But in winter 1958, Witten chanced on an undoubtedly genuine medieval manuscript whose watermark and, crucially, worm holes exactly matched those of the map.
The Season 7 leak appears to have originated from one of HBO's international distribution partners, Star India, whose watermark is visible on the video online. .
Leading our list: Digimarc, whose digital watermarking technologies for authenticating driver's licenses and thwarting digital piracy fill a timely need in a security-conscious world.
Leading our list: Digimarc, whose digital watermarking technologies--for authenticating driver's licenses and thwarting digital piracy--fill a timely need in a security-conscious world.
Leading our list: Digimarc, whose digital watermarking technologies for authenticating drivers' licenses and such and thwarting digital piracy fill a timely need in a security-conscious world.Digimarc's 2001 acquisition of Polaroid's digital identification systems helped it post a five-year annualized sales growth rate of 242%.
The proposed technique has been introduced to increase the performance of the optimum watermark decoder, whose structure is theoretically based on a maximum-likelihood (ML) estimation scheme.
Here, we use signal-to-noise ratio (SNR) of speech to evaluate the modified watermark method, whose results are shown in Table 2.
Based on the distortion rates, anti-counterfeiting watermark is computed by a well-designed linear estimation algorithm, whose validity is theoretically proved by analyzing anti-counterfeiting watermark bit error.
In one prototype, John V. Pavlik, a professor of journalism, embedded a fiber optic camera in the goggles that records video while also encoding location, time and ownership, thereby "watermarking" the video and establishing whose exclusive pictures are whose.
The watermark is created as a pseudorandom sequence, whose length is determined by the length of the voiced speech region (approximately 1300 samples).
A watermark bearing the image of the person whose portrait is on the bill can be found on all $10, $20, $50, and $100 bills series 1996 and later, and on $5 bills series 1999 and later.
