What is fragile watermarking?
What is fragile watermarking?
Fragile watermarking is one of the integrity protection mechanisms of multimedia data like image, video, and audio. A secure fragile image watermarking scheme, which is used to detect modification or tampering occurred on the image content, is devised in this paper.
Is the most suitable fragile watermark generation approach?
The LSB method, therefore, is generally preferred for embedding watermarks on fragile image watermarking.
What is robust and fragile watermarking?
In digital watermarking, the watermark information could be fragile, semifragile, robust, or hybrid. Fragile watermarks are very sensitive and are used for tamper detection, while the robust watermarks are used to withstand common image processing operations.
What are the criteria for a good watermarking scheme?
The principal objective of the presented scheme is to simultaneously meet all the four requirements (robustness, security, imperceptibility, and capacity) of a good watermarking scheme.
What is robust watermarking?
Robust watermarking is the watermarking algorithm that can survive not only such general operations such as compression, adding noise, filtering, A/D or D/A conversion, and so forth, but also such geometric attacks such as rotation, scaling translation, shearing, and so forth. It is often used in ownership protection.
Which watermark will resist manipulations of media?
Semifragile watermark is robust for acceptable content-preserving manipulations (compression, enhancement, etc.) whereas fragile watermark is robust for malicious distortions such as feature adding or removal. Therefore it is suitable to verify the trustworthiness of data.
How is robustness of watermark calculated?
The main idea is to evaluate robustness of watermarking scheme in terms of perceptual quality, measured by metrics Signal to noise ratio (SNR),Peak signal to noise ratio(PSNR),Weigted peak signal to noise ratio(WPSNR). The goal is to remove the watermark from a content while maximizing perceptual quality[1].
What is robustness in digital watermarking?
