The centre position of hand’s contour is obtained by doing
ellipse fitting technique and obtains the centre of ellipse’s
coordinate position. Ellipse fitting technique is done by
approximation with least square method within distribution of
points obtained which are representation of hand object in
grayscale image. To create ellipse, cvFitEllipse function in
OpenCV is used. cvFitEllipse function was developed based
on ellipse fitting method developed by Andrew Fitzgibbon in
1999 [7]. Figure 9 shows the ellipse and coordinate position of
hand’s centre estimated which are generated from this
algorithm.