OpenCV Cuda calcOpticalFlowBM

Question

我想計算和顯示opticalFlowBM，但有嚴重的麻煩。我正在使用Cuda 7.5和OpenCV 3.0.0。 我試圖把它重寫到3.0.0。 Sizes of input arguments do not match in cvcalcopticalflowbm opencv 2.4.7 我的代碼（imgA和imgB從VideoCapture // cap.read(ImgA)讀Mats）：

  cvtColor(imgA,imgA,COLOR_BGR2GRAY); 
      cvtColor(imgB,imgB,COLOR_BGR2GRAY); 
      CvSize size = imgA.size(); 
      CvSize velsize = CvSize(size.width,size.height); 
      size.width/=BS; 
      size.height/=BS; 
      //result=Mat(size,IPL_DEPTH_8U); 
      //result=Scalar(255,255,255); 

      Mat velx,vely; 
      velx=Mat(velsize,IPL_DEPTH_32F); 
      vely=Mat(velsize,IPL_DEPTH_32F); 
      GpuMat imgAA; 
      imgAA.upload(imgA); 
      GpuMat imgBB; 

      cvtColor(imgAA,imgAA,COLOR_BGR2GRAY); 
      cvtColor(imgBB,imgBB,COLOR_BGR2GRAY); 
      imgBB.upload(imgB); 
      GpuMat velxx; 
      velxx.upload(velx); 
      GpuMat velyy; 
      velyy.upload(vely); 
      GpuMat buffor; 
      calcOpticalFlowBM(imgBB,imgAA,cvSize(BS,BS),cvSize(1,1),cvSize(1,1),0,velxx,velyy,buffor); 
      Mat abc(imgAA); 
      namedWindow("abc"); 
      imshow("abc",imgAA); 

但一直得到錯誤：

OpenCV Error: The function/feature is not implemented (You
should explicitly call download method for cuda::GpuMat object) in getMat,file
/home/pentaquark/Pulpit/opencv/opencv-3.0.0-
alpha/modules/core/src/matrix.cpp, line 1193 terminate called after throwing an instance of 'cv::Exception'what():
/home/pentaquark/Pulpit/opencv/opencv-3.0.0- alpha/modules/core/src/matrix.cpp:1193: error: (-213) You should explicitly call download method for cuda::GpuMat object in function getMat

誰能幫助我？

Answer 1

我不知道爲什麼我在幫你枝條這些c_q s_quing編輯downvoting聊天我就批判在這裏，但這裏的如UR B * TCH交易 說 你應該明確地調用下載方法對CUDA :: GpuMat對象

calcOpticalFlowBM（imgBB，imgAA，cvSize（BS，BS），cvSize（1,1），cvSize（1,1），0，velxx，velyy，buffor）; Mat abc（imgAA）;

要麼做： cv::Mat imgAA(abc); 或 cv::Mat imgAA; abc.download(imgAA);

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