OpenCV 3 constants not recognized

[zj88]

I have latest version of OpenCV. I uncomment OPENCV_VERSION := 3 in Makefile.config and run make all. I get:

CXX src/caffe/layers/lstm_layer.cpp
src/caffe/layers/video_data_layer.cpp: In member function 'virtual void caffe::VideoDataLayer::DataLayerSetUp(const std::vector<caffe::Blob<Dtype>*>&, const std::vector<caffe::Blob<Dtype>*>&)':
src/caffe/layers/video_data_layer.cpp:92:30: error: 'CV_CAP_PROP_FRAME_COUNT' was not declared in this scope
total_frames_ = cap_.get(CV_CAP_PROP_FRAME_COUNT);
^~~~~~~~~~~~~~~~~~~~~~~
src/caffe/layers/video_data_layer.cpp:97:14: error: 'CV_CAP_PROP_POS_FRAMES' was not declared in this scope
cap_.set(CV_CAP_PROP_POS_FRAMES, 0);
^~~~~~~~~~~~~~~~~~~~~~
make: *** [.build_release/src/caffe/layers/video_data_layer.o] Error 1

Changing to cv::CAP_PROP_FRAME_COUNT fixes, but there are many other constants not recognized. Is Intel Caffe only working with OpenCV 2.4?

[chuanqi129]

We also support OpenCV3. What's your build method, make or cmake ? And what's your platform and env? could you try it again after you remove opencv and install it?

[ftian1]

We have no problem with OpenCV version being 3. maybe it's your env issue, such as forgetting to set INCLUDE_PATH/LD_LIBRARY_PATH. I would suggest you to use cmake build, which can automatically find corresponding opencv path as soon as you set right CMAKE_INCLUDE_PATH/CMAKE_LIBRARY_PATH.

so close it first.

[jw-redpanda]

CV_CAP_PROP_POS_FRAMES and CV_CAP_PROP_FRAME_COUNT are legacy C constant. Use the following instead (removing prefix CV_):
using namespace cv;
// CAP_PROP_POS_FRAMES
// CAP_PROP_FRAME_COUNT

[catmasteryip]

CV_CAP_PROP_POS_FRAMES and CV_CAP_PROP_FRAME_COUNT are legacy C constant. Use the following instead (removing prefix CV_):
using namespace cv;
// CAP_PROP_POS_FRAMES
// CAP_PROP_FRAME_COUNT

The problem persists