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what is the outputof this line step(opticalFlow,I1,I2) ?

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mena hamoum
mena hamoum on 13 May 2014
hi everyone i'm learning about motion estimation and i'm trying to detect the motion of cloud through optical flow between two sequential images of the sky. i want to use this line : [...] = step(opticalFlow,I1,I2) my question is : what i have to put instead of the points as output ?how many ?what kind of variable? i though to put [u ,v] put i get this error : ""Error using vision.OpticalFlow/step Too many input arguments; expected 1 (in addition to the object handle), got 2."" i hope that i've explained what i need well.

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