About IWAMURA KEIICHI
About KANEDA KITAHIRO
About 日本印刷学会誌
About printed matter
About printing (graphic arts)
About information
About embedding
About visual recognition
About paper medium
About dress pattern
About data origination
About feature
About paper media
About information leakage
About obfuscation
About embedded coding
About Printing
About 印刷物
About 応用