Ubuntu20.04编译安装opencv4.0.0和opencv_contrib4.0.0

下载opencv-4.0.0.zip和opencv_contrib-4.0.0.zip

https://download.csdn.net/download/wanchengkai/86947474

终端输入

apt update

apt install -y cmake g++ unzip//安装cmake,g++,unzip

然后解压opencv-4.0.0.zip，opencv_contrib-4.0.0.zip

unzip opencv-4.0.0.zip

unzip opencv_contrib-4.0.0.zip

进入目录

cd opencv-4.0.0

mkdir build

cd build

在build路径下cmake

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules ..

当显示Configuring done

Generating done后

开始编译：

make

这是因为一些文件没有下载下来，不只此处的boostdesc_bgm.i，还有

boostdesc_bgm_bi.i

boostdesc_bgm_hd.i

boostdesc_binboost_064.i

boostdesc_binboost_128.i

boostdesc_binboost_256.i

vgg_generated_120.i

vgg_generated_64.i

vgg_generated_80.i

vgg_generated_48.i

解决办法：下载缺失的文件，拷贝到\opencv_contrib-4.0.0\modules\xfeatures2d\src目录中

再编译make

将opencv/modules/features2d/test/文件下的

test_descriptors_invariance.impl.hpp

test_descriptors_regression.impl.hpp

test_detectors_invariance.impl.hpp

test_detectors_regression.impl.hpp

test_invariance_utils.hpp

拷贝到opencv_contrib-4.0.0/modules/xfeatures2d/test/文件下。

将opencv_contrib-4.0.0/modules/xfeatures2d/test/test_features2d.cpp文件下的

#include "features2d/test/test_detectors_regression.impl.hpp"

#include "features2d/test/test_descriptors_regression.impl.hpp"

改成：

#include "test_detectors_regression.impl.hpp"

#include "test_descriptors_regression.impl.hpp"

将opencv_contrib-4.0.0/modules/xfeatures2d/test/test_rotation_and_scale_invariance.cpp文件下的

#include "features2d/test/test_detectors_invariance.impl.hpp"

#include "features2d/test/test_descriptors_invariance.impl.hpp"

改成：

#include "test_detectors_invariance.impl.hpp"

#include "test_descriptors_invariance.impl.hpp"

再次编译

make   ---》OK

make install

Opencv被安装到/usr/local目录下，

安装之前的/usr/local目录内容：