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    # OpenCV turns on cuda acceleration in Nvidia Jetson platform。OpenCV在Nvidia Jetson平台開啟cuda加速 ###### tags: `OpenCV` `Nvidia` `Jetson` `Edge_AI` ` ![](https://i.imgur.com/S5QFcnE.png =800x) ## NVIDIA Jetson 平台部署相關筆記 ### 基本環境設定 - [Jetson AGX Xavier 系統環境設定1_在windows10環境連接與安裝](https://hackmd.io/@YungHuiHsu/HJ2lcU4Rj) - [Jetson AGX Xavier 系統環境設定2_Docker安裝或從源程式碼編譯](https://hackmd.io/k-lnDTxVQDWo_V13WEnfOg) - [NVIDIA Container Toolkit 安裝筆記](https://hackmd.io/wADvyemZRDOeEduJXA9X7g) - [Jetson 邊緣裝置查詢系統性能指令jtop](https://hackmd.io/VXXV3T5GRIKi6ap8SkR-tg) - [Jetson Network Setup 網路設定](https://hackmd.io/WiqAB7pLSpm2863N2ISGXQ) - [OpenCV turns on cuda acceleration in Nvidia Jetson platform<br>OpenCV在Nvidia Jetson平台開啟cuda加速](https://hackmd.io/6IloyiWMQ_qbIpIE_c_1GA) ### 模型部署與加速 - [[Deployment] AI模型部屬入門相關筆記](https://hackmd.io/G80HMJRmSwaaLD8W1PHUPg) - [[Object Detection_YOLO] YOLOv7 論文筆記](https://hackmd.io/xhLeIsoSToW0jL61QRWDcQ) - [Deploy YOLOv7 on Nvidia Jetson](https://hackmd.io/kZftj6AgQmWJsbXsswIwEQ) - [Convert PyTorch model to TensorRT for 3-8x speedup<br>將PyTorch模型轉換為TensorRT,實現3-8倍加速](https://hackmd.io/_oaJhYNqTvyL_h01X1Fdmw?both) - [Accelerate multi-streaming cameras with DeepStream and deploy custom (YOLO) models<br>使用DeepStream加速多串流攝影機並部署客製(YOLO)模型](https://hackmd.io/@YungHuiHsu/rJKx-tv4h) - [Use Deepstream python API to extract the model output tensor and customize model post-processing (e.g., YOLO-Pose)<br>使用Deepstream python API提取模型輸出張量並定製模型后處理(如:YOLO-Pose)](https://hackmd.io/@YungHuiHsu/rk41ISKY2) - [Model Quantization Note 模型量化筆記](https://hackmd.io/riYLcrp1RuKHpVI22oEAXA) --- ## Jetpack系統預設OpenCV未開啟CUDA加速 承接[Jetson AGX Xavier 系統環境設定1_在windows10環境連接與安裝](https://hackmd.io/@YungHuiHsu/HJ2lcU4Rj) 環境安裝好後,接下來進入程式編譯的部分 ### 檢視系統安裝的OpenCV相關套件 #### `jtop` 使用 jetson-stats 套件檢視系統狀態 ,在terminal輸入`jtop` 注意"OpenCV: 4.5.4 with CUDA: ==NO==",表示Jetpack預設安裝的OpenCV未開啟CUDA加速 ![](https://hackmd.io/_uploads/Bkj3fcVH2.png) #### `dpkg -l |grep -i opencv` ![](https://hackmd.io/_uploads/HyX6r5VS3.png) 可以看到系統中的OpenCV相關套件,其中`libopencv-python` 是python使用系統的opencv, 這個套件會跟`python-opencv`衝突,請避免自行透過`pip install opencv-python`安裝 - `libopencv-python` 與`python-opencv`差異如下 - `libopencv-python` - 這是一個 Python 的 OpenCV 綁定庫,提供了對 OpenCV 功能的訪問。它是通過 C++ 實現的 OpenCV 庫,並使用 ctypes 或其他技術將其與 Python 交互。因此,`libopencv-python` 提供了完整的 OpenCV 功能和性能,並與 Python 程序進行交互。您可以使用 pip 包管理器來安裝 libopencv-python。 - `python-opencv` - 這也是一個 Python 的 OpenCV 綁定庫,提供了對 OpenCV 功能的訪問。與 `libopencv-python` 不同,`python-opencv` 是通過使用 SWIG(Simplified Wrapper and Interface Generator)生成的綁定,將 C++ 的 OpenCV 功能封裝到 Python 中。它提供了與 `libopencv-python` 類似的功能,但可能有一些細微的差異和限制。您可以使用操作系統的軟件包管理器(如 apt)來安裝 `python-opencv`。 - `nvidia-opencv` - 為 NVIDIA 提供的針對自家 GPU 的優化版本。是基於原始的 OpenCV 庫進行了修改和優化,以充分利用 NVIDIA GPU 的計算能力和硬件加速功能,提高圖像處理和計算的性能,通常以庫文件或可執行文件的形式提供 - 在 Python 中無法直接導入和使用 `nvidia-opencv` ##### 進一步檢視`apt show libopencv-python` ``` Package: libopencv-python Version: 4.5.4-8-g3e4c170df4 Priority: optional Section: libs Maintainer: admin@opencv.org Installed-Size: 12.0 MB Provides: python-opencv Depends: libopencv (= 4.5.4-8-g3e4c170df4), libc6 (>= 2.17), libgcc-s1 (>= 3.0), libstdc++6 (>= 9) Conflicts: python-opencv Replaces: python-opencv Homepage: http://opencv.org Download-Size: 3,201 kB APT-Manual-Installed: yes APT-Sources: https://repo.download.nvidia.com/jetson/common r35.2/main arm64 Packages Description: Open Computer Vision Library Python bindings for Open Source Computer Vision Library ``` ## 從源碼建立支援CUDA加速的OpenCV 請參考 - [Compiling OpenCV from Source](https://developer.ridgerun.com/wiki/index.php/Compiling_OpenCV_from_Source) - [2023。mdegans/nano_build_opencv](https://github.com/mdegans/nano_build_opencv) ## 參考資料 - [Compiling OpenCV from Source](https://developer.ridgerun.com/wiki/index.php/Compiling_OpenCV_from_Source) - [2023。mdegans/nano_build_opencv](https://github.com/mdegans/nano_build_opencv) - 編譯好的`./build_opencv.sh`可以一鍵建立 - [2019/05mdegans。OpenCV build script](https://forums.developer.nvidia.com/t/opencv-build-script/74015/40) - [2022/11。穿山甲说了什么。小结 : 解决 NX 中 OpenCV“Compiled CUDA : NO”问题](https://zhuanlan.zhihu.com/p/580968763) - [2021/09。Hakureirm。Jetson Xavier NX OpenCV 安装 ](https://zhuanlan.zhihu.com/p/411901208)

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