Optic Flow Estimation by Adaptive Affine Transform

Optic flow is the velocity field in the image plane that arises due to the projection of moving points in the scene onto the image plane. The motion of points in the image plane may be due to the motion of the observer, the motion of objects in the scene, or both. Optic flow also represents the apparent motion due to the temporal rate of change of gray value structures. Figure 1 illustrates the distinction between real (fig. la) and apparent (fig. lb) motion.