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Updated: Jan 19, 2026

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Enhance embedding capacity for switch map based multi-group EMD data hiding.

Yan-Xiao Liu1, Ching-Nung Yang2, Qin-Dong Sun1

  • 1Department of Computer Science and Engineering, XI'AN University of Technology, XI'AN, China.

Mathematical Biosciences and Engineering : MBE
|September 11, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces an enhanced multi-group EMD data hiding method using a novel Huffman code-based switch map. The new approach significantly boosts embedding capacity compared to existing Exploiting Modification Direction (EMD) techniques.

Keywords:
Exploiting Modification DirectionHuffman codedata Hidingswitch map

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Area of Science:

  • Computer Science
  • Information Security
  • Digital Watermarking

Background:

  • Exploiting Modification Direction (EMD) based data hiding offers high stego-image quality and security.
  • Previous enhancements include section-wise EMD and switch map-based multi-group EMD to increase embedding capacity.

Purpose of the Study:

  • To improve the embedding capacity of EMD-based data hiding schemes.
  • To address limitations in existing switch map constructions for multi-group EMD.

Main Methods:

  • Developed a new switch map utilizing Huffman coding principles.
  • Constructed an enhanced multi-group EMD scheme incorporating the Huffman code-based switch map.

Main Results:

  • The proposed Huffman code-based switch map allows for more codewords with longer code-lengths.
  • Achieved higher embedding capacity compared to Wang et al.'s scheme and other EMD-based methods.

Conclusions:

  • The enhanced multi-group EMD with a Huffman code-based switch map is an effective data hiding technique.
  • This method offers a superior solution for increasing embedding capacity in digital watermarking.