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README.md
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---
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---
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# Real-CUGAN Models for TensorFlow.js
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[](https://huggingface.co/shammisw/real-cugan-tensorflowjs)
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[](https://opensource.org/licenses/Apache-2.0)
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This repository provides pre-converted models of **Real-CUGAN** (Real-World-Oriented Cascaded U-Net for Anime Image Super-Resolution) in the **TensorFlow.js GraphModel format**, ready for use in web browsers and Node.js environments.
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These models are optimized for upscaling anime-style images and illustrations with high fidelity, speed, and reduced noise.
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## β¨ Features
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* **High-Quality Anime Upscaling:** Specifically trained for cartoons and anime, preserving sharp lines and details.
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* **Web Ready:** Run directly in the browser with TensorFlow.js for client-side image processing.
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* **Multiple Scales & Models:** Includes various models for different upscaling factors and noise reduction levels.
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* **Lightweight & Fast:** CUGAN is designed to be more efficient than many larger GAN-based upscalers.
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## π Usage Example
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To use these models, you will need to have TensorFlow.js set up in your project.
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```bash
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# Using npm
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npm install @tensorflow/tfjs
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# Using yarn
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yarn add @tensorflow/tfjs
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```
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Here is a basic example of how to load and run a model in JavaScript:
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```javascript
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import * as tf from '@tensorflow/tfjs';
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// The URL to the model.json file in this repository
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const MODEL_URL = '[https://huggingface.co/shammisw/real-cugan-tensorflowjs/resolve/main/real-cugan-models/realcugan/4x-conservative-64/model.json](https://huggingface.co/shammisw/real-cugan-tensorflowjs/resolve/main/real-cugan-models/realcugan/4x-conservative-64/model.json)';
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async function upscaleImage(imageElement) {
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try {
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// 1. Load the model
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console.log('Loading model...');
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const model = await tf.loadGraphModel(MODEL_URL);
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console.log('Model loaded.');
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// 2. Prepare the input tensor from an HTMLImageElement
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// Models are trained on float32 tensors, normalized to the [0, 1] range.
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const inputTensor = tf.browser.fromPixels(imageElement)
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.toFloat()
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.div(255.0)
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.expandDims(0); // Add batch dimension: [h, w, c] -> [1, h, w, c]
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// 3. Run inference
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console.log('Running inference...');
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const outputTensor = model.execute(inputTensor);
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// 4. Process the output and display it on a canvas
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const outputCanvas = document.getElementById('output-canvas');
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await tf.browser.toPixels(outputTensor.squeeze(), outputCanvas);
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console.log('Upscaling complete!');
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// 5. Clean up tensors
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tf.dispose([inputTensor, outputTensor]);
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} catch (error) {
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console.error('Failed to upscale image:', error);
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}
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}
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// Find your input image element and pass it to the function
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const myImage = document.getElementById('my-input-image');
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upscaleImage(myImage);
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```
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---
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## π Available Models
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This repository contains the following converted models. The number in the model name (e.g., `-64`) refers to the tile size used during conversion, which can affect performance and memory usage.
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| Model Type | Scale | Denoise Level | Path |
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| :--------------- | :---: | :-----------: | :------------------------------------------------- |
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| **Conservative** | 2x | - | `real-cugan-models/realcugan/2x-conservative-64/` |
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| **Conservative** | 4x | - | `real-cugan-models/realcugan/4x-conservative-64/` |
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| *More models can be added here as they are converted.* | | | |
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---
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## π Acknowledgements & Credits
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This repository only contains the converted models. All credit for the research and training of the original models goes to their respective creators.
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* **Original Real-CUGAN Models:** The foundational research and PyTorch models were developed by **Bilibili AI Lab**. Their incredible work made this possible.
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* **GitHub Repository:** [bilibili/ailab/Real-CUGAN](https://github.com/bilibili/ailab/tree/main/Real-CUGAN)
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* **TensorFlow.js Conversion:** The methodology for converting these models to TensorFlow.js format was adapted from the excellent **[web-realesrgan](https://github.com/ts-ai/web-realesrgan)** project, which provided a clear path for on-device super-resolution in the browser.
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---
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## π License
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The code and configuration in this repository are released under the **MIT License**.
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The original Real-CUGAN models are subject to their own license terms as specified in the [official Real-CUGAN repository](https://github.com/bilibili/ailab/tree/main/Real-CUGAN). Please ensure compliance with their license if you use these models.
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