Patent ID: 7634660

Claim:
A system facilitating protection of digital signals, the system comprising: a means for processing; a means for storing coupled to the means for processing; a means for obtaining a digital signal, wherein the digital signal comprises multi-dimensional data; a means for partitioning the digital signal into a plurality of segments, wherein the partitioning comprises pseudorandomly segmenting the signal, wherein the plurality of segments are pseudorandomly positioned, such that said segments have the ability to overlap; a means for calculating for one or more segments statistics of a segment that are representative of that segment; a means for quantizing such statistics of a segment to watermark the signal using quantization index modulation (QIM), wherein the statistics associated with at least one said segment are determined using non-local characteristics of at least two said segments, and wherein the at least two segments of the signal are pseudorandomly dimensioned; a means for generating a marked signal equivalent to a combination of the digital signal and the combination of the quantized statistics of the one or more segments, wherein the generating comprises embedding a watermark via quantization index modulation (QIM).