Digital Watermarking of D Head Model Animation Parameters

The enforcement of intellectual property rights is dif cult for digital data One possibility to support the enforcement is the embedding of digital watermarks containing information about copyright owner and or receiver of the data Watermarking methods have al ready been presented for audio images video and polygonal D models In this paper we present a method for digital watermarking of model animation parameter data sets for example MPEG facial ani mation parameters The watermarks are additively embedded into the parameter values and can be re trieved either from the watermarked parameters or from video sequences rendered using the watermar ked animation parameters for head animation For retrieval from rendered sequences the facial anima tion parameters have to be estimated rst using ap propriate estimation methods Experimental results con rm the applicability of the presented watermar king technique