What is watermark robustness?
What is watermark robustness?
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.
What are the categories that comes under robust watermarking?
A categorization of extensive watermarking attacks for evaluating the robustness is presented in [29], where the attacks are classified into protocol, geometrical, removal, and security attacks.
What is dual watermarking?
Dual watermark is a. combination of a visible watermark and an invisible watermark, 1. INTRODUCTION. Digital watermarking is defined as a process of embedding data (watermark) into a multimedia object to help to protect the owner’s right to that object.
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 watermarking in image processing?
Digital image watermarking is a technique in which watermark data is embedded into a multimedia product and, later, is extracted from or detected in the watermarked product. These methods ensure tamper-resistance, authentication, content verification, and integration of the image [1].
What is video watermarking?
A video watermark is an embedded overlay constituting a logo or a text on a video or a copyright disclaimer. It identifies the video content and discourages unauthorized users from accessing or using it.
What is watermark in photos?
A watermark is a logo, piece of text or signature superimposed onto a photograph. Watermarks are typically transparent, so those viewing the image can still admire it. You can usually identify the photographer through the watermark, too.
What is digital image watermarking?