?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Digital+Image+Watermarking+for+Arbitrarily+Shaped+Objects+Based+On+SA-DWT&rft.creator=Essaouabi%2C+A&rft.creator=Ibnelhaj+%2C+E&rft.creator=Regragui%2C+F&rft.subject=Human+Computer+Interaction&rft.description=Many+image+watermarking+schemes+have+been+proposed+in+recent+years%2C+but+they+usually+involve+embedding+a+watermark+to+the+entire+image+without+considering+only+a+particular+object+in+the+image%2C+which+the+image+owner+may+be+interested+in.+This+paper+proposes+a+watermarking+scheme+that+can+embed+a+watermark+to+an+arbitrarily+shaped+object+in+an+image.+Before+embedding%2C+the+image+owner+specifies+an+object+of+arbitrary+shape+that+is+of+a+concern+to+him.+Then+the+object+is+transformed+into+the+wavelet+domain+using+in+place+lifting+shape+adaptive+DWT(SADWT)+and+a+watermark+is+embedded+by+modifying+the+wavelet+coefficients.+In+order+to+make+the+watermark+robust+and+transparent%2C+the+watermark+is+embedded+in+the+average+of+wavelet+blocks+using+the+visual+model+based+on+the+human+visual+system.+Wavelet+coefficients+n+least+significant+bits+(LSBs)+are+adjusted+in+concert+with+the+average.+Simulation+results+shows+that+the+proposed+watermarking+scheme+is+perceptually+invisible+and+robust+against+many+attacks+such+as+lossy+compression+(e.g.+JPEG%2C+JPEG2000)%2C+scaling%2C+adding+noise%2C+filtering%2C+etc.&rft.publisher=International+Journal+of+Computer+Science+Issues%2C+IJCSI&rft.date=2009-10&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F6719%2F1%2FIJCSI-5-1-8.pdf&rft.identifier=++Essaouabi%2C+A+and+Ibnelhaj+%2C+E+and+Regragui%2C+F++(2009)+Digital+Image+Watermarking+for+Arbitrarily+Shaped+Objects+Based+On+SA-DWT.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F6719%2F