Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique
The concept of a dual-image based scheme in information sharing consists of concealing secret messages in two cover images; only someone who has both stego-images can extract the secret messages. In 2015, Lu et al. proposed a center-folding strategy where each secret symbol is folded into the reduce...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-10-01
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| Series: | Symmetry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-8994/9/10/223 |
| _version_ | 1811304948465401856 |
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| author | Tzu-Chuen Lu Hui-Shih Leng |
| author_facet | Tzu-Chuen Lu Hui-Shih Leng |
| author_sort | Tzu-Chuen Lu |
| collection | DOAJ |
| description | The concept of a dual-image based scheme in information sharing consists of concealing secret messages in two cover images; only someone who has both stego-images can extract the secret messages. In 2015, Lu et al. proposed a center-folding strategy where each secret symbol is folded into the reduced digit to reduce the distortion of the stego-image. Then, in 2016, Lu et al. used a frequency-based encoding strategy to reduce the distortion of the frequency of occurrence of the maximum absolute value. Because the folding strategy can obviously reduce the value, the proposed scheme includes the folding operation twice to further decrease the reduced digit. We use a frequency-based encoding strategy to encode a secret message and then use the block folding technique by performing the center-folding operation twice to embed secret messages. An indicator is needed to identify the sequence number of the folding operation. The proposed scheme collects several indicators to produce a combined code and hides the code in a pixel to reduce the size of the indicators. The experimental results show that the proposed method can achieve higher image quality under the same embedding rate or higher payload, which is better than other methods. |
| first_indexed | 2024-04-13T08:16:27Z |
| format | Article |
| id | doaj.art-02754b7695744d5b81dfdf23a232b09e |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-04-13T08:16:27Z |
| publishDate | 2017-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-02754b7695744d5b81dfdf23a232b09e2022-12-22T02:54:45ZengMDPI AGSymmetry2073-89942017-10-0191022310.3390/sym9100223sym9100223Reversible Dual-Image-Based Hiding Scheme Using Block Folding TechniqueTzu-Chuen Lu0Hui-Shih Leng1Department of Information Management, Chaoyang University of Technology, Taichung 41349, TaiwanDepartment of Mathematics, National Changhua University of Education, Changhua 50058, TaiwanThe concept of a dual-image based scheme in information sharing consists of concealing secret messages in two cover images; only someone who has both stego-images can extract the secret messages. In 2015, Lu et al. proposed a center-folding strategy where each secret symbol is folded into the reduced digit to reduce the distortion of the stego-image. Then, in 2016, Lu et al. used a frequency-based encoding strategy to reduce the distortion of the frequency of occurrence of the maximum absolute value. Because the folding strategy can obviously reduce the value, the proposed scheme includes the folding operation twice to further decrease the reduced digit. We use a frequency-based encoding strategy to encode a secret message and then use the block folding technique by performing the center-folding operation twice to embed secret messages. An indicator is needed to identify the sequence number of the folding operation. The proposed scheme collects several indicators to produce a combined code and hides the code in a pixel to reduce the size of the indicators. The experimental results show that the proposed method can achieve higher image quality under the same embedding rate or higher payload, which is better than other methods.https://www.mdpi.com/2073-8994/9/10/223dual stego-imagesinformation hidingcenter-folding strategyblock folding |
| spellingShingle | Tzu-Chuen Lu Hui-Shih Leng Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique Symmetry dual stego-images information hiding center-folding strategy block folding |
| title | Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique |
| title_full | Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique |
| title_fullStr | Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique |
| title_full_unstemmed | Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique |
| title_short | Reversible Dual-Image-Based Hiding Scheme Using Block Folding Technique |
| title_sort | reversible dual image based hiding scheme using block folding technique |
| topic | dual stego-images information hiding center-folding strategy block folding |
| url | https://www.mdpi.com/2073-8994/9/10/223 |
| work_keys_str_mv | AT tzuchuenlu reversibledualimagebasedhidingschemeusingblockfoldingtechnique AT huishihleng reversibledualimagebasedhidingschemeusingblockfoldingtechnique |