IC-Light

IC-Light changes the lighting in existing images for people editing portraits, product shots, or other foreground subjects. It lets you explore different lighting conditions using a subject image as the starting point.

• Text-guided lighting: Describe effects such as window light, neon, sunset, or soft studio lighting to relight the foreground image.
• Background matching: Supply a background alongside the foreground and a text prompt to guide the subject's illumination toward the scene.
• Lighting direction: Influence where light comes from with preferences such as left, right, or bottom.
• Normal map estimation: Combine multiple relit versions of an image to estimate a normal map, which describes the subject's surface orientation.

IC-Light runs locally through a Gradio interface, and an official Hugging Face Space hosts the text-guided demo. The local application downloads its models automatically. Its relighting models use Stable Diffusion 1.5 and come in safetensors format; the project code uses the Apache 2.0 license.

The bundled BRIA RMBG 1.4 background remover is restricted to non-commercial use. Commercial projects need a replacement background remover, such as BiRefNet.