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Two-dimensional high-speed acoustic Fourier transform of optical images

Two-dimensional high-speed acoustic Fourier transform of optical images

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We employ a two-dimensional (2D) semiconductor acoustic convolver to generate the Fourier transform of 2D images. The transformed plane is raster-scanned along oblique lines with variable tilt angle, and the line time can vary from a few microseconds upwards.

References

    1. 1)
      • Gautier, H., Kino, G.S., Shaw, H.J.: `Acoustic transform techniques applied to optical imaging', Proceedings of the IEEE ultrasonics symposium, 1974, p. 99–103.
    2. 2)
      • P.G. Kornreich , S.T. Kowel , D.J. Fleming , N.T. Yang , A. Gupta , O. Lewis . DEFT: direct electronic Fourier transform of optical images. Proc. IEEE , 1072 - 1087
    3. 3)
      • H. Gautier , P. Ledu , C. Maerfeld . Two-dimensional acoustic scanning of optical images. Electron. Lett. , 186 - 187
    4. 4)
      • O.W. Otto . Real-time Fourier transform with a surface wave convolver. Electron. Lett. , 623 - 624
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