Non-uniform quantization in breaking HUGO

Licong Chen, Yun Q. Shi, Patchara Sutthiwan, Xinxin Niu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


In breaking HUGO (Highly Undetectable Stegonagraphy), an advanced steganographic scheme recently developed for uncompressed images, the research on steganalysis has made rapid progress recently. That is, more advanced statistical models often utilizing high dimensional features have been adopted. It is noted that there is one thing in common for all of these newly developed advanced steganalytic schemes. That is, uniform quantization has been applied to residual images in order to reduce the feature dimensionality. In this paper, non-uniform quantization is proposed, developed and utilized to break the HUGO. In constructing non-uniform quantizers, a small portion of available samples from both cover and stego images are utilized to provide needed statistics. Utilizing non-uniform quantization we can achieve better steganalytic performance than using uniform quantization under, otherwise, the same framework.

Original languageEnglish (US)
Title of host publicationDigital-Forensics and Watermarking - 12th International Workshop, IWDW 2013, Revised Selected Papers
PublisherSpringer Verlag
Number of pages15
ISBN (Print)9783662438855
StatePublished - 2014
Event12th International Workshop on Digital-Forensics and Watermarking, IWDW 2013 - Auckland, New Zealand
Duration: Oct 1 2013Oct 4 2013

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume8389 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other12th International Workshop on Digital-Forensics and Watermarking, IWDW 2013
Country/TerritoryNew Zealand

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • General Computer Science


  • Co-occurrence matrix
  • HUGO (Highly Undetectable Stegonagraphy)
  • Mapping co-occurrence
  • Multidimensional co-occurrence
  • Non-uniform quantization
  • Steganalysis
  • Steganography
  • Uniform quantization


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