| # PP-OCRv3 Text Detection | |
| PP-OCRv3: More Attempts for the Improvement of Ultra Lightweight OCR System. | |
| **Note**: | |
| - The int8 quantization model may produce unstable results due to some loss of accuracy. | |
| - Original Paddle Models source of English: [here](https://paddleocr.bj.bcebos.com/PP-OCRv3/english/en_PP-OCRv3_det_infer.tar). | |
| - Original Paddle Models source of Chinese: [here](https://paddleocr.bj.bcebos.com/PP-OCRv3/chinese/ch_PP-OCRv3_det_infer.tar). | |
| - `IC15` in the filename means the model is trained on [IC15 dataset](https://rrc.cvc.uab.es/?ch=4&com=introduction), which can detect English text instances only. | |
| - `TD500` in the filename means the model is trained on [TD500 dataset](http://www.iapr-tc11.org/mediawiki/index.php/MSRA_Text_Detection_500_Database_(MSRA-TD500)), which can detect both English & Chinese instances. | |
| - Visit https://docs.opencv.org/master/d4/d43/tutorial_dnn_text_spotting.html for more information. | |
| - `text_detection_xx_ppocrv3_2023may_int8bq.onnx` represents the block-quantized version in int8 precision and is generated using [block_quantize.py](../../tools/quantize/block_quantize.py) with `block_size=64`. | |
| ## Demo | |
| ### Python | |
| Run the following command to try the demo: | |
| ```shell | |
| # detect on camera input | |
| python demo.py | |
| # detect on an image | |
| python demo.py --input /path/to/image -v | |
| # get help regarding various parameters | |
| python demo.py --help | |
| ``` | |
| ### C++ | |
| Install latest OpenCV and CMake >= 3.24.0 to get started with: | |
| ```shell | |
| # A typical and default installation path of OpenCV is /usr/local | |
| cmake -B build -D OPENCV_INSTALLATION_PATH=/path/to/opencv/installation . | |
| cmake --build build | |
| # detect on camera input | |
| ./build/opencv_zoo_text_detection_ppocr -m=/path/to/model | |
| # detect on an image | |
| ./build/opencv_zoo_text_detection_ppocr -m=/path/to/model -i=/path/to/image -v | |
| # get help messages | |
| ./build/opencv_zoo_text_detection_ppocr -h | |
| ``` | |
| ### Example outputs | |
|  | |
|  | |
| ## License | |
| All files in this directory are licensed under [Apache 2.0 License](./LICENSE). | |
| ## Reference | |
| - https://arxiv.org/abs/2206.03001 | |
| - https://github.com/PaddlePaddle/PaddleOCR | |
| - https://docs.opencv.org/master/d4/d43/tutorial_dnn_text_spotting.html | |