Tracking of unresolved targets in infrared imagery using a projection-based method

Jae-Ho Choi, Sarah A. Rajala, Petros Maragos
1992 Visual Communications and Image Processing '92  
The conventional two-dimensional Rough transform technique is generalized into a projection-based transform method by using the modified Radon transform for estimating a three-dimensional target tracks embedded in a time-sequential set of image frames. The targets of concern are dim, unresolved point targets moving along straight paths across a same field of view. Since the target signal-to-noise is low and the spatial extend of the target is less than a pixel, one must rely on integration over
more » ... on integration over a target track which span over many image frames. Instead of processing the entire 3-D data set, a set of projections are taken using the modified 3-D Radon transform. The projection frames are processed further to extract the track parameters using the Rough transform. This projection-based method not only lowers the data dimensionality but maintains a comparable estimation performance to that of using the entire 3-D data by successfully incorporating all available knowledge obtained from the set of projections. The simulation results are presented for the synthetic and real infrared image sequences containing synthetically generated 3-D target tracks under various signal-to-noise conditions. 166 ISPIE Vol. 1818 Visual Communications and Image Processing '92 O-8194-1018-7/92/$4.OO Downloaded From: http://proceedings.spiedigitallibrary.org/ on 05/27/2014 Terms of Use: http://spiedl.org/terms
doi:10.1117/12.131435 fatcat:gj25rngumjh5joigsa3p7ys4gq