NDLI: Minimizing the embedding impact in steganography

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Embedding with syndrome coding based on BCH codes: The corrected version of this paper is now available as full text. To view the original document as presented in the printed proceedings (with its errors), download the supplemental file

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Minimizing the embedding impact in steganography

Content Provider	ACM Digital Library
Author	Fridrich, Jessica
Abstract	In this paper, we study the trade-off in steganography between the number of embedding changes and their amplitude. We assume that each element of the cover image is assigned a scalar value that measures the impact of making an embedding change at that pixel (e.g., the embedding distortion). Given the embedding impact profile of all pixels, we derive an analytic formula for the optimal number of pixels that should be used in combination with syndrome coding to minimize the overall embedding impact. We interpret the results and formulate several "rules of thumb" that should improve steganographic security. Contrary to what has been recommended in the literature before, our analysis implies that it is never optimal to only use the pixels with the smallest embedding impact. We also study q-ary embedding in the spatial domain and conclude that the smallest embedding impact is achieved for ternary schemes. This confirms some empirically derived facts previously published elsewhere.
Starting Page	2
Ending Page	10
Page Count	9
File Format	PDF
ISBN	1595934936
DOI	10.1145/1161366.1161369
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2006-09-26
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Steganography Steganalysis Perturbed quantization Distortion Syndrome coding Matrix embedding
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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