Multimedia Forensics
Our study in multimedia forensics has been sponsored by the
National Science Foundation, National Institute of Justice and the SHSU Office of Research and Sponsored Programs.
We briefly introduce our project by showing some examples as
follows:
1.
FORGERY
A. Image forgery examples. Do you
doubt the authenticity of the following two images?
Ground truth: Both images have been
manipulated. Can you reconginze the forgery?
B. Audio forgery examples. You may
compare the following two MP3 audio clips. Please notice the difference
of these two voices.
Ground truth: In above comparisons,
some voices have been manipulated to change the meaning. It may be easy
for you to tell the difference. The challege
is: given a MP3/AAC audio file without any comparison reference, how do
you make a decision and reconginze the forgery?
C. MPEG forgery example. Has the
following MPEG clip been doctored?
Note: Above clip is from Internet.
You may click the start button to watch.
2.
STEGANOGRPAHY
Image Steganogram:
Ground truth: The following message
is hidden in the above JPEG image.
Alzheimer's: The Mysteries of
the Most Common Form of Dementia In November of nineteen ninety-four,
Ronald Reagan wrote a letter to the American people. The former
president shared the news that he had Alzheimer’s
disease. Mister Reagan began what he called his journey into the sunset
of his life. That ten year journey ended on June fifth, two thousand
four, at the age of ninety-three. In his letter, America's fortieth
President wrote about the fears and difficulties presented by Alzheimer’s disease. He said that he and his
wife Nancy hoped their public announcement would lead to greater
understanding of the condition among individuals and families affected
by it. Ronald Reagan was probably the most famous person to suffer from
Alzheimer's disease. In the United States, about four million five
hundred thousand people have the disease. Many millions more are
expected to have it in years to come. Doctors describe Alzheimer's as a
slowly increasing brain disorder. It affects memory and personality --
those qualities that make a person an individual. There is no known
cure. Victims slowly lose their abilities to deal with everyday life. At
first they forget simple things, like where they put something or a person’s name. As time passes, they forget
more and more. They forget the names of their husband, wife or
children. Then they forget who they are. Finally, they remember
nothing. It is as if their brain dies before the other parts of the
body. Victims of Alzheimer’s do die from
the disease, but it may take many years.
If you are interested in our detection, you may take a look at our
recent papers:
· Q. Liu and Z. Chen, “Improved approaches with calibrated
neighboring joint density to steganalysis and
seam-carved forgery in JPEG images", ACM Transactions on
Intelligent Systems and Technology, to appear.
·
M. Qiao, A. sung and Q. Liu, “MP3
audio steganalysis", Information
Sciences, to appear.
· Q. Liu (2011), “Steganalysis of
DCT-embedding based adaptive steganography and YASS”, in Proc.
ACM Workshop on Multimedia & Security, Buffalo, NY, September
29-30, 2011.
· Q. Liu (2011),
“Detection of misaligned cropping and recompression with the same
quantization matrix and relevant forgery”, in Proc. ACM
Multimedia Workshop on Multimedia Forensics and Intelligence,
Scottsdale, Arizona, USA, November 29, 2011
· Q. Liu , A. Sung, and M. Qiao (2011), “Neighboring
joint density-based JPEG Steganalysis”, ACM
Transactions on Intelligent Systems and Technology, 2(2), article
16:1-16.
· Q. Liu , A. Sung, and M. Qiao (2011), “Derivative-based
Audio Steganalysis”, ACM Transactions
on Multimedia Computing, Communications and Applications. 7(3),
article 18:1-19.
Note: Our database and source codes are available here.
Knowledge
Discovery and Information Assurance
Coming soon.
Bioinformatics
Coming soon.
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