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Three-dimensional location estimation of trajectories of point targets using a projection-based transformation method
Optical Engineering (1995)
  • Jae-Ho Choi, Chonbuk National University
  • Sarah A. Rajala, North Carolina State University

A new computational approach for determining the parameters that characterize the locations of trajectories of point targets in a 3-D space is described. The targets of concern are dim, unresolved point targets moving along straight paths across the same field of view. Since the target's signal-to-noise ratio is low and the spatial extent of the target is less than a pixel, one must rely on integration over a target track that spans many image frames. The proposed method estimates these parameters by transforming the entire set of time-sequential images of a constant field of view into the projection space by using a modified Radon transform. Since the 3-D (spatiotemporal) data can be decomposed into 2-D multiple-view representations along arbitrary orientations, the Radon transform enables us to analyze the 3-D problem in terms of its 2-D projections. When this generalization of the Hough transform-based algorithm using the Radon transform is applied to a set of real infrared images, it produces promising estimation results even under noisy conditions. the noise in the images is assumed to be additive white Gaussian.

  • target motion detection/estimation,
  • Radon transform,
  • Hough transform,
  • Computer vision,
  • remote sensing
Publication Date
March, 1995
Publisher Statement
Copyright 1995 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Citation Information
Jae-Ho Choi and Sarah A. Rajala. "Three-dimensional location estimation of trajectories of point targets using a projection-based transformation method" Optical Engineering Vol. 34 Iss. 3 (1995)
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