Theory And Implementation Research Of Digital Watermarking Based On The Wavelet Transform

The technology of digital watermarking is to embed the image media ~~ithimperceptibility copyright information, so as to identify the copyright owner, detect andtrack the pirate behavior. Based on the widely study of the theory of digitalwatermarking, this article presents a wavelet-based watermarking technique. along withdeeply analyses of wavelet theory, implementing a fast algorithm of wavelet transformand a thorough discuss of digital watermarking technology of digital image utiliiing themultisolution analyzing theory. A no original image needed. multi-layer warterrnarkembedding and extracting technique is designed and implemented. The experiment datais drawn out as the base of the performance analyses , the algorithm's advantages.disadvantages and the next step in research are also pointed out Basicaflv. the w~velettransformè…·ased wartermarking technique presented here meets ~varterrnark inc ~ eti~ `sneeds, experiment shows it is feasible.