hassouna09's profile - activity

yes i know cv.CalcOpticalFlowBM() was removed from opencv 3.1 is why i back to 2.4 version but i need this fonction because i try to implement motion intensity from mpeg-7 visual descriptor and for this i need cv.CalcOpticalFlowBM() if this is not possible can you advice me i 'am trying to implement scene change detection algorithme in video should i go to histograme comparaison

Hi, sorry but i didn't understand where i mix the cv2 code ? I am using opencv2.4 and python 2.7 .

hello

i am trying to Implement the opticalflow algorithm with block matching cv.CalcOpticalFlowBM(), but when i run i have error

OpenCV Error: Sizes of input arguments do not match () in cvCalcOpticalFlowBM, file /home/travis/miniconda/conda-bld/work/opencv-2.4.11/modules/legacy/src/optflowbm.cpp, line 88 Traceback (most recent call last): File "/home/kaos/PycharmProjects/untitled/1616.py", line 56, in <module> optix = calcOpticalFlow(image,image2 ,'BlockMatching') File "/home/kaos/PycharmProjects/untitled/1616.py", line 44, in calcOpticalFlow 0, cv.fromarray( opticalFlowArrayX ), cv.fromarray( opticalFlowArrayY ) ) cv2.error

here is the code i try all day, but didn't find where is the problem thank's

` def calcOpticalFlow( image1, image2, method="BlockMatching" ):

    storageWidth = image1.shape[0]
    storageHeight = image1.shape[1]

    if method == "BlockMatching":
        opticalFlowArrayX = np.ndarray( ( storageHeight, storageWidth ), dtype=np.float32 )
        opticalFlowArrayY = np.ndarray( ( storageHeight, storageWidth ), dtype=np.float32 )
        cv.CalcOpticalFlowBM(cv.fromarray(image1),cv.fromarray(image2),
            (16,16),
              (5,5),
              (1,1),
            0, cv.fromarray( opticalFlowArrayX ), cv.fromarray( opticalFlowArrayY ) )

    return ( opticalFlowArrayX, opticalFlowArrayY )

image = cv2.imread('2.jpg',cv2.CV_LOAD_IMAGE_GRAYSCALE)

image2 = cv2.imread('3.jpg',cv2.CV_LOAD_IMAGE_GRAYSCALE)

optix,optiy = calcOpticalFlow(image,image2 ,'BlockMatching')`

hello

I am looking for a way to detect blood scene in video using opencv.

Which technique should i use to performe the detection ?

thank's