NEW! How to change light with AI
TLDRIn this tutorial, we explore the groundbreaking capabilities of AI in manipulating light in images through a tool called 'IC Light' by Leo V. The tool can relight any image, as demonstrated with various examples, including changing the direction of light and adding different types of light sources like spotlights and gradients. The process involves using workflows created by Keyi, which expand the options for light manipulation. Users can also animate light, moving it around an image based on an editor's input. The tutorial guides viewers on how to install and use the necessary models and custom nodes, and provides tips on controlling the light direction and intensity using shape masks. The result is a powerful and flexible way to enhance images with realistic lighting effects, without the need for complex rendering or generating new images from scratch.
Takeaways
- 🚀 Leo V has developed a model called 'IC Light' that can re-light any image, offering users control over the direction and type of lighting.
- 🎨 The model can interpret lighting preferences such as 'left light' or 'right light' and apply them to the image accordingly.
- 🔄 Users are not limited to pre-selected options; they can expand the capabilities with workflows created by Keyi, offering more lighting options.
- 📂 The model can take an input image and apply lighting effects without the need for rendering or generating a new image.
- 🌆 An example demonstrates the addition of a spotlight and merging it with the input image, resulting in a realistic lighting effect.
- 📁 The model comes with different versions: FC (foreground only), FBC (foreground and background), and FCON (trained with offset noise).
- 📈 The default model (FC) outperformed the FCON model in a user study, making it the recommended choice unless specific noise effects are desired.
- ⚙️ The process involves installing missing custom nodes and models through a manager interface, which can be done quickly and easily.
- 🖼️ Users can adjust the light's position and shape using a shape mask, allowing for precise control over the lighting effect.
- 🌈 The model supports a variety of light types, from simple spotlights to more complex and themed lighting, like 'neon pink blue disco light'.
- 🎥 There's potential for animating the lighting effects, as demonstrated by a moving light in one of the examples.
- 🔗 Links for downloading the workflows and finding installation guides are provided in the video description for further exploration.
Q & A
What is the main focus of the AI tutorial discussed in the transcript?
-The main focus of the AI tutorial is on how to control and manipulate light in images using a model created by Leo V, which can relight any image according to specified preferences.
How does the AI model by Leo V change the lighting in an image?
-The AI model by Leo V changes the lighting in an image by taking an input image and applying a lighting preference, which can be adjusted for direction (left, right, top, bottom) and type of light (e.g., spotlight, sunset, neon).
What are the different models available for relighting an image as mentioned in the transcript?
-The transcript mentions three models for relighting an image: 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).
How can users control the direction and type of light in the image using the AI model?
-Users can control the direction of light by specifying left, right, top, or bottom. The type of light can be chosen from various options like spotlight, sunset, neon, and sci-fi light, among others.
What is the process of using the AI model for relighting an image?
-The process involves loading the AI model into a compatible software like Comfy UI, installing any missing custom nodes, selecting the desired model (FC or FBC), loading the input image, and then using shape masks to control the direction and type of light.
How does the AI model handle the background in the relighting process?
-The FBC model specifically is designed to handle the background along with the foreground and text prompt, merging them together to create a relit image. The FC model, on the other hand, does not include a separate background image in the relighting process.
What is the role 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 (circle, triangle, square) and adjust their location (X and Y coordinates) to control where the light appears and how it illuminates the subject.
How does the AI model ensure the original image details are retained after relighting?
-The AI model regenerates the image rather than simply overlaying a light effect, which helps in retaining most of the initial image details while applying the new lighting conditions.
Can the AI model be used for animating the lighting in an image?
-Yes, the transcript mentions that there is a way to use the AI model for animating the lighting, allowing the light to move around based on the editor's adjustments.
What are workflows in the context of using the AI model for relighting images?
-Workflows are a series of steps or a process that users can follow to achieve a specific outcome with the AI model. They are created by users like Keyi and can be downloaded to expand the options for using the model.
What are some of the potential challenges when using the AI model with different image sizes?
-Mismatched image sizes can cause the AI model to produce wonky or misaligned results, as the model may struggle to correctly merge images of different aspect ratios or sizes.
How can users find more information or resources about using the AI model for relighting images?
-Users can find more information, including install guides and workflows, on the creator's channel or by checking the description provided in the tutorial.
Outlines
🌟 Exploring AI's Control Over Lighting in Images
The first paragraph introduces the concept of using AI to control the lighting in images, specifically mentioning a tool called 'I See Light' by Leo V. This tool allows users to relight any image, as demonstrated with examples showing how the lighting direction can be changed from left to right. The paragraph also discusses the potential for expanded options through workflows created by Keyi, and the ability to add light effects to input images, even animating them. It guides users on how to install necessary components like IC Light and select appropriate models for different lighting effects.
📸 Customizing Light and Shadow Effects in AI-Generated Images
The second paragraph delves into the process of customizing light effects using shape masks and discussing various workflow options. It explains how to install and use different models for relighting images, with or without a background. The paragraph provides a step-by-step guide on using the tool, from installing models to generating images with different light settings. It also touches on the ability to adjust the light's position and shape, and how the AI regenerates the image to incorporate the new lighting conditions.
🎨 Combining Images and Lighting for Creative Effects
The third paragraph showcases the power of combining different images and lighting effects to create unique visuals. It describes the process of inserting a subject into a new background and adjusting the lighting to match, which can result in some distortions due to size differences between images. The paragraph emphasizes the flexibility and control offered by the AI tool, allowing for a wide range of creative possibilities. It concludes with a humorous anecdote about the presenter's lamps being stolen, implying a newfound appreciation for AI-generated lighting.
Mindmap
Keywords
💡AI
💡Relighting
💡Workflows
💡IC Light
💡Custom Nodes
💡Foreground and Background
💡Text Prompt
💡Shape Mask
💡Rendering
💡Animation
💡Stable Diffusion
Highlights
AI can now control and relight any image using a model created by Leo V.
The model allows for dynamic lighting preferences such as left light or right light.
Workflows created by Keyi expand the options for re-lighting images.
Users can input an image and the model will generate a relit version without the need for rendering or generating.
The model can handle various light sources, including spotlights and gradients.
Images can be relit with effects such as sunset or neon pink blue disco light.
The model merges the input image with the light source to create a realistic re-lit image.
Users can control the light direction and intensity with shape masks.
The model can be used with animations, allowing for dynamic lighting effects.
To use the model, one must install missing custom nodes and models.
There are three models to choose from: FC, FBC, and fcon, with FC being the default relighting model.
The FBC model allows for the inclusion of a background image in the relighting process.
The model can be installed and used within the Comfy UI.
Users can adjust the light source's shape, location, and intensity to achieve desired effects.
The model retains much of the initial image's detail even after re-lighting.
The model's output is not a simple overlay but a regenerated image with the new lighting conditions.
Different workflows allow for various creative uses of the model, from simple re-lighting to complex scene creations.
The model's capabilities were showcased by loading a personal image and re-lighting it with different effects.
The model can adapt to different image sizes and aspect ratios, though adjustments may be needed for optimal results.
Total light control in Stable Fusion represents a powerful tool for creative professionals.