提问人：Daniel Bajo Collados 提问时间：11/16/2023 最后编辑：Abderrahmene Rayene MihoubDaniel Bajo Collados 更新时间：11/16/2023 访问量：20
对 cv：：aruco：：getPredefinedDictionary（cv：：aruco：:P redefinedDictionaryType） 的未定义引用
undefined reference to cv::aruco::getPredefinedDictionary(cv::aruco::PredefinedDictionaryType)
问：
我正在尝试在Qt中创建一个程序，该程序从TCP接收图像，然后在其中找到一个ArUco标记。
除了 ArUco 库之外，一切正常。一旦我添加了定义字典的简单行：
cv::aruco::Dictionary ArucoDic = cv::aruco::getPredefinedDictionary(cv::aruco::DICT_4X4_50);
我收到错误：
undefined reference to cv::aruco::getPredefinedDictionary(cv::aruco::PredefinedDictionaryType)
我发现的其他人可以通过在 .pro 文件中添加库来解决它，但我从一开始就按照以下教程这样做了：
完成所有这些之后，我的 .pro 文件如下所示：
QT -= gui
QT += network
QT += core
CONFIG += c++17 console
CONFIG -= app_bundle
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
server.cpp
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
HEADERS += \
server.h
INCLUDEPATH += D:/OpenCV/opencv/release/install/include
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_core480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_highgui480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_imgcodecs480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_imgproc480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_features2d480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_calib3d480
LIBS += -LD:/OpenCV/opencv/release/install/x64/mingw/lib -lopencv_aruco480
我真的不知道问题出在哪里，因为opencv_aruco480之前的所有库都可以正常工作。
我也知道Qt正在阅读ArUco库，因为它能够预测我正在编写的函数。它只是没有编译。
答：
0赞
Daniel Bajo Collados
11/21/2023
#1
通过添加objdetect.dll库解决了这个问题。 我还更改了 .pro 文件中引用所有库的方式。
win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_core480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_highgui480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_imgcodecs480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_imgproc480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_features2d480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_calib3d480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_aruco480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_dnn480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_flann480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_gapi480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_ml480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_objdetect480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_photo480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_stitching480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_video480.dll win32：LIBS += -L$$PWD/../../OpenCV/opencv/release/install/x64/mingw/lib/ -llibopencv_videoio480.dll
INCLUDEPATH += $$PWD/../../OpenCV/opencv/release/install/include DEPENDPATH += $$PWD/../../OpenCV/opencv/release/install/include
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