Image data processing apparatus, image data proces

专利名称：Image data processing apparatus, image

data processing method, and computerreadable medium

发明人：Jun Moroo,Tsugio Noda申请号：US10824528申请日：20040415

公开号：US20040234139A1公开日：20041125

专利附图：

摘要：To reduce the processing required to embed a code into image data anddecode the code. The present invention includes a block dividing section that divides

original image data into a plurality of blocks (M×N); an averaging section that extractseach average density (characteristic amount) in a plurality of blocks; and an encodingsection that embeds a code C (a plurality of bits) into a plurality of blocks by relating onecode (one bit out of the code C) to each pair of blocks mutually located in near positionin the plurality of blocks based on a magnitude relation of the average density.

申请人：FUJITSU LIMITED

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