Efficient Digital Image Authentication and Tamper Localization Technique Using 3Lsb Watermarking
The authentications of digital images have become the
center of attentions for certain group of companies since
the number of doctored images increased. Tampering the
digital images in a way that it's impossible to be detected
by naked eyes has become easier with development of
image editing tools. Digital watermarking can preserve the
authentication of digital images. In this paper we proposed
an efficient image tamper detection method using 3 LSB
(last significant bit) watermarking technique which is able
to authenticate the digital image and detect the tamper
locations accurately. In the proposed algorithm a 12-bit
watermark key will be created from each block of host
image which will be embed to last three significant bit of
each block. Our proposed method improved tamper
detection technique proposed by Prasad's in sense of
tamper detection rate by 40 percent. The experimental
result clearly proved the efficiency of our proposed
method.
Keywords: Image Authentication, Tamper Detection, 3Lsb watermarking, watermarking for tamper detection.
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ABOUT THE AUTHORS
Sajjad Dadkhah
Phd Candidate at University Technology Malaysia
Azizah Abd Manaf
Prof Dr Azizah is deputy dean at University Technology Malaysia
Somayeh Sadeghi
Master student at University Technology Malaysia
Sajjad Dadkhah
Phd Candidate at University Technology Malaysia
Azizah Abd Manaf
Prof Dr Azizah is deputy dean at University Technology Malaysia
Somayeh Sadeghi
Master student at University Technology Malaysia
