Lumion 2025 introduces a powerful new feature for Photo Mode:  AI Upscaling.

Built to improve rendering performance and quality, this tool enables faster generation of high-resolution images without compromising rendering speed or requiring higher-end hardware.

1. How it works:

The AI Upscaler in Lumion allows users to render still images at lower resolutions and then use artificial intelligence to increase the final output resolution, significantly reducing rendering times and GPU load.

This means you can now output at 4K or even 8K a Ray Traced image, even if your hardware does not support it. 

Note that the Upscaler runs locally on your PC. High CPU usage and fan speeds are normal during the Upscaling process.

While not a replacement for native full-resolution rendering, Lumion’s AI upscaler offers a smart and efficient alternative for users who want quality without the hardware strain. It’s an ideal solution for previewing, drafting, and producing high-definition visuals quickly and reliably.

Beta Feature:

Keep in mind that this is currently a Beta feature and still under development, so it may produce some unexpected results. Expect it to improve over time.

2. How to use:

This feature is available as a toggle in the Photo Mode export window:

When enabled, Lumion will render the image at half the selected resolution(dimensions) and then upscale it (locally) to the target size. Both the original and AI-upscaled images are saved, giving you the option to compare or use either version.

3. Benefits:

• Improved Performance: Especially useful on machines with less than 12GB of VRAM.
• Higher Resolution Drafts: Allows faster iterations and testing in higher fidelity.
• More Efficient Rendering: Significantly faster than native 4K Ray Tracing renders.
• Better Than Traditional Resizing: Prevents having to use 3rd party resizing methods.
• Flexible Output: Supports all of the available export resolutions (e.g. render at Print size and upscale to Poster).
  
  

4. Current Limitations:

• No Map Upscaling: Outputs like Depth, Specular, Lighting, and Material ID maps remain at their native resolution.
• Detail Loss: In certain cases, AI upscaling may blur or smooth out fine textures, especially in low-contrast areas.

See Also:

• Knowledge Base: Which resolutions are available for Ray Trace rendering in Photo Mode?
• Knowledge Base: How do you render images at a higher resolution than Poster renderings?
• Knowledge Base: How do you adjust the DPI (or PPI) for your renderings?
• Knowledge Base: What Aspect Ratios and Resolutions are available in Lumion?