Moreover, if the value of N is larger, then more feature regions would be essential for information embedding, consequently leading to a superior chance of capturing watermarks with enhanced quality.
Therefore, for capturing the watermark from the N feature region and also for accomplishing the NHS computation, select the largest NHS value to be W, as illustrated in (10).
Besides, there is no disruption due to high-frequency noises, and the watermark captured by the proposed method is more pleasant for the human vision.
For her Landscapes pieces, Chun used a high-DPI photo scanner to capture the watermarks on passports and turn them into large-scale images.
w(i) and (overline {w}(i)) correspondingly illustrate the original watermark and post-captured watermark; M represents the total amount of bits in the watermark image; ⊕ signifies the exclusive-or operation.
MBTA usually captures the high watermark execution time and adds to it an engineering margin to account for the unknown.
Even though there are few losses in the certain feature points due tampering effects like deforming, the watermark can be captured from the other feature regions that are stable.
The construction of the above basic model is suitable for realizing a basic watermarking scenario, but it may not be sufficient to capture the recent watermarking advances.
A review of the literature indicates that the visible watermarking studies have captured significant attention since their applications meet the requirements of many media industries [2, 3].
