Sentence examples for both invisibility and robustness from inspiring English sources

The optimal watermark obtained satisfies both invisibility and robustness requirements.

Therefore the proposed algorithm uses middle frequencies for the insertion of the mark as both invisibility and robustness against low pass filter attacks is required in such an algorithm.

Capacity, invisibility and robustness are the most important criteria in a digital watermarking system.

To cater for the requirements of invisibility and robustness, watermarking techniques employ the spatial and transform domains [9 13].

Even though there are many studies with different approaches, none of watermarking schemes is strongly enough capacity, invisibility and robustness at the same time.

Then, in order to obtain a tradeoff between perceptual invisibility and robustness to image processing techniques, the lowest coefficients are skipped and the watermark is embedded in the last coefficients to obtain a new vector according to the following rule: (20).

QSWTs provide both invisibility and significant resistance against lossy transmission and compression, conditions that are typical in error prone networks.

In order to select the suitable values of the gain factor α in Eqs. 5 and 6 that fulfill both the invisibility and the robustness requirements of the watermarking, we plot with respect to α the PSNR of the watermarked images (Fig. 8 a) and the BCR of the extracted watermarks (Fig. 8 b) after a standard image attack (JPEG lossy with quality factor equals to 40).

The experimental results and computer simulation of the proposed scheme have shown that the proposed approach has the desired properties such as invisibility, blind detection, and robustness against various geometrical and non-geometrical attacks.

However, problems of solvent evaporation in the gels result in the loss of elasticity after longer times, which can lead to failure in both the invisibility and in the revealing processes for these invisible prints.

Localized embedding achieves good invisibility and repeated insertion enhances watermark robustness.