JonXL's Minimax H3 Image Upscaler (LORA + Workflow & Batch)

Consider to download the workflow (from 'optional downloads') for easier image extraction and batch processing.

A conceptual lora and workflow to upscale blurry and pixelated images up to 1920x1920 with Minimax H3.

Extensive testing and multi pass training made it now possible to upscale images with Minimax-H3.

The workflow can take a single image, or take a batch input folder and will automatically upscale image(s) to the nearest given resolution up to 1920x1920.
The upscaler seems to work very well for blurry images taken from a video clip or heavily compressed photos.

(!) Note #1: This is an upscaler, not a detailer. It will not add more details, but it can extract a lot of detail from blurry and unsharp images. Don't expect it to add detail to already sharp / AI generated content.

(!) Note #2: For maximum quality the preset resolution of 1920x1920 gives best results. However this can take up to 5 minutes on a RTX5090. Consider lowering your resolution to 1280x1280 if you have a lower hardware specs or less patience.

(!) Note #3: Luckily, you can enable the batch mode option, supply an input and output folder and it will automatically upscale all images for you, even keeping the file names.

Prompt:
A static still blurry pixelated picture crossfades into a clear sharp detailed picture, 4psc4l3,

// always use this prompt!

Authors comment

Feel free to post your safe for work results on this LoRa's page too!

Please enjoy upscaling your content with this upscaler lora and workflow!

Usage:

• Use the following trigger sentence to activate the image generation

  • A static still blurry pixelated picture crossfades into a clear sharp detailed picture, 4psc4l3,

• Seems to work very well on resolutions of 1280x1280 and 1920x1920

  • It will auto-scale the input image to the nearest resolution

• Default values of 24 frames, CFG 1 and Lora strength one should be kept

  • You can change the CFG and frame count, it might add more detail but it's not recommended unless you like to experiment

• Technically, you can also use this in Text2Video mode, and generate photorealistic imagery. It was trained on the same dataset as https://civarchive.com/models/2884206/minimax-h3-photorealistic-image-generator-lora-workflow

• Let me know your feedback

Known issues:

• You may need to install some frequently used nodes, mostly Kijai's nodes and VideoHelperSuite

  • https://github.com/kijai/ComfyUI-KJNode