Bidimensional FIR filter

Details Bidimensional FIR filter Bidimensional FIR filter

1993-08-25

1994-09-20

Mai, Tan V.

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36472416, G06F 1531

Patent

active

053495470

ABSTRACT:
A bidimensional Finite Impulse Response (FIR) filter of rank 2p+1 for processing data associates a "vertical" filter and a "horizontal" filter. Each filter comprises 2p+1 cells and circuitry for vertically scanning the data according to stripes having a height of p data; circuitry for simultaneously providing on a first line a datum of a stripe, on a second line a datum of the former stride shifted by p data, and on a third line, a datum of the still former stripe again shifted by p data; and circuitry for, at each clock time, connecting each cell input to one of the three lines.

REFERENCES:
patent: 4328426 (1982-05-01), D'Ortenzio
patent: 4821223 (1989-04-01), David
patent: 4941191 (1990-07-01), Miller et al.
Suresh et al "Exact Realisation of 2-Dimensional Digital Filters by Separable Filters", Electronics Letters 13th May 1976 vol. 12, No. 12, pp. 242-244.
IEEE Transactions on Circuits and Systems, vol. 26, No. 6, Jun. 1989, New York, US, pp. 813-820, Parhi et al., "Concurrent Architectures for Two-Dimensional Recursive Digital Filtering".
Patent Abstracts of Japan, vol. 10, No. 236 (E-435) Sep. 9, 1986 & JP-A-61088668 (NEC Home Electronics).

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