Progressive sub-band image coding system

Details Progressive sub-band image coding system Progressive sub-band image coding system

1988-07-22

1990-07-24

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, 358136, H04N 713

Patent

active

049438557

ABSTRACT:
A system for reducing image data redundancies through progressive sub-band coding. The image is separated into a selected plurality of sub-bands, and the sub-band with the largest non-redundant data content is chosen and used to predict the data in the other sub-bands. Only prediction error information of the predicted sub-bands encoded and transmitted together with the encoded chosen sub-band. An overall performance error signal can also be evaluated at the encoder's end and used to further improve performance. The sub-band encoding can be performed recursively to still further reduce the encoded data.

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IEEE Transactions on Communications, vol. COM-25, No. 11, Nov. 1977, "Adaptive Coding of Monochrome and Color Images," W. Chen et al., pp. 1285-1292.
The Bell System Technical Journal, vol. 55, No. 8 10/76, "Digital Coding of Speech in Sub-Bands", R. E. Crochiere et al., pp 1069-1085.
IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-34, No. 5, 10/86, "Subband Coding of Images", J. W. Woods et al., pp. 1278-1279.
SPIE vol. 707 Visual Communications and Image Processing, 1986, "Sub-Band Coding of Digital Images Using Two-Dimensional Quadrature Mirror Filtering", H. Gharavi et al., pp. 51-61.

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