the feature tracking step from a typical visual servoing algorithm. We do not need
correspondences of the features for deriving the control signal. This is achieved by modeling
the image features as a Mixture of Gaussians in the current as well as desired images. Using
Lyapunov theory, a control signal is derived to minimize a distance function between the two
Gaussian mixtures. The distance function is given in a closed form, and its gradient can be …