Determining Velocities by Propagation
Abstract
A velocity propagation technique is described that determines velocity vectors at the points of a contour, based on the velocities at the endpoints of the contour and the normal components of velocity along the contour. This technique can, at least, for simple motions, reliably determine motion vectors along image contours. Although the propagation procedure was implemented as a sequential procedure which traces out contours, it is important to note that the process is not inherently sequential and can be formulated as a parallel process operating on a network of image contours. The few examples contained in this paper all contained a single moving object. In more complex scenes, one must consider the problem of avoiding the propagation of motion vectors from one moving object to another. Also, the ability of the technique to deal with more general motions was not considered in this paper. All of these issues will be dealt with in subsequent reports.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1981
- Accession Number
- ADA124889
Entities
People
- Hanfang Sun
- Larry S. Davis
- Zhongquan Wu
Organizations
- University of Maryland