jetson安装opencv2

1) 先安装pip3
sudo apt install python3-pip

2) 避免RuntimeError: Running cythonize failed!

ModuleNotFoundError: No module named 'Cython'

需要安装 cython:   

pip3 install cython

3) 避免ModuleNotFoundError: No module named 'skbuild'

需要安装scikit-build  ：    

pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple scikit-build

4) 避免 Problem with the CMake installation, aborting build. CMake executable is cmake

需要安装pip

pip3 install pip -U

pip3 install cmake

5) 正式安装opencv-python:

pip3 install opencv-python

6） OPENBLAS_CORETYPE=ARMV8 python3

如果不执行OPENBLAS_CORETYPE=ARMV8 ，执行import cv2会异常终止

错误如下：  Illegal instruction (core dumped)

运行  python3

OPENBLAS_CORETYPE=ARMV8 python3

保存一张图片

import cv2
 
cap = cv2.VideoCapture(0)
 
ret, frame = cap.read()
 
cv2.imwrite("./fangjian2.jpeg", frame)
 
cap.release()