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crates/kreuzberg-paddle-ocr/README.md

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+# kreuzberg-paddle-ocr
+
+[![Bindings](https://img.shields.io/badge/Bindings-alef%20%D7%90-007ec6)](https://github.com/kreuzberg-dev/alef)
+
+PaddleOCR via ONNX Runtime for Kreuzberg - high-performance text detection and recognition using PaddlePaddle's OCR models.
+
+Based on the original [paddle-ocr-rs](https://github.com/mg-chao/paddle-ocr-rs) by [mg-chao](https://github.com/mg-chao), this vendored version includes improvements for Kreuzberg integration:
+
+- **Workspace Dependency Alignment**: Uses Kreuzberg's workspace dependencies for consistency
+- **Edition 2024**: Updated to Rust 2024 edition
+- **ndarray Compatibility**: Aligned with Kreuzberg's ndarray version requirements
+- **Integration**: Designed to work seamlessly with Kreuzberg's OCR backend system
+
+## Features
+
+- Text detection using DBNet (Differentiable Binarization)
+- Text recognition using CRNN (Convolutional Recurrent Neural Network)
+- Angle detection for rotated text
+- Support for multiple languages via PaddleOCR models
+- ONNX Runtime for efficient CPU inference
+
+## ONNX Runtime Requirement
+
+This crate requires **ONNX Runtime 1.24+** at runtime.
+
+Install it:
+
+- **macOS (Homebrew)**: `brew install onnxruntime`
+- **Linux**: Download from [ONNX Runtime releases](https://github.com/microsoft/onnxruntime/releases)
+- **Windows**: Download from [ONNX Runtime releases](https://github.com/microsoft/onnxruntime/releases)
+
+## Usage
+
+This crate is used internally by Kreuzberg when the `paddle-ocr` feature is enabled:
+
+```toml
+[dependencies]
+kreuzberg = { version = "4.2", features = ["paddle-ocr"] }
+```
+
+## Models
+
+PaddleOCR models are automatically downloaded and cached on first use. Supported models include:
+
+- PP-OCRv5 server detection model
+- PP-OCRv5 per-family recognition models (11 script families)
+- PPOCRv2 mobile angle classification model
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+## Acknowledgements
+
+This project is based on the original [paddle-ocr-rs](https://github.com/mg-chao/paddle-ocr-rs) by [mg-chao](https://github.com/mg-chao), originally licensed under Apache-2.0. We are grateful for the foundational work that made this integration possible.
+
+The original paddle-ocr-rs provides Rust bindings for PaddlePaddle's OCR models via ONNX Runtime, enabling efficient text detection and recognition without Python dependencies.