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[English](README.md) | 简体中文
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# PP-LiteSeg 量化模型 C++ 部署示例
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本目录下提供的 `infer.cc`,可以帮助用户快速完成 PP-LiteSeg 量化模型在 RV1126 上的部署推理加速。
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## 部署准备
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### FastDeploy 交叉编译环境准备
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1. 软硬件环境满足要求,以及交叉编译环境的准备,请参考:[FastDeploy 交叉编译环境准备](../../../../../../docs/cn/build_and_install/rv1126.md#交叉编译环境搭建)
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### 模型准备
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1. 用户可以直接使用由 FastDeploy 提供的量化模型进行部署。
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2. 用户可以使用 FastDeploy 提供的一键模型自动化压缩工具,自行进行模型量化, 并使用产出的量化模型进行部署.(注意: 推理量化后的分类模型仍然需要FP32模型文件夹下的 deploy.yaml 文件, 自行量化的模型文件夹内不包含此 yaml 文件, 用户从FP32模型文件夹下复制此yaml文件到量化后的模型文件夹内即可.)
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3. 模型需要异构计算,异构计算文件可以参考:[异构计算](./../../../../../../docs/cn/faq/heterogeneous_computing_on_timvx_npu.md),由于 FastDeploy 已经提供了模型,可以先测试我们提供的异构文件,验证精度是否符合要求。
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更多量化相关相关信息可查阅[模型量化](../../quantize/README.md)
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## 在 RV1126 上部署量化后的 PP-LiteSeg 分割模型
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请按照以下步骤完成在 RV1126 上部署 PP-LiteSeg 量化模型:
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1. 交叉编译编译 FastDeploy 库,具体请参考:[交叉编译 FastDeploy](../../../../../../docs/cn/build_and_install/rv1126.md#基于-paddlelite-的-fastdeploy-交叉编译库编译)
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2. 将编译后的库拷贝到当前目录,可使用如下命令:
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```bash
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cp -r FastDeploy/build/fastdeploy-timvx/ FastDeploy/examples/vision/segmentation/paddleseg/rv1126/cpp
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```
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3. 在当前路径下载部署所需的模型和示例图片:
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```bash
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mkdir models && mkdir images
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wget https://bj.bcebos.com/fastdeploy/models/rk1/ppliteseg.tar.gz
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tar -xvf ppliteseg.tar.gz
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cp -r ppliteseg models
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wget https://paddleseg.bj.bcebos.com/dygraph/demo/cityscapes_demo.png
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cp -r cityscapes_demo.png images
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```
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4. 编译部署示例,可使入如下命令:
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```bash
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mkdir build && cd build
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cmake -DCMAKE_TOOLCHAIN_FILE=${PWD}/../fastdeploy-timvx/toolchain.cmake -DFASTDEPLOY_INSTALL_DIR=${PWD}/../fastdeploy-timvx -DTARGET_ABI=armhf ..
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make -j8
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make install
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# 成功编译之后,会生成 install 文件夹,里面有一个运行 demo 和部署所需的库
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```
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5. 基于 adb 工具部署 PP-LiteSeg 分割模型到 Rockchip RV1126,可使用如下命令:
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```bash
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# 进入 install 目录
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cd FastDeploy/examples/vision/segmentation/paddleseg/rv1126/cpp/build/install/
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# 如下命令表示:bash run_with_adb.sh 需要运行的demo 模型路径 图片路径 设备的DEVICE_ID
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bash run_with_adb.sh infer_demo ppliteseg cityscapes_demo.png $DEVICE_ID
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```
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部署成功后运行结果如下:
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<img width="640" src="https://user-images.githubusercontent.com/30516196/205544166-9b2719ff-ed82-4908-b90a-095de47392e1.png">
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需要特别注意的是,在 RV1126 上部署的模型需要是量化后的模型,模型的量化请参考:[模型量化](../../../../../../docs/cn/quantize.md)
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