Forums - How to use "fcvTrackLKOpticalFlowu8" method?

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How to use "fcvTrackLKOpticalFlowu8" method?
Min Woo_Park
Join Date: 23 Oct 11
Posts: 4
Posted: Thu, 2011-12-22 22:35

I want to track extracted features. 

So, i want to match. 

I was selected "fcvTrackLKOpticalFlowu8". 

but, i don't know how to use. 

Could you help me? And. How to use "fcvdescriptorcreate" merhod? What is patch? How make it?

The below code is a part of my code. 


fcvPyramidLevel* frmPyramid1 = (fcvPyramidLevel*)fcvMemAlloc(state.scaledImgWidth/2 * state.scaledImgHeight/2, 16 );

 fcvPyramidLevel* frmPyramid2= (fcvPyramidLevel*)fcvMemAlloc(state.scaledImgWidth/2 * state.scaledImgHeight/2, 16 );

fcvPyramidCreateu8(state.prevImage, state.blurredImgWidth, state.blurredImgHeight, 2, frmPyramid1 );

  fcvPyramidCreateu8(dataBuf, state.blurredImgWidth, state.blurredImgHeight, 2, frmPyramid2 );


 fcvPyramidLevel* dxPyramid= (fcvPyramidLevel*)fcvMemAlloc(state.scaledImgWidth/2 * state.scaledImgHeight/2, 16 );

 fcvPyramidLevel* dyPyramid= (fcvPyramidLevel*)fcvMemAlloc(state.scaledImgWidth/2 * state.scaledImgHeight/2, 16 );

 fcvPyramidSobelGradientCreatei8(frmPyramid1, dxPyramid, dyPyramid, 2);


 fcvTrackLKOpticalFlowu8(state.prevImage, state.blurredImgBuf, state.blurredImgWidth, state.blurredImgHeight, frmPyramid1, frmPyramid2, dxPyramid, dyPyramid, (float*)state.prevCorners, (float*)state.corners, state.featureStatus, state.numPrevCorners, 7, 7, 7, 2, 2.0, 0.15, 0, 1);

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Join Date: 26 Oct 11
Posts: 23
Posted: Tue, 2011-12-27 15:06

This is a code snipet that shows how to use fcvTrackLKOpticalFlowu8 function: 




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Join Date: 3 Jul 13
Posts: 3
Posted: Mon, 2013-08-05 04:08

Is there any other answers?I also want to know its answer,thx   :) 

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