A Study on Watermarking for Ordered Dither Images Keeping the Image Quality

• KITAMURA Makoto

  Graduate School, Tokyo Polytechnic University

• ONO Fumitaka

  Graduate School, Tokyo Polytechnic University

Bibliographic Information

Other Title

• 組織的ディザ画像への画質を重視した透かし埋め込み方式の検討
• ソシキテキ ディザ ガゾウ エノ ガシツ オ ジュウシシタ スカシ ウメコミ ホウシキ ノ ケントウ

Abstract

A data hiding method for ordered dither images with keeping enough picture quality was proposed and studied for typical threshold ordering methods. The proposed method only embeds the data to flat patterns, which dominate the possible block patterns, and makes the image after embedding to be also flat patterns. This method has also the effect to prevent the data embedding on text area, which usually causes strong damage to the image quality. It is acknowledged that the embedded image by proposed method is better than one by conventional method in picture quality and in data compression ratio. By controlling the data embedding frequency, we succeeded to introduce the unnoticeable embedding rate for various images.

Journal

• The Journal of the Institute of Image Electronics Engineers of Japan

  The Journal of the Institute of Image Electronics Engineers of Japan 36 (1), 10-16, 2007

  The Institute of Image Electronics Engineers of Japan

Keywords

• Watermarking
• Ordered Dither
• Inverse Halftoning
• Image Evaluation

Details

• CRID: 1390001204610491776
• NII Article ID: 10018504740
• NII Book ID: AN00041650
• DOI: 10.11371/iieej.36.10
• ISSN: 13480316
• ISSN: 02859831
• NDL BIB ID: 8873468
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8873468
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed