Robust Lossless Image Data
Hiding Designed for SemiFragile Image Authentication
ZHICHENG NI, YUN Q. SHI, FELLOW, IEEE, NIRWAN ANSARI,
SENIOR MEMBER, IEEE, WEI SU, SENIOR MEMBER, IEEE,
QIBIN SUN, AND XIAO LIN, SENIOR MEMBER, IEEE
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO
TECHNOLOGY, VOL. 18, NO. 4, APRIL 2008
報告人: 曹仁傑
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Outline
 Lossless Data Hiding
 Lossless Image Data Hiding Algorithm
 Experimental Results
 Conclusions
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Lossless Data Hiding
 C. De Vleeschouwer, J. F. Delaigle, and B.
Macq,
 “Circular interpretation of bijective
transformations in lossless watermarking
for media asset management,”
 IEEE Trans. Multimedia, vol. 5, no. 1, pp.
97–105,Mar. 2003.
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Histogram mapping onto a circle
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Data (bit “1”) embedding diagram
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Lossless Image Data Hiding
Algorithm
Distribution of difference value α
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Bit embedding algorithm in each block (where K is
threshold, is difference value).
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Category 1
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Category 2 & 3
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Category 4
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Data Extraction
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1) If the absolute difference value α is larger
than the threshold K.
2) If the absolute value of the difference
value α is less than the threshold K.
3) Error Correction Code
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Experimental Results
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Conclusions
 This technique has the following
advantages:
 1) no salt-and-pepper noise
 2) applicable to virtually all images
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