Sub-band coding of images with low computational complexity

Details Sub-band coding of images with low computational complexity Sub-band coding of images with low computational complexity

1988-06-09

1989-05-09

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 12, 358133, 358141, 358260, 36472413, 36472416, 36472417, 382 41, 382 43, H04N 514, G06F 738

Patent

active

048293784

ABSTRACT:
A class of filters for use in connection with the sub-band coding of a video signal is disclosed. The filters are of short length, symmetric and have coefficients in the form of an integer divided by a power of two. The filters may be implemented with a minimum of circuitry and permit exact reconstruction of a sub-band coded video signal.

REFERENCES:
patent: 4674125 (1987-06-01), Carlson et al.
patent: 4785348 (1988-11-01), Fonsalas et al.
IEEE Trans. on Communications; "A Two-Channel Picture Coding System II-Adaptive Compounding and Color Coding"; Schreiber et al, vol. COM-29, No 12 Dec. 1981 pp. 1849-1858.
IEEE Trans. on ASSP; "Subband Coding of Images"; Woods et al, vol.-ASSP-34, No. 5, Oct. 1986 pp. 1278-1288.
IEEE Trans. on ASSP; "Exact Reconstruction Techniques for Tree-Structure Subband Codes"; Smith et al; vol.-ASSP-34 No. 3, Jun. 1986, pp. 434-441.

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