RealESRGANx4_fp16

RealESRGANx4_fp16 is an ONNX export of a Real-ESRGAN-based super-resolution model for 4× image upscaling.

Model Description

This repository provides a float16 ONNX version of a Real-ESRGAN super-resolution model designed to enhance image detail and visual quality across a variety of content.

This variant follows the standard Real-ESRGAN approach and may produce sharper, more stylized results compared to more balanced variants.

File

• RealESRGANx4_fp16.onnx

Intended Use

This model is intended for:

• 4× image upscaling
• video frame enhancement
• detail enhancement in images and video pipelines
• ONNX Runtime based applications

Input / Output

• Input: low-resolution image tensor
• Output: 4× upscaled image

Exact preprocessing and normalization depend on the host application.

Usage Notes

• Emphasizes sharper and more detailed output
• FP16 export for improved performance on supported hardware
• Compatible with ONNX Runtime (CUDA, TensorRT, DirectML, CPU)
• May produce more aggressive detail enhancement than general-purpose models

Source / Attribution

This repository contains an ONNX-packaged version of a Real-ESRGAN-based model.

The upstream Real-ESRGAN project is licensed under the BSD 3-Clause License.

Limitations

• GAN-based models may introduce artificial or exaggerated detail
• May oversharpen certain textures or edges
• Output quality depends on input resolution and preprocessing

License

BSD 3-Clause