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[WM]: doubt in dct based watermarking in images
hi,
iam working on the paper "A ROBUST DCT-BASED WATERMARKING FOR
COPYRIGHT PROTECTION " IEEE Transactions on Consumer Electronics Vol
46,No.3 August 2000.In this paper they have embedded the watermark image
in the LSB of DCT coefficient.But i found that the DCT Coefficients r in
negative non integers (eg. -0.0015). i thought to embed the watermark in
the LSB of the absolute DCT coeff value is it right. or how to take
binary value of such -Ve non integers.please help me.
Thanks in advance.
mailto_vinu@yahoo.com
mailto_vinu@sify.com
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