© The Institution of Electrical Engineers
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.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19790124
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