Apparatus for the generation of a two-dimensional discrete fouri

Details Apparatus for the generation of a two-dimensional discrete fouri Apparatus for the generation of a two-dimensional discrete fouri

1975-02-10

1976-04-20

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

G06F 1534

Patent

active

039521869

ABSTRACT:
An apparatus for the generation of a two-dimensional discrete Fourier transform of an input signal developed from data within a data block, or field, having a size of N.sub.1 by N.sub.2 data points, N.sub.1 and N.sub.2 being relatively prime with respect to each other, the transforms being in a form suitable for subsequent electronic processing. The apparatus comprises an input scan apparatus connectable to the N.sub.1 by N.sub.2 two-dimensional data field comprising the input signal, such as a television viewing field. The apparatus receives and scans in proper order, or sequence, the N.sub.1 by N.sub.2 input data so that the subsequently generated one-dimensional Fourier transform of the length N.sub.1 N.sub.2 serial data string is identical to an N.sub.1 by N.sub.2 two-dimensional discrete Fourier transform of the N.sub.1 by N.sub.2 input data samples. A serial-access one-dimensional discrete Fourier transform (DFT) device, connected to the input scan generator, generates a one-dimensional discrete Fourier transform of the length N.sub.1 N.sub.2 serial data string.

REFERENCES:
patent: 3686490 (1972-08-01), Goldstone
patent: 3775602 (1973-11-01), Alexandridis et al.
P. E. Anuta, "Spatial Registration of Multispectral and Multitemporal Digl Imagery Using FFT Techniques," IEEE Trans. on Geoscience Electronics, Vol. GE-8, No. 4 Oct. 1970, pp. 353-368.

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