Estimation of multiple 2D uniform motions by sensor array processing techniques

Hamid K. Aghajan; Babak H. Khalaj; Thomas Kailath

doi:10.1117/12.171093

23 March 1994 Estimation of multiple 2D uniform motions by sensor array processing techniques

Hamid K. Aghajan, Babak H. Khalaj, Thomas Kailath

Proceedings Volume 2182, Image and Video Processing II; (1994) https://doi.org/10.1117/12.171093
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

A technique is proposed for estimating the parameters of 2D uniform motion of multiple moving objects in a scene, based on long-sequence image processing and the application of a recently developed multi-line fitting algorithm. Plots of the vertical and horizontal projections versus frame number give new images in which uniformly moving objects are represented by skewed band regions, with the angles of the skew from the vertical being a measure of the velocities of the moving objects. For example, vertical bands will correspond to objects with zero velocity. A recently developed algorithm called SLIDE (subspace-based line detection) can be used to efficiently determine the skew angles. SLIDE exploits the temporal coherence between the contributions of each of the moving patterns in the frame projections to enhance and distinguish a signal subspace that is defined by the desired motion parameters. A similar procedure can be used to determine the vertical velocities. Some further steps must then be taken to properly associate the horizontal and vertical velocities.

Citation Download Citation

Hamid K. Aghajan, Babak H. Khalaj, and Thomas Kailath "Estimation of multiple 2D uniform motions by sensor array processing techniques", Proc. SPIE 2182, Image and Video Processing II, (23 March 1994); https://doi.org/10.1117/12.171093

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