Method of band compression

Details Method of band compression Method of band compression

1982-09-09

1984-09-04

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358135, H04N 712

Patent

active

044700725

ABSTRACT:
In a band compression method using an adaptive prediction system preferably applicable to facsimile transmission, a method of selecting picture elements to be referred (hereinafter defined as reference picture elements) for predicting an information value of a picture element wherein the reference picture elements are not selected uniformly and continuously from the neighborhood of the predicted picture element, but a group of picture elements (the first order picture elements) adjacent to the predicted picture element and further a group of picture elements of equal or higher order than the third order are selected as reference picture elements by excluding those shaded picture elements which lie on lines connecting the predicted picture element and the first order picture elements.

REFERENCES:
patent: 3937871 (1976-02-01), Robinson
patent: 4213154 (1980-07-01), Ono

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