Physically Based Uid Ow Recovery from Image Sequences

This paper presents an approach to measuring uid ow from image sequences. The approach centers around a motion recovery algorithm that is based on principles from uid mechanics: The algorithm is constrained so that recovered ows observe conservation of mass as well as physically motivated boundary conditions. Results are presented from application of the algorithm to transmittance imagery of uid ows, where the uids contained a contrast medium. In these experiments , the algorithm recovered accurate and precise estimates of the ow. The signiicance of this work is twofold. First, from a theoretical point of view it is shown how information derived from the physical behavior of uids can be used to motivate a ow recovery algorithm. Second, from an applications point of view the developed algorithm can be used to augment the tools that are available for the measurement of uid dynamics; other imaged ows that observe compatible constraints might beneet in a similar fashion.