新建test文件夾，文件夾存在test.cpp和CMakeLists.txttest.cpp#include

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#include

#include

#include

#include

#include

using namespace cv;

using namespace std;

const char* keys =

{

"{help h usage ? | | print this message}"

"{@video | | Video file,if not defined try to use webcamera}"

};

int main(int argc,const char** argv)

{

CommandLineParser parser(argc,argv,keys);

parser.about("Reading a video and camera v1.0.0");

if (parser.has("help"))

{

parser.printMessage();

return 0;

}

String videoFile = parser.get(0);

if (!parser.check())

{

parser.printErrors();

return 0;

}

VideoCapture cap;

if (videoFile != "")

{

cap.open(videoFile);// read a video file

}else {

cap.open(0);// read the default caera

}

if (!cap.isOpened())// check if we succeeded

{

return -1;

}

namedWindow("Video",1);

while (1)

{

Mat frame;

cap >> frame; // get a new frame from camera

imshow("Video",frame);

if (waitKey(30) >= 0) break;

}

// Release the camera or video file

cap.release();

return 0;

}

CMakeLists.txt

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project(test)

cmake_minimum_required(VERSION 2.8.7)

# option to enable OpenMP; only relevant for the kcf version with the

# VOT scale estimation

option(WITH_OPENMP "Enable OpenMP" OFF)

if(WITH_OPENMP)

find_package(OpenMP required)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")

endif(WITH_OPENMP)

# add c++11 support

if(CMAKE_COMPILER_IS_GNUCC)

ADD_DEFINITIONS ( -std=c++11 )

endif(CMAKE_COMPILER_IS_GNUCC)

# add OpenCV

set(OPENCV_DIR_HINT "")

if(WIN32)

get_filename_component(OPENCV_DIR_PLATFORM $ENV{OPENCV_DIR} DIRECTORY)

get_filename_component(OPENCV_DIR_HINT ${OPENCV_DIR_PLATFORM} DIRECTORY)

endif(WIN32)

set(OpenCV_STATIC OFF)

find_package(OpenCV required HINTS ${OPENCV_DIR_HINT})

編譯過(guò)程：

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> cd test

> g++ test.cpp -o test `pkg-config --cflags --libs opencv`

> ./test

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