A Study of the Digital Content Protection Mechanism Based on Minimal Embedding Impact

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簡歷

基本資料

Project title

Code/計畫編號

NSC100-2622-E412-003-CC3

Translated Name/計畫中文名

基於最小嵌入影響之數位內容保護技術的研究

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

洪維恩(計畫主持人)
鍾玉科

Department/Unit

Yu Da University of Science and Technology, Department and Graduate Institute of Information Management

Website

https://www.grb.gov.tw/search/planDetail?id=2312749

Year

2011

Start date/計畫起

01-06-2011

Expected Completion/計畫迄

31-05-2012

Co-Investigator(s)

Ming-Feng Yang

Bugetid/研究經費

279千元

ResearchField/研究領域

資訊科學--軟體

在本產學案中，我們擬提出了一個新的基於像素組置換 (pixel pair matching, PPM) 的資訊隱藏技術。 PPM 的基本做法是以一組像素值為座標，在此座標的neighborhood set 中找尋要嵌入之機密數字的座標，然後將像素組的值置換成所找到的座標。Exploiting Modification Direction (EMD) 與 Diamond Encoding (DE) 均是基於PPM 而發展出來技術，但EMD 的最大載量只有1.161 bpp。DE 雖然改進了 EMD 低載量的缺點，但其載量受限於參數k，因此無法針對指定的資料長度嵌入較佳的進位數。我們的方法不但解決了EMD 的方法中無法提高載量的問題，同時也可以嵌入任意進位的數字。初步實驗結果顯示，與DE相比，在低載量(k 1,2)時，我們的方法可得和DE相同的MSE，但在高載量(k  2) 時，我們的方法可得較小的MSE。若與著名的Optimal Pixel Adjustment Process (OPAP) 相比，無論嵌入幾個LSB，我們的方法所得的MSE 也低於OPAP 所得的MSE。本產學案將與麗文文化事業股份有限公司合作，並將所開發的嵌入技術，用於麗文所發行的數位出版品中。This project proposes a new data hiding method based on pixel pair matching (PPM). The basic idea of PPM is to use the values of pixel pair as a reference coordinate, and search a coordinate in the neighborhood set of this pixel pair according to the given message digits. The pixel pair is then replaced by the searched coordinate to conceal a message digit. Exploiting modification direction (EMD) and diamond encoding (DE) are two data hiding methods proposed recently based on PPM. The maximum capacity of EMD is 1.161 bpp of which DE extends the payload by embedding digits in a larger notational system. The proposed method offers lower MSE than DE when k  2 by providing more compact neighborhood sets and allowing embedded digits in any notational system. Compared with optimal pixel adjustment process (OPAP) method, the proposed method always has lower MSE for various payloads. The proposed project will corporate with The LiWen Publishing Group, and the developed embedding method is expected to be used in LiWen’s digital publication products.

Keyword(s)

Exploiting Modification Direction (EMD)
Diamond Encoding (DE)
Optimal Pixel Adjustment Process (OPAP)

DSpace CRIS

A Study of the Digital Content Protection Mechanism Based on Minimal Embedding Impact

基本資料

Description