Forums - How to use fcvTrackBMOpticalFlow16x16u8 ?

Hi, All, 

I am now trying the new API, fcvTrackBMOpticalFlow16x16u8.

It can runs without errors now, but there is no ouoput, numMv = 0.

Here is my code, 

Mat image1 = imread(fileName1, CV_LOAD_IMAGE_GRAYSCALE);    // opencv image datastructure
Mat image2 = imread(fileName2, CV_LOAD_IMAGE_GRAYSCALE);    // opencv image datastructure

size_t const blockLength = 16;

uint32_t numMv = 100;
uint32_t FASTCV_ALIGN128( locX[numBlocks] );
uint32_t FASTCV_ALIGN128( locY[numBlocks] );
uint32_t FASTCV_ALIGN128( mvX[numBlocks] );
uint32_t FASTCV_ALIGN128( mvY[numBlocks] );

fcvTrackBMOpticalFlow16x16u8(image1.data,	// src1
                             image2.data,	// src2
                             image1.size().width,	// srcWidth
                             image1.size().height,	// srcHeight
                             image1.size().width,	// srcStride
                             0, // roiLeft
                             image1.size().height-1, // roiTop
                             image1.size().width-1,	// roiRight
                             0,	// roiBottom
                             blockLength,	// shiftSize
                             blockLength/2,	// searchWidth
                             blockLength/2,	// searchHeight
                             blockLength/4,		// searchStep
                             false,	// usePrevious
                             &numMv,
                             locX,
                             locY,
                             mvX,
                             mvY);

Does anyone know where is the problem?

Thanks,

Kaku