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docs: add mnn support to blog
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---
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title: Python版支持MNN推理
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date: 20260121
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authors: [SWHL]
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categories:
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- 模型相关
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comments: true
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hide:
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- toc
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draft: true
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---
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记录支持MNN推理的过程文档。
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<!-- more -->
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### 引言
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首先感谢[narc1ssus1](https://github.com/narc1ssus1)小伙伴的PR [#613](https://github.com/RapidAI/RapidOCR/pull/613)。有了这个PR,我这也有了着手来推动支持MNN作为推理引擎的动力。
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### 支持Det模型
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!!! note
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MNN部分主要参考官方文档:https://mnn-docs.readthedocs.io/en/latest/tools/convert.html
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#### 安装MNN
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```bash linenums="1"
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pip install MNN
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```
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#### 转换ONNX模型
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转换命令:
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```bash linenums="1"
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MNNConvert -f ONNX --modelFile rapidocr/models/ch_PP-OCRv4_det_infer.onnx --MNNModel mnn/ch_PP-OCRv4_det_infer.mnn --bizCode MNN
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```
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