Tampering resistance of a digital watermark scheme has recently drawn much attention of many researchers after various techniques against image manipulations have been presented and proved robust. In this paper, two digital watermark models for resolving rightful ownership are presented; the second one also authenticates the legitimate customer ‐ the user such as a webmaster that obtains an image from an Internet site and wants to use it on his/her site. A scheme conformed to Model-II is presented with simulation results that demonstrate its robustness against JPEG compression, mean and median filtering, noise, cropping, and scaling besides tampering. A comparison to Scheme Lin-O also demonstrates that this proposed scheme is just as robust against image manipulations while requiring no original for watermark detection. ” 2001 Elsevier Science Inc. All rights reserved.
['Phen-Lan Lin']
Digital watermarking models for resolving rightful ownership and authenticating legitimate customer