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CMake配置带GPU加速的OpenCV时无法识别Python3组件

编译带GPU加速的OpenCV时CMake无法识别Python3组件问题

我严格按照教程步骤尝试通过CMake在笔记本上编译安装带GPU加速的OpenCV,但CMake始终无法识别Python3的相关组件(包括解释器、库、numpy及安装路径),已尝试重新安装所有必要软件及其他解决方案,均未奏效。

操作步骤

  • 安装anaconda、cmake、VS 2019 16版、CUDA及cuDNN;
  • 从GitHub下载opencv-4.8.0及opencv_contrib-4.8.0;
  • 在包含上述两个文件夹的opencv_gpu目录内创建build文件夹;
  • 在CMake中配置,指定opencv-4.8.0为源码,VS 2019 16版为生成器;
  • 勾选WITH_CUDA、OPENCV_DNN_CUDA、ENABLE_FAST_MATH参数,并设置OPENCV_EXTRA_MODULES_PATH为D:\opencv_gpu\opencv_contrib-4.8.0\modules;
  • 重新配置后勾选CUDA_FAST_MATH,将CMAKE_CONFIGURATION_TYPES设置为仅Release,CUDA_ARCH_BIN设置为8.6(我的GPU为NVIDIA RTX 3050,计算能力为8.6);
  • 执行Configure→Generate;
  • 运行命令cmake --build "D:\opencv_gpu\build" --target INSTALL --config Release;
  • 完成操作。

配置时的警告信息

每次配置都会出现以下警告,我认为是后续错误的诱因:

Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules
are removed.  Run "cmake --help-policy CMP0148" for policy details.  Use
the cmake_policy command to set the policy and suppress this warning.

Call Stack (most recent call first):
  cmake/OpenCVDetectPython.cmake:64 (find_host_package)
  cmake/OpenCVDetectPython.cmake:280 (find_python)
  CMakeLists.txt:649 (include)
This warning is for project developers.  Use -Wno-dev to suppress it.

最终错误现象

操作完成后,尝试导入cv2时出现如下错误:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cv2'

配置输出对比

预期输出(含Python3相关信息)

.
.
.
--  OpenCl:                         YES(NVD3D11)
--    Include path:                 D:/opencv_gpu/opencv-4.8.0/3rdparty/i
--    Link libraries:               Dynamic load

--   Python 3:
--     Interpreter:                 D:/anaconda3/python.exe (ver 3.10.9)
--     Libraries:                   {path to directory}
--     numpy:                       {path to directory}
--     packages path:               {path to directory}

--  Python (for build):             D:/anaconda3/python.exe
.
.
.

实际输出(缺少Python3相关内容)

.
.
.
--  OpenCl:                         YES(NVD3D11)
--    Include path:                 D:/opencv_gpu/opencv-4.8.0/3rdparty/i
--    Link libraries:               Dynamic load

--  Python (for build):             D:/anaconda3/python.exe
.
.
.

补充信息

  • CUDA安装验证:执行nvcc -V输出如下:
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2021 NVIDIA Corporation
Built on Wed_Jul_14_19:47:52_Pacific_Daylight_Time_2021
Cuda compilation tools, release 11.4, V11.4.100
Build cuda_11.4.r11.4/compiler.30188945_0
  • numpy版本:执行pip install --upgrade numpy后显示已安装最新版本:
Requirement already satisfied: numpy in d:\anaconda3\lib\site-packages (1.25.1)

内容的提问来源于stack exchange,提问作者Dylan Mac

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最近更新时间:2026.07.16 02:05:33