OS：官方固件 Xubuntu 16.04

1 Install

1.1) Required Packages

compiler ✓

$ sudo apt-get install build-essential

required ✓

$ sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

optional ✓

$ sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

1.2) Getting OpenCV Source Code

$ git clone https://github.com/opencv/opencv.git
$ cd opencv/
$ git checkout 3.2.0

If use extra modules:

$ git clone https://github.com/opencv/opencv_contrib.git
$ cd opencv_contrib/
$ git checkout 3.2.0

1.3) Building OpenCV from Source

$ cd opencv/
$ mkdir build
$ cd build/

export PY_NAME=(python -c 'from sys import version_info as v; print("python%d.%d" % v[:2])')
export PY_NUMPY_DIR=(python -c 'import os.path, numpy.core; print(os.path.dirname(numpy.core.file))')

$ cmake -DCMAKE_BUILD_TYPE=RELEASE
-DCMAKE_INSTALL_PREFIX=/usr/local
-DPYTHON2_EXECUTABLE=$(which python)
-DPYTHON_INCLUDE_DIR=/usr/include/$PY_NAME
-DPYTHON_INCLUDE_DIR2=/usr/include/aarch64-linux-gnu/$PY_NAME
-DPYTHON_LIBRARY=/usr/lib/aarch64-linux-gnu/lib$PY_NAME.so
-DPYTHON2_NUMPY_INCLUDE_DIRS=/usr/lib/$PY_NAME/dist-packages/numpy/core/include/
-DBUILD_DOCS=OFF
-DBUILD_EXAMPLES=OFF
-DBUILD_TESTS=OFF
-DBUILD_PERF_TESTS=OFF
-DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules
..

make -j(nproc --all)
$ sudo make install

2 Examples

2.1) Canny Edge Detection

canny.py:

#!/usr/bin/env python

import cv2
import numpy as np

def main():
img = cv2.imread('../data/messi5.jpg', 0)
edges = cv2.Canny(img, 100, 200)

cv2.imshow('Original & Edge', np.vstack((img, edges)))
cv2.waitKey()
cv2.destroyAllWindows()

if name == 'main':
main()

3 Appendix

3.1) Install pip

$ python --version
Python 2.7.12

$ curl -O https://bootstrap.pypa.io/get-pip.py
$ python get-pip.py

$ vi ~/.pip/pip.conf
[global]
format=columns
index-url=http://mirrors.aliyun.com/pypi/simple/
[install]
trusted-host=mirrors.aliyun.com

原作者：eevee