If you are planning to use VideoCapture class, first you should make sure opencv can recognize your camera. It is best to start with Open CV for python on raspberry pi, try to create a VideoCapture object and see if it can grab frames from your camera. If it can, then you should be able to use Emgu CV's VideoCapture class to grab frames from camera too. If not, you should find a camera that works with Open CV's VideoCapture class in python on raspberry pi.
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Try with GetUMat: using (UMat uModelImage = modelImage.GetUMat(AccessType.Read)) using (UMat uObservedImage = observedImage.GetUMat(AccessType.Read))
next: drop DISABLE_OPENCV_24_COMPATIBILITY
next: version.hpp
next: OPENCV_ABI_COMPATIBILITY
next: force C++11 features unconditionally: CV_CXX_MOVE_SEMANTICS/CV_CXX_STD_ARRAY
next: drop CV_CXX11 conditions
next(ml): eliminate dummy interface class ANN_MLP_ANNEAL
cmake: require C++11 and CMake 3.5.1+
next(calib3d): eliminate CirclesGridFinderParameters2
cmake: add compilation test for VTK
android: enable C++11 in test sample
next(android): java3 -> java4
next(core): use C++11 classes for cv::Mutex/cv::AutoLock
next: drop WITH_CSTRIPES
Merge pull request #11256 from alalek:prepare_next
next: drop HAVE_TEGRA_OPTIMIZATION/TADP
fix CUDA build crash
Merge pull request #11292 from tomoaki0705:fixCUDABuild40
Update the function rectangle
Merge pull request #11286 from sturkmen72:update_rectangle
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
ml: refactor non-virtual methods
Merge pull request #11384 from berak:ml_virtual
core: drop cv::errorNoReturn()
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge pull request #11392 from alalek:master_drop_errorNoReturn
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge pull request #11516 from berak:java_features2d
features2d: remove deprecated java wrappers
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
videoio: add rudimentary librealsense 1.x support
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
Merge pull request #11669 from csukuangfj:fix-11668
fix #11668.
Viz3d::getViewerPose() made const
Merge pull request #11643 from savuor:fix/viz_const
Merge remote-tracking branch 'upstream/3.4' into merge-3.4