---
license: bsd-3-clause
pipeline_tag: image-to-image
library_name: onnxruntime
tags:
  - onnx
  - super-resolution
  - upscaling
  - real-esrgan
  - image-processing
---

# 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