What’s this?

• As you know, IC-Light is a technology that rewrites images to match the background.
• It can change the lighting without affecting the original image, but since it uses Stable Diffusion, the output image may degrade due to resizing and other factors.
• The kijai version has a node that extracts only the lighting information and combines it with the original image, allowing us to ignore the degradation.
• Let’s give it a try😎

Workflow

• The first part is the orthodox IC-Light workflow:
• 🟦 Matting with BirefNet
• 🟥 Fill the transparent parts with gray (since the Kijai version doesn’t have a node for this, you’ll need the huchenlei version’s custom node)
• 🟩 Apply IC-Light
• The second part uses the Detail Transfer node to fix degradation:
• 🟪 The two images input here need to be exactly the same size, so resize them
• 🟨 Detail Transfer restores only the foreground. Naturally, the background will also degrade, so replace it with the original image

How to use?

• This workflow can be used simply by dragging and dropping the foreground and background images into the respective Load Image nodes.