OpenCV Error: Assertion failed (u->refcount == 0 && "UMat deallocation error: some derived Mat is still alive") in deallocate, file /Users/ryuyamamoto/.julia/v0.5/OpenCV/deps/src/opencv-3.1.0/modules/core/src/ocl.cpp, line 4513
error in running finalizer: Cxx.CxxException{:N2cv9ExceptionE}(exception=0x00007fe858b27590)
OpenCV Error: Assertion failed (u->refcount == 0 && "UMat deallocation error: some derived Mat is still alive") in deallocate, file /Users/ryuyamamoto/.julia/v0.5/OpenCV/deps/src/opencv-3.1.0/modules/core/src/ocl.cpp, line 4513
error in running finalizer: Cxx.CxxException{:N2cv9ExceptionE}(exception=0x00007fe858c67b30)
OpenCV Error: Assertion failed (u->refcount == 0 && "UMat deallocation error: some derived Mat is still alive") in deallocate, file /Users/ryuyamamoto/.julia/v0.5/OpenCV/deps/src/opencv-3.1.0/modules/core/src/ocl.cpp, line 4513
error in running finalizer: Cxx.CxxException{:N2cv9ExceptionE}(exception=0x00007fe858a36600)
OpenCV Error: Assertion failed (u->refcount == 0 && "UMat deallocation error: some derived Mat is still alive") in deallocate, file /Users/ryuyamamoto/.julia/v0.5/OpenCV/deps/src/opencv-3.1.0/modules/core/src/ocl.cpp, line 4513
error in running finalizer: Cxx.CxxException{:N2cv9ExceptionE}(exception=0x00007fe858e231c0)