Linux下使用OpenCV打开笔记本摄像头

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})

编译过程：

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