Question

我制作了自己的使用Opencv和其他库的库。这是

CMakelists.txt of my library:

cmake_minimum_required(VERSION 3.0)

project("face_module")

add_definitions("-std=c++11" "-Wno-write-strings")

file(GLOB_RECURSE SOURCES "*.cpp"")
file(GLOB_RECURSE HEADERS "*.h"")
add_library("face_module" SHARED ${SOURCES} ${HEADERS})
target_include_directories(
    "face_module" PUBLIC "include" )

find_package(OpenCV 3.2.0 REQUIRED)
find_package(jsoncpp REQUIRED)

set( JSONCPP_LIBRARIES    jsoncpp curl )
SET(OpenCV_LIBS  opencv_core opencv_highgui opencv_videoio opencv_imgproc opencv_imgcodecs )

target_link_libraries("face_module"
    "${CMAKE_CURRENT_LIST_DIR}/lib/tensorflow/libtensorflow.so"
    "${CMAKE_CURRENT_LIST_DIR}/lib/tensorflow/libtensorflow_framework.so"
    ${OpenCV_LIBS}
    ${JSONCPP_LIBRARIES}
    pthread)

我在程序中同时使用该库和Opencv：

cmake_minimum_required(VERSION 3.0)

project("database_generator")

add_definitions("-std=c++11" )

file(GLOB SOURCES  "database_generator.cpp")
file(GLOB HEADERS "")

add_executable("database_generator" ${SOURCES} ${HEADERS})
target_link_libraries("database_generator"
 "face_module")

当我在我的database_generator项目中使用OpenCV VideoCapture时，网络摄像头使我图像变黑。我不明白为什么会这样。正如您在database_generator的CmakeLists.txt中看到的那样，我没有添加Opencv库，因为它也在我的face_module库中添加了。

在我的图书馆世代中我做了什么不好的事情？

这是我的database_generator的主文件

int main(int argc, char **argv) {
    cv::VideoCapture *video_capture = new cv::VideoCapture(0);

    if (!video_capture->isOpened()) {
        std::cerr << "Can't open camera " << 0 << std::endl;
    }

    while(1) {
        cv::Mat u8x3_image;

        *video_capture >> u8x3_image;
        std::cout << "lalal"<< u8x3_image.empty() << std::endl;
        cv::imshow("facedetector", u8x3_image);
        cv::waitKey(100);
    }
}

使用前面的代码，相机会向我发送正常图像，但是，当我使用我的类库时，网络摄像头发送的图像是黑色...

编辑：我还尝试在我的库中做所有事情，只是生成一个可执行文件（没有库）

project("database_generator2")

add_definitions("-std=c++11" )

file(GLOB_RECURSE SOURCES "*.cpp"  "../module/database_generator.cpp")
file(GLOB_RECURSE HEADERS "*.h" )
add_executable("database_generator2" ${SOURCES} ${HEADERS})
target_include_directories(  "database_generator2" PUBLIC "include" )

find_package(OpenCV 3.2.0 REQUIRED)
find_package(jsoncpp REQUIRED)

set( JSONCPP_LIBRARIES    jsoncpp curl )
SET(OpenCV_LIBS  opencv_core opencv_highgui opencv_videoio opencv_imgproc opencv_imgcodecs )

target_link_libraries("database_generator2"
    "${CMAKE_CURRENT_LIST_DIR}/lib/tensorflow/libtensorflow.so"
    "${CMAKE_CURRENT_LIST_DIR}/lib/tensorflow/libtensorflow_framework.so"
    ${OpenCV_LIBS}
    ${JSONCPP_LIBRARIES}
    pthread)

我也有同样的麻烦，所以问题不是由于库的产生。我认为它来自Tensoflow库libtensorflow_framework.so libtensorflow.so，但我不明白为什么。

    libtensorflow_framework.so:
    linux-vdso.so.1 =>  (0x00007fff575d2000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f7afda2b000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7afd722000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7afd505000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7afd183000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7afcf6d000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7afcba3000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f7afe7f9000)
libtensorflow.so:
    linux-vdso.so.1 =>  (0x00007ffc32ba1000)
    libtensorflow_framework.so => /home/xavier/Desktop/developpement/Network/pam_face_module/library/lib/tensorflow/./libtensorflow_framework.so (0x00007f0bc5a55000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f0bc5851000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0bc5634000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f0bc532b000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f0bc4fa9000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f0bc4d93000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0bc49c9000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f0bc9233000)

这真的很奇怪，因为opencv的读取功能正常工作，但是VideoCapture给我发送了黑色图像：（

Edit2：太疯狂了，事实上，一旦我使用tensorlow对象，VideoCapture就会向我发送黑色图像...这可能来自tensorflow库编译吗？

Answer 1

如果您使用的库未正确链接，您甚至都不会获得可执行文件。

这应该有帮助

http://answers.opencv.org/question/129659/i-want-to-read-image-captured-by-webcam-videocapture-and-write-that-to-some-external-file/

如何将图书馆整合到我的图书馆中

1 个答案: