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Two-dimensional matched filtering for motion estimation

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1 Author(s)
Milanfar, P. ; SRI Int., Menlo Park, CA, USA

In this work, we describe a frequency domain technique for the estimation of multiple superimposed motions in an image sequence. The least-squares optimum approach involves the computation of the three-dimensional (3-D) Fourier transform of the sequence, followed by the detection of one or more planes in this domain with high energy concentration. We present a more efficient algorithm, based on the properties of the Radon transform and the two-dimensional (2-D) fast Fourier transform, which can sacrifice little performance for significant computational savings. We accomplish the motion detection and estimation by designing appropriate matched filters. The performance is demonstrated on two image sequences

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Image Processing, IEEE Transactions on  (Volume:8 ,  Issue: 3 )