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[WM]: Hidden pattern in images
Hi, all,
Do you implement the algorithm given in the paper"C.T. Hsu, J. L. Wu. =
Hidden
digital watermarks in images. IEEE Trans. Image Processing, 1999, 8(1):
58=1B$B!A=1B(B68".
What is the meaning of the "residual mask", why a=3Db=3Dc=3D0,d=3D-1, =
e=3D1? how to
implement the operation "expand"? where is the scaling factor of the
algorithm?
And is it the fist paper to embedding a pattern into an image, instead =
of a
sequence of bits or only one bit information?
thank you
--
------=3D_Part_162972_18636156.1183876429871
Content-Type: text/html; charset=3DISO-2022-JP
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
<br clear=3D"all">
<div><font size=3D"2">Hi, all,</font></div>
<div> </div>
<div><font size=3D"2">Do you implement the algorithm given in the =
paper"C.T. Hsu, J. L. Wu. Hidden digital watermarks in
images. IEEE Trans. Image Processing, 1999, 8(1): =
58=1B$B!A=1B(B68".</font></div>
<div> </div>
<div><font size=3D"2">What is the meaning of the "residual =
mask", why a=3Db=3Dc=3D0,d=3D-1, e=3D1? how to implement the =
operation
"expand"? where is the scaling factor of the =
algorithm?</font></div>
<div> </div>
<div><font size=3D"2">And is it the fist paper to embedding a pattern =
into an image, instead of a sequence of bits or only one bit
information?</font></div>
<div> </div>
<div><font size=3D"2">thank you</font></div><br>--=20
------=3D_Part_162972_18636156.1183876429871--
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