http://imagej.273.s1.nabble.com/Motion-tracking-algorithm-tp3684268p3684274.html
> Hello
>
> There is some kind of web cams that tracks the moving object and making it
> into the focus of its vision field. So it tracks the body .
>
> I really do not understand what is the algorithm of image processing in
> these types. I know that for motion detection, I should subtract a frame
> from the previous, so I get a new image that contains only the moving
> object, but what is the case if the cam itself moves? How can it know that
> the centroid of the moving object is into its focus ??
>
> Actually I do want to make similar application using ordinary webcam based
> on 2 motors and external controller, but imagej will be the decider to say
> if the moving object is into focus or not.
>
>
> Can anyone help me regarding this?
>
> --
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