70 ◾ Information Security Management Handbook
methods, initially, the image is decomposed into higher- and lower-resolution bands by choosing a
particular wavelet. e watermarks are then embedded into high-resolution bands where the HVS
is less sensitive.
Fingerprinting techniques are another form of watermarking techniques. Fingerprinting
makes the digital copy unique by embedding a unique identification or serial number into it.
Fingerprinting has an ability to track back the culprits who circumvent the copy protection by
analyzing the pirate copy under circulation. Watermarking deals with embedding identification
information in a cover, such as a video or audio signal robustly, whereas fingerprinting mainly
concentrates on creating a unique ...