A novel reversible data hiding scheme with twodimensional
A novel reversible data hiding scheme with two-dimensional histogram shifting mechanism Source: Multimedia Tools and Applications, 77, pages 28777– 28797(2018) Author: Phuoc-Hung Vo , Thai-Son Nguyen , Van-Thanh Huynh , Thanh-Nghi Do Speaker: Xu Shuying Date: 2020/02/13 1
Outline • Introduction • Related works • Proposed scheme • Experiments • Conclusions
Introduction(1/1) Stereo image An example of stereo image pair. a Left image, b Right image
Related works(1/2) Discrete cosine transform
Related works(2/2) Histogram shifting
Proposed scheme(1/12) Flowchart The flowchart of the proposed embedding process in stereo image
Proposed scheme(2/12) DCT and Quantization Standard quantization table Q 50
Proposed scheme(3/12) DCT and Quantization
Proposed scheme(4/12) Similar block searching T =5 Three areas of an 8× 8 block in DCTdomain (S: Searchingarea, E: Embeddingarea, blank: non-usedarea)
Proposed scheme(5/12) Rounded and shifted block
Proposed scheme(6/12) two-dimensional histogram
Proposed scheme(7/12) Data hiding
Proposed scheme(8/12) Data hiding
Proposed scheme(9/12) Data hiding
Proposed scheme(10/12) Extracting process
Proposed scheme(11/12) Extracting process
Proposed scheme(12/12) Extracting process
Experimental results(1/3)
Experimental results(2/3) 2014 2009 [1] Yang W-C, Chen L-H (2015) Reversible DCT-based data hiding in stereo images. Multimed Tools Appl 74(17): 7181– 7193
Conclusions The proposed solution offers reversibility and high embedding capacity while maintaining acceptable quality of stereo-images.
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