feat(models): add multilingual model routing and licensing metadata. (issue #739)

README.md

@@ -191,6 +191,25 @@ If you find this project useful in your research, please consider cite:
 
 ### ⚖️ License
 
-The copyright of the OCR model is held by Baidu, while the copyrights of all other engineering scripts are retained by the repository's owner.
+License
 
-This project is released under the [Apache 2.0 license](./LICENSE).
+### Source code
+
+RapidOCR source code and engineering components are copyright
+RapidOCR Authors and licensed under the Apache License, Version 2.0.
+See [LICENSE](./LICENSE).
+
+### Models
+
+The bundled and hosted OCR model files are derived from official
+PaddleOCR models. Copyright in the upstream model weights is held by
+Baidu and/or the respective PaddleOCR rights holders.
+
+The applicable upstream models are distributed under the Apache
+License, Version 2.0. Converted model artifacts, including ONNX
+representations produced by RapidOCR, are redistributed under the same
+license terms.
+
+RapidOCR does not claim ownership of the upstream model weights.
+Model-specific sources, hashes, attribution, and conversion information
+are documented in [MODEL_LICENSES.md](./MODEL_LICENSES.md).

python/LICENSE

@@ -0,0 +1,203 @@
+Copyright (c) 2021 RapidOCR Authors. All rights reserved.
+
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python/MODEL_LICENSES.md

