Picture data compressing method

Abstract

A method for compressing picture data, wherein an original picture is scanned photoelectrically to obtain analog picture signals which are converted in an analog-digital converter into picture data to be transmitted or stored in a memory, wherein each of a matrix of picture data having addresses is compared with an adjacent picture data in horizontal, vertical, right upper diagonal and left upper diagonal directions to obtain comparison results, and wherein either each picture data or its adjacent picture data is skipped according to the comparison results when the two picture data have the same value, to obtain compressed data consisting of representative data which cannot be skipped.

Dependencies are inferred from the claim text.