Apparatus for picture processing

Details Apparatus for picture processing Apparatus for picture processing

1977-06-08

1979-01-09

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

340347DD, 358133, 358138, 358260, 360 8, 364515, H04N 140

Patent

active

041341341

ABSTRACT:
A Hadamard domain encoder wherein adding and subtracting operations on digitized intensities of 2 .times. 2 picture points yield secondary results. Likewise processing of groups of 2 .times. 2 secondary results yields further intermediate and/or final results. The complement of unprocessed secondary and final results fully characterizes the original picture but is better suited for data storage and/or transfer because the energy content of the picture is substantially restricted to a limited region. Redundancy in the stored/transmitted data is thus reduced.

REFERENCES:
patent: 3810019 (1974-05-01), Miller
patent: 4048658 (1977-09-01), Nakagawa
Wintz, "Picture Transform Coding," Proceedings of the IEEE, vol. 60, No. 7, Jul. 1972, pp. 809-820.

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