Frequency separation of image data

Details Frequency separation of image data Frequency separation of image data

1996-02-08

1999-03-09

Moore, David K.

Image analysis

Image enhancement or restoration

Image filter

382265, G06K 940

Patent

active

058811796

ABSTRACT:
Apparatus for frequency-separating input image data, the apparatus comprises a data buffer; a multi-stage filter for performing successive spatial filtering operations on input image data, the multi-stage filter having:

REFERENCES:
patent: 5068911 (1991-11-01), Resnikoff et al.
patent: 5097331 (1992-03-01), Chen et al.
patent: 5359674 (1994-10-01), Van Der Wal
patent: 5583952 (1996-12-01), Resnikoff et al.
IEEE Journal On Selected Areas In Communications, vol. 7, No. 5, Jun. 1989, pp. 789/800 XP000036740 Darragh J C et al: "Fixed Distortion Subband Coding of Images for Packet-Switched Networks" *left-hand column, line 6--line 13: figure 4*.

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