Disparity Analysis of Time-Varying Imagery.
Abstract
An interactive program (called program DIDA) was developed to perform disparity analysis of time-varying imagery. The program consists of four sections: (1) image operations; (2) interesting point selection; (3) interesting point matching, and (4) image display. Three data bases were obtained: (1) a 20-frame sequence of images from a terrain board of the U.S. Army Night Vision Laboratory; (2) and 18-frame sequence of various moving objects from the University of Minnesota; and (3) a 33-frame sequence of images of a traffic scene from the University of Hamburg. Each of the four program sections were tested. Image operations included printing image intensities, and image file creation and deletion. Three interest operators were employed in the interesting point selection section: (1) simple variance; (2) directed variance (the Moravec Operator); and (3) edged variance. The number of interesting points selected was found to be inversely proportional to the interest operator threshold. A relaxation-labeling matching algorithm was used in the interesting point matching section to match interesting points from two images. Very poor matching results were obtained. Image displays included black-and-white and color images with and without the interesting points overwritten. Photographs were taken of both cases. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1981
- Accession Number
- ADA127409
Entities
People
- Franklin D. Cooper Iii
Organizations
- Air Force Institute of Technology