نتایج جستجو برای: multiplicative video watermarking

تعداد نتایج: 193693  

Journal: :IEEE Transactions on Circuits and Systems II: Express Briefs 2007

Journal: :IJDCF 2009
Yaqing Niu Jianbo Liu Sridhar Sri Krishnan Qin Zhang

Perceptual Watermarking should take full advantage of the results from human visual system (HVS) studies. Just noticeable distortion (JND), which refers to the maximum distortion that the HVS does not perceive, gives a way to model the HVS accurately. An effective Spatio-Temporal JND model guided video watermarking scheme in DCT domain is proposed in this paper. The watermarking scheme is based...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2021

Journal: :International Journal on Smart Sensing and Intelligent Systems 2017

Journal: :Indian Journal of Science and Technology 2017

2014
S. K. Jayanthi K. Sridevi

The escalation of internet has increased the usage of multimedia contents for wide range of functions. The easy access of the digital contents paves way to manipulate, edit and duplicate the contents using available image processing software. Watermarking process ensures copy protection and data authentication to the multimedia content by embedding watermark. The present paper proposes fidelity...

2003
Adnan M. Alattar Mehmet Utku Celik Eugene T. Lin

A novel watermarking algorithm for watermarking low bit-rate MPEG-4 compressed video is developed and evaluated in this paper. Spatial spread spectrum is used to invisibly embed the watermark into the host video. A master synchronization template is also used to combat geometrical distortion such as cropping, scaling, and rotation. The same master synchronization template is used for watermarki...

2005
Gwenaël J. Doërr Jean-Luc Dugelay

Digital watermarking has first been introduced as a possible way to ensure intellectual property (IP) protection. However, fifteen years after its infancy, it is still viewed as a young technology and digital watermarking is far from being introduced in Digital Right Management (DRM) frameworks. A possible explanation is that the research community has so far mainly focused on the robustness of...

2006
Suxia Cui Yonghui Wang

In this paper, the authors conduct a review on redundant wavelet transform (RDWT) in video signal processