NEW! How to change light with AI

Sebastian Kamph
13 May 202411:42

TLDRIn this tutorial, we explore the groundbreaking capabilities of AI in manipulating light within images. Leo V has developed a model that can relight any image, as demonstrated with various examples. The process involves selecting a lighting preference, such as left or right light, and the model adjusts the image accordingly. The technology is not limited to simple directional changes; it can incorporate complex lighting scenarios, including shadows and gradients. The tutorial also covers the integration of this model into comy, a platform for creating and managing custom nodes, and showcases different workflows for achieving desired lighting effects. The power of this technology is evident as it retains the original image's integrity while allowing for creative control over lighting, making it an exciting tool for both beginners and experienced users alike.

Takeaways

  • 🌟 AI technology can now control and manipulate light in images, offering new creative possibilities.
  • 🎨 Leo V has developed a model that can relight any image, allowing users to change the direction and type of light.
  • 🖼️ The system is not limited to pre-selected options; it can be expanded with workflows created by the community.
  • 📂 Users can input their own images and the AI will generate lighting effects that blend seamlessly with the original image.
  • 🌇 The AI can interpret and recreate complex lighting scenarios, such as sunlight or neon lights, in a realistic manner.
  • 📱 The process involves installing necessary custom nodes and models, which are available for download.
  • 🔍 There are different models available for different lighting conditions, including ones with and without background images.
  • 📈 The default relighting model without offset noise performed better in user studies and is recommended for ease of use.
  • 🛠️ Users can control the direction and shape of the light using shape masks, allowing for precise adjustments.
  • 🧩 The system is capable of handling animations, meaning lights can be made to move and change over time in a video sequence.
  • ⚙️ Workflows can be installed and customized, providing users with a range of tools to manipulate lighting in their images.

Q & A

  • What is the main topic of the video?

    -The main topic of the video is about using AI to change and control lighting in images through a model created by Leo V, which can relight any image based on user preferences.

  • How does the AI model by Leo V work?

    -The AI model works by allowing users to select lighting preferences and then applying those to an input image. It can simulate different light sources and directions, and even take into account shadows and other complex lighting scenarios.

  • What are the different light settings that can be adjusted in the model?

    -Users can adjust various light settings such as left light, right light, top light, and bottom light. The model is not limited to these selections and can be expanded with workflows to offer more options.

  • How does the model handle background images?

    -The model has the capability to work with both foreground and background images. There are different versions of the model that can be used depending on whether a background image is included or not.

  • What is the process of installing and using the model in a workflow?

    -To use the model, one must first load the workflow, install any missing custom nodes, and then install the model. After the model is installed, users can load an image and start adjusting the lighting based on their preferences.

  • How does the model handle animations?

    -The model can also be used with animations, allowing the light to move around based on the editor's adjustments, providing dynamic lighting effects in moving images.

  • What are the different models available for relighting?

    -There are three models available: FC (default relighting model conditioned on text and foreground), FBC (relighting model conditioned with text, foreground, and background), and FCON (same as the default model but trained with offset noise).

  • What is the significance of the shape mask in controlling the light?

    -The shape mask is used to define the shape and position of the light source in the image. Users can select different shapes like circles, triangles, or squares and adjust their size and location to control where the light appears.

  • How does the model handle different types of light?

    -The model can simulate various types of light, such as spotlights, neon lights, or sci-fi themed lights. It can also merge these lighting effects with the input image while retaining much of the original image's details.

  • What are the system requirements for using this AI model?

    -The system requirements include having a workflow compatible with the model, a suitable AI platform like Comfy UI, and enough storage space to download the models, which are approximately 1.7 GB each.

  • Can the AI model be used for professional photography editing?

    -Yes, the AI model can be used for professional photography editing as it allows for precise control over lighting, which is a critical aspect of image enhancement and post-processing.

  • What are the potential limitations of using the AI model for relighting images?

    -Potential limitations include the need for a compatible workflow, the initial setup and installation process, and the model's ability to accurately interpret and render complex lighting scenarios, especially when dealing with unusual shapes or extreme lighting conditions.

Outlines

00:00

🚀 Introduction to AI Image Relighting with I See Light by Leo V

The paragraph introduces a revolutionary AI tool called 'I See Light' by Leo V, which can dynamically relight any image. The tool is showcased with examples of how it can change the lighting direction, such as from left to right, and even incorporate shadows. It is mentioned that the tool is not limited to pre-selected options and can be expanded with workflows created by Keyi, offering more control and customization. The speaker also discusses the ability to add light effects to images, including spotlights and gradients, and hints at the possibility of applying these effects to animations. The process of using the tool involves loading the application, downloading workflows, and installing necessary custom nodes and models.

05:01

📸 Exploring I See Light's Workflows and Customization Options

This paragraph delves into the practical use of I See Light, explaining how to install and use different models for relighting images. It covers the process of installing models, such as FC (foreground conditioned) and FBC (foreground and background conditioned), and choosing the appropriate model based on whether a background image is included. The paragraph also demonstrates how to control the direction and type of light using shape masks and discusses the impact of different light settings on the image. The speaker experiments with various light styles, like neon pink blue disco light and blue sci-fi light, to show the versatility of the tool. Additionally, the paragraph touches on troubleshooting, such as dealing with missing nodes and ensuring the correct model is selected during the generation process.

10:03

🎨 Advanced Image Manipulation with I See Light's Lighting Control

The final paragraph discusses advanced image manipulation techniques using I See Light, focusing on how it can cut subjects out from their backgrounds and integrate them into new, beautifully lit scenes. It highlights the potential issues that may arise due to mismatched aspect ratios between the input images but emphasizes the tool's powerful capabilities. The speaker also briefly mentions a previous video on lighting control and expresses excitement about the advancements in the field, concluding with a humorous anecdote about lamps being stolen.

Mindmap

Keywords

💡AI

AI, or Artificial Intelligence, refers to the simulation of human intelligence in machines that are programmed to think like humans and mimic their actions. In the context of the video, AI is used to create a model that can relight any image, demonstrating the advanced capabilities of AI in manipulating visual data.

💡Relighting

Relighting is the process of altering the lighting conditions in an image or a scene. In the video, the AI model developed by Leo V is capable of relighting images, which means it can change the direction and type of light in a photograph to achieve different visual effects, enhancing the image according to user preferences.

💡Workflows

Workflows are sequences of connected steps or processes that are designed to be followed in a specific order to achieve a certain outcome. In the video, workflows are created by Keyi to expand the capabilities of the AI model for relighting images, offering users more options and flexibility in how they can manipulate the lighting in their images.

💡Custom Nodes

Custom nodes are user-defined components in a software application that can be used to extend the functionality of the application. In the video, the user needs to install missing custom nodes to utilize the full capabilities of the AI model for relighting, such as the IC Light node, which is essential for the process.

💡Foreground and Background

Foreground refers to the elements that are in the front or appear closer to the viewer in an image, while background refers to the elements that are further away or behind. In the context of the video, the AI model can be conditioned on both the text, foreground, and optionally the background to generate relit images that incorporate these elements cohesively.

💡Text Prompt

A text prompt is a textual input that guides the AI model to generate specific outcomes. In the video, the text prompt is used to inform the AI model about the desired lighting effect, such as 'Spotlight' or 'Neon Pink Blue Disco Light,' which then influences how the model processes and relights the image.

💡Shape Mask

A shape mask is a tool used in image editing that allows for the selection of specific areas of an image in a particular shape, such as a circle or a triangle. In the video, the shape mask is used to control the direction and area of the light in the relighting process, allowing for precise manipulation of the light effect.

💡Rendering

Rendering is the process of generating an image, frame, or animation from a 2D or 3D model by means of computer programs. It involves calculating the final appearance of the model with respect to lighting, shadows, and colors. In the video, the term is used to describe the process where the AI regenerates the image after applying the desired lighting effect.

💡Animation

Animation refers to the technique of creating the illusion of motion in a sequence of images. It can be used in various contexts, including film, television, and digital media. In the video, the script mentions the possibility of applying the AI relighting model to animations, suggesting that the lighting effects can be dynamic and change over time in a video sequence.

💡Stable Diffusion

Stable Diffusion is a term that likely refers to a stable and reliable process or system for image generation and manipulation. In the context of the video, it implies that the AI model for relighting images provides consistent and high-quality results, offering users total control over the lighting aspects of their images.

Highlights

AI can now be used to control and re-light any image.

Leo V has created a model that can dynamically change the lighting of a photo.

The model allows users to select lighting preferences such as left, right, top, or bottom light.

Workflows created by Keyi expand the options for light control.

The AI can take an input image and apply lighting effects without the need for rendering or generating a new image.

IC Light, a tool for relighting images, has been natively implemented into Comfy.

Different models are available for relighting, including FC, FBC, and fcon, each with unique features.

The default relighting model is conditioned on text and foreground, without a background image.

The FBC model allows for the inclusion of a background image along with the foreground for more complex lighting.

The fcon model is trained with offset noise, offering a different approach to lighting.

Users can install the desired model through the terminal, with each model being around 1.7 GB in size.

The shape mask is used to control the direction and focus of the light in the image.

Lighting effects can be previewed and adjusted in real-time before final generation.

The AI lighting tool retains much of the original image's details, even after applying lighting effects.

Different lighting styles, such as neon pink blue disco light or blue sci-fi light, can be applied to the image.

Animations are also possible with the lighting tool, allowing for dynamic light movement.

The tool can be used with various workflows to achieve different lighting effects and creative outcomes.

Users can input any image and apply AI-controlled lighting to create unique and compelling visuals.