Build on Linux: missing opencv libs: optflow xfeatures2d xphoto

[KarlZeilhofer]

Hi,

I've problems on compiling ImagePlay on Linux Mint 18.3.

I've installed opencv according to this repository: https://github.com/jayrambhia/Install-OpenCV
(opencv_latest.sh).
It finished with success: OpenCV 3.4.1 ready to be used

Further more, I've tried to apply the patch for the Makefiles, described here: #100 (comment)
The library builds fine, but ImagePlay doesn't.

The final message is

g++ -m64 -Wl,-O1 -o ../_bin/Release/linux/imageplay ../intermediate/ImagePlay/Release/linux/stafx.h.o ../intermediate/ImagePlay/Release/linux/AboutWindow.o ../intermediate/ImagePlay/Release/linux/ConnectionDialog.o ../intermediate/ImagePlay/Release/linux/ImageViewerWindow.o ../intermediate/ImagePlay/Release/linux/IPApplication.o ../intermediate/ImagePlay/Release/linux/IPFilterLineEdit.o ../intermediate/ImagePlay/Release/linux/IPHistogramWidget.o ../intermediate/ImagePlay/Release/linux/IPImageViewer.o ../intermediate/ImagePlay/Release/linux/IPMorphologyCheckbox.o ../intermediate/ImagePlay/Release/linux/IPPluginManager.o ../intermediate/ImagePlay/Release/linux/IPProcessEdge.o ../intermediate/ImagePlay/Release/linux/IPProcessEdgeTmp.o ../intermediate/ImagePlay/Release/linux/IPProcessFactory.o ../intermediate/ImagePlay/Release/linux/IPProcessGrid.o ../intermediate/ImagePlay/Release/linux/IPProcessGridScene.o ../intermediate/ImagePlay/Release/linux/IPProcessInputOutputWidget.o ../intermediate/ImagePlay/Release/linux/IPProcessList.o ../intermediate/ImagePlay/Release/linux/IPProcessListTabWidget.o ../intermediate/ImagePlay/Release/linux/IPProcessMessageWidget.o ../intermediate/ImagePlay/Release/linux/IPProcessPropertiesWidget.o ../intermediate/ImagePlay/Release/linux/IPProcessScript.o ../intermediate/ImagePlay/Release/linux/IPProcessStep.o ../intermediate/ImagePlay/Release/linux/IPProcessThread.o ../intermediate/ImagePlay/Release/linux/IPZoomWidget.o ../intermediate/ImagePlay/Release/linux/main.o ../intermediate/ImagePlay/Release/linux/MainWindow.o ../intermediate/ImagePlay/Release/linux/PluginGenerator.o ../intermediate/ImagePlay/Release/linux/SettingsWindow.o ../intermediate/ImagePlay/Release/linux/TutorialDialog.o ../intermediate/ImagePlay/Release/linux/qrc_ressources.o ../intermediate/ImagePlay/Release/linux/moc_AboutWindow.o ../intermediate/ImagePlay/Release/linux/moc_ConnectionDialog.o ../intermediate/ImagePlay/Release/linux/moc_ImageViewerWindow.o ../intermediate/ImagePlay/Release/linux/moc_IPFilterLineEdit.o ../intermediate/ImagePlay/Release/linux/moc_IPHistogramThread.o ../intermediate/ImagePlay/Release/linux/moc_IPHistogramWidget.o ../intermediate/ImagePlay/Release/linux/moc_IPImageViewer.o ../intermediate/ImagePlay/Release/linux/moc_IPMorphologyCheckbox.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessGrid.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessGridScene.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessInputOutputWidget.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessList.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessListTabWidget.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessMessageWidget.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessPropertiesWidget.o ../intermediate/ImagePlay/Release/linux/moc_IPProcessThread.o ../intermediate/ImagePlay/Release/linux/moc_IPZoomWidget.o ../intermediate/ImagePlay/Release/linux/moc_MainWindow.o ../intermediate/ImagePlay/Release/linux/moc_PluginGenerator.o ../intermediate/ImagePlay/Release/linux/moc_SettingsWindow.o ../intermediate/ImagePlay/Release/linux/moc_TutorialDialog.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyBinaryMorphologyInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyBinaryMorphologyTristateInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyButtonBool.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyButtonInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyCheckbox.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyCheckboxInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyColorHSL.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyColorHSV.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyColorRGB.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyCombobox.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyFileOpen.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyFileSave.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyFolder.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyGrayscaleMorphologyInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyGroup.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyKernelInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyMatrixDouble.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyPoint.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyRadioInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertySliderDouble.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertySliderInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertySliderIntEven.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertySliderIntOdd.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertySpinnerInt.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyString.o ../intermediate/ImagePlay/Release/linux/moc_IPPropertyWidget.o   -L/usr/X11R6/lib64 -L../_bin/Release/linux/ -lIPL -lfreeimage -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_videoio -lopencv_calib3d -lopencv_optflow -lopencv_features2d -lopencv_xfeatures2d -lopencv_photo -lopencv_xphoto -ldl -lgomp -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread 
/usr/bin/ld: cannot find -lopencv_optflow
/usr/bin/ld: cannot find -lopencv_xfeatures2d
/usr/bin/ld: cannot find -lopencv_xphoto
collect2: error: ld returned 1 exit status
Makefile:373: recipe for target '../_bin/Release/linux/imageplay' failed
make: *** [../_bin/Release/linux/imageplay] Error 1

Where can I get the missing libs from, and how can I install them?

Greets, Karl

[emedinac]

I had a similar problem showed below. did you solve the problem?

/usr/bin/ld: cannot find -lopencv_optflow
collect2: error: ld returned 1 exit status

[KarlZeilhofer]

I'm sorry, no. I gave up on that issue.

[cedorman]

Several of the libraries that image play needs are in the 'contrib' part of OpenCV now. They changed the way that OpenCV works because of licensing and patents (SIFT, SURF, etc.); they moved all the potentially legal stuff to the contrib, so they can't be sued.

The way that I solved this was to build opencv locally and including the contrib libraries. The way to do this is to download an opencv version (I did 3.4.10) from the release ( ) and then download the corresponding opencv_contrib version (https://github.com/opencv/opencv_contrib/releases). Then, build it locally in the opencv directory:

• cd opencv_3.4.10/
• mkdir build
• cd build
• cmake -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-3.4.10/modules ..
• make
• sudo make install

The key is the -D part, which points at the contrib modules.

See additional instructions at: https://www.learnopencv.com/install-opencv-3-4-4-on-ubuntu-16-04/