Embedding the attribute information into a dithered image

✍ Scribed by Kiyoshi Tanaka; Yasuhiro Nakamura; Kineo Matsui Members

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 677 KB
• Volume: 21
• Category: Article
• ISSN: 0882-1666
• DOI: 10.1002/scj.4690210705

✦ Synopsis

Abstract

Attribute information is indispensable data in the collection and storage of a large amount of image information. If these data are stored together with the image, handling of the materials would become simpler and more reliable. This paper proposes a method to embed the attribute information into a dither image by using the difference of the threshold values of the dither matrix when a multilevel image is binarized. This method can embed the attribute information of about 2 kbytes (equivalent to about 25 percent of the data for the image) into a dithered image of 256 × 256 pixels. The embedded information can be displayed or printed separately at any time. This method can restore the dither image almost perfectly by using the property of the ordered dither method.