The block diagram illustrating the different steps is shown in Figure 1. J. R. Bergen, P. Anandan, K. J. Hanna, and R. Hingorani. Heirarchical model based motion estimation . In Second European Conf. on Comp. This algorithm estimates the optical flow or motion field between the images using a gradient based approach.
Optical flow is the apparent motion of brightness patterns between images.
Heirarchical model based motion estimation . Afterwords, iteratively, the estimates are refined by decreasing oe w . J.R. Bergen, P. Anandan, K.J. Hanna and R. Hingorani. Heirarchical model-based motion estimation . In G. Sandini, editor, ECCV-92, Vol.