@@ -0,0 +1,162 @@
+# RapidOCR Model License and Attribution Notice
+
+This document records the license, copyright attribution, provenance, and
+redistribution requirements for OCR model artifacts distributed by RapidOCR.
+It does not replace or modify the Apache License, Version 2.0.
+
+## 1. Separate licensed works
+
+RapidOCR contains two separately copyrighted categories of work:
+
+1. **Source code and engineering components.** Copyright is held by the
+   RapidOCR Authors. These components are licensed under the Apache License,
+   Version 2.0, as described in the RapidOCR project `LICENSE` file.
+2. **OCR model artifacts.** Copyright in the upstream model weights is held by
+   Baidu and/or the applicable PaddleOCR rights holders. RapidOCR does not
+   claim ownership of the upstream model weights.
+
+Both categories are distributed under the Apache License, Version 2.0, but
+their copyright ownership and provenance remain separate.
+
+## 2. Scope of this notice
+
+This notice applies to the model artifacts listed in Section 6. Other model
+artifacts available through RapidOCR may have different upstream versions or
+terms and must be reviewed against their own source records before being
+redistributed.
+
+This notice does not automatically cover third-party models, datasets, fonts,
+sample images, inference runtimes, or other assets that are not derived from
+official PaddleOCR models. Those works remain subject to their own applicable
+terms.
+
+## 3. Upstream attribution and licensing evidence
+
+The models in Section 6 are released by, or derived from models released by,
+the PaddleOCR project. PaddleOCR is released under the Apache License, Version
+2.0. Official PaddlePaddle model cards identify the PP-OCRv6 model weights and
+ONNX representations as `Apache-2.0`. PaddleOCR's official model list
+identifies the legacy text angle classification model and its official
+distribution source.
+
+Upstream references:
+
+- PaddleOCR project: <https://github.com/PaddlePaddle/PaddleOCR>
+- PaddleOCR license: <https://github.com/PaddlePaddle/PaddleOCR/blob/main/LICENSE>
+- PaddleOCR model list: <https://github.com/PaddlePaddle/PaddleOCR/blob/main/docs/version3.x/model_list.md>
+- PaddleOCR ONNX conversion documentation: <https://paddlepaddle.github.io/PaddleOCR/latest/en/version3.x/inference_deployment/others/obtaining_onnx_models.html>
+- Official PP-OCRv6 small detection ONNX model card: <https://huggingface.co/PaddlePaddle/PP-OCRv6_small_det_onnx>
+- Official PP-OCRv6 small recognition ONNX model card: <https://huggingface.co/PaddlePaddle/PP-OCRv6_small_rec_onnx>
+- Official legacy text angle classification model list: <https://github.com/PaddlePaddle/PaddleOCR/blob/main/docs/version2.x/ppocr/model_list.en.md>
+
+The legacy `ch_ppocr_mobile_v2.0_cls` model predates the official Hugging Face
+model hosting and is identified through PaddleOCR's official model list and
+model download service.
+
+## 4. Applicable license
+
+The model artifacts in Section 6 are made available under the Apache License,
+Version 2.0 (`Apache-2.0`). The complete license text is available at
+<https://www.apache.org/licenses/LICENSE-2.0>.
+
+Subject to the conditions of Apache-2.0, the license permits use,
+reproduction, modification, preparation of derivative works, public display,
+sublicensing, and distribution in source or object form. These permissions are
+not restricted to non-commercial use.
+
+The license applies only to rights that the relevant licensors are authorized
+to grant. No additional model-specific restriction has been identified for the
+PaddleOCR-derived artifacts covered by this notice.
+
+## 5. Converted model artifacts
+
+RapidOCR converts or repackages upstream PaddleOCR inference models for use
+with supported inference engines. These conversions are mechanical
+transformations of the model representation. Conversion does not transfer
+ownership of the upstream weights to RapidOCR and does not remove the upstream
+copyright or attribution.
+
+RapidOCR distributes the converted artifacts in Section 6 under the same
+Apache-2.0 terms that apply to the corresponding upstream PaddleOCR models. The
+conversion and packaging scripts, configuration, and RapidOCR-authored
+metadata are separately copyrighted by the RapidOCR Authors and licensed under
+Apache-2.0 as part of the RapidOCR source code.
+
+A RapidOCR-converted artifact may not be byte-for-byte identical to an ONNX or
+other representation hosted by PaddlePaddle. Artifact identity must therefore
+be established using its source record and cryptographic hash rather than its
+filename alone.
+
+## 6. Bundled model artifacts
+
+The following artifacts are covered by this notice and are distributed with
+RapidOCR's default ONNX Runtime configuration:
+
+| RapidOCR artifact | Upstream model | SHA-256 | RapidOCR source |
+| --- | --- | --- | --- |
+| `PP-OCRv6_det_small.onnx` | `PP-OCRv6_small_det` | `090f04abcd9d9a7498bc4ebf677e4cb9bdce1fe4197ddb7e529f1ef44e1ff94f` | [ModelScope](https://www.modelscope.cn/models/RapidAI/RapidOCR/resolve/v3.9.2/onnx/PP-OCRv6/det/PP-OCRv6_det_small.onnx) |
+| `PP-OCRv6_rec_small.onnx` | `PP-OCRv6_small_rec` | `6f327246b50388f3c176ae304bd95767ea6dc0c9ae92153ef8cbe210b3c14884` | [ModelScope](https://www.modelscope.cn/models/RapidAI/RapidOCR/resolve/v3.9.2/onnx/PP-OCRv6/rec/PP-OCRv6_rec_small.onnx) |
+| `ch_ppocr_mobile_v2.0_cls_mobile.onnx` | `ch_ppocr_mobile_v2.0_cls` | `e47acedf663230f8863ff1ab0e64dd2d82b838fceb5957146dab185a89d6215c` | [ModelScope](https://www.modelscope.cn/models/RapidAI/RapidOCR/resolve/v3.9.2/onnx/PP-OCRv4/cls/ch_ppocr_mobile_v2.0_cls_mobile.onnx) |
+
+The model registry in `rapidocr/default_models.yaml` is the authoritative
+release record for the source URL and SHA-256 value of each supported model
+artifact.
+
+## 7. Redistribution requirements
+
+When redistributing a covered model artifact, or a modified or converted form
+of one, comply with Section 4 of Apache-2.0. In particular, you must:
+
+1. Give recipients a copy of the Apache License, Version 2.0.
+2. Cause modified files to carry prominent notices stating that you changed
+   them.
+3. Retain applicable copyright, patent, trademark, and attribution notices
+   from the upstream work, except notices that do not pertain to the
+   redistributed work.
+4. If an upstream distribution contains a `NOTICE` file, include the relevant
+   contents of that notice in a permitted form.
+
+At the time of publication, RapidOCR has not identified an additional
+model-specific `NOTICE` file for the artifacts listed in Section 6. If a future
+upstream release supplies one, its applicable contents must be retained.
+
+For converted files, an appropriate modification notice is:
+
+> Converted from an official PaddleOCR model to the indicated inference format
+> and packaged for use with RapidOCR. The upstream model weights are copyright
+> Baidu and/or the applicable PaddleOCR rights holders and are licensed under
+> the Apache License, Version 2.0.
+
+## 8. Trademarks and endorsement
+
+Apache-2.0 does not grant permission to use the trade names, trademarks,
+service marks, or product names of Baidu, PaddlePaddle, PaddleOCR, or RapidOCR,
+except as required for reasonable and customary description of the origin of
+the model artifacts. Redistribution must not imply endorsement, sponsorship,
+or affiliation without separate permission.
+
+## 9. Disclaimer
+
+Unless required by applicable law or agreed to in writing, the model artifacts
+are provided on an **AS IS** basis, without warranties or conditions of any
+kind. The warranty disclaimer and limitation of liability in Apache-2.0 apply.
+
+Model accuracy, fitness, security, and regulatory suitability remain the
+responsibility of the user and downstream distributor. RapidOCR is not a
+medical device, and neither the model license nor this notice represents a
+certification or guarantee for medical, safety-critical, or regulated use.
+
+## 10. Release maintenance
+
+When a RapidOCR release adds or changes a model artifact, maintainers should:
+
+1. Verify the upstream model and its applicable license.
+2. Record the upstream source and immutable version or revision where
+   available.
+3. Record the conversion tool, tool version, model format, and conversion
+   options where available.
+4. Record and verify the artifact SHA-256 value.
+5. Preserve any applicable upstream copyright, attribution, and `NOTICE`
+   material.
+6. Update this notice when the covered model families or applicable terms
+   change.

python/pyproject.toml

@@ -13,6 +13,7 @@ description = "Awesome OCR Library"
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.8,<4"
 license = "Apache-2.0"
+license-files = ["LICENSE", "MODEL_LICENSES.md"]
 authors = [
     { name = "SWHL", email = "liekkaskono@163.com" },
 ]