Green Theorems and Qualitative Properties of the Optical Flow
Author(s)Poggio, Tomaso; Verri, Allessandro; Torre, Vincent
MetadataShow full item record
How can one compute qualitative properties of the optical flow, such as expansion or rotation, in a way which is robust and invariant to the position of the focus of expansion or the center of rotation? We suggest a particularly simple algorithm, well-suited to VLSI implementations, that exploits well-known relations between the integral and differential properties of vector fields and their linear behaviour near singularities.