensure that the face swap looks natural. The script mentions adjusting the CFG scale to keep the dimensions consistent, which is crucial for a seamless face swap.

💡CFG Scale

CFG scale is a parameter in the AI model that controls the control flow of the image generation process. In the context of the video, adjusting the CFG scale allows for fine-tuning the image generation to match the style and quality of the original photo, which is important for a realistic face swap.

💡Denoising Strength

Denoising strength is a setting that controls the level of noise reduction applied to an image. The video script suggests setting the denoising strength to zero when preparing for a face swap with ADetailer to avoid unnecessary processing, which can be adjusted later if needed.

💡Inpaint Mask Blur

Inpaint mask blur is a feature used to smooth the edges of the face in the image where the face swap will occur. By increasing the inpaint mask blur, the video demonstrates how to ensure a smooth transition of the swapped face into the original photo, avoiding any awkward or noticeable edges.

💡Separate Checkpoint

Use separate checkpoint is an option that allows the use of a different base model for the ADetailer process. This feature is crucial as it enables the user to select a base model that matches the one used for training the LoRA model, ensuring compatibility and a more accurate face swap.

💡Text to Image

Text to image refers to the process of generating images from textual descriptions. The video mentions that ADetailer can be used not only for image-to-image face swaps but also for text-to-image generation, providing a broader range of applications for the tool and increasing its utility in various creative projects.

Highlights

Creating a super realistic LoRA model for actress Scarlett Johansson using only headshots for training.

The challenge of generating half or full body shots with the current LoRA setup.

Introduction of the 'a detailer' extension to enhance flexibility in photo style.

How 'a detailer' works by isolating and swapping faces in images.

Tutorial on using the 'a detailer' extension with a step-by-step guide.

Instructions for uploading a photo and selecting a base model in the image interface of Automatic1111.

Skipping the prompt and setting sampling methods for image generation.

Adjusting CFG scale and denoising strength for image consistency.

Setting the denoising strength to zero before using 'a detailer'.

Enabling 'a detailer' and skipping the image to image step.

Choosing an 'a detailer' model like face YOLO v8m for face detection.

Increasing inpaint mask blur for a smooth face blend in the photo.

Controlling noise intensity for facial makeovers without distortion.

Using separate checkpoints for 'a detailer' to select different base models.

Adjusting the face swap box size in the preview window for precision.

Tweaking denoising strength in 'a detailer' for fine-tuning the face swap.

The versatility of 'a detailer' for both image-to-image and text-to-image applications.

Encouragement for viewers to show support and engage with the content.

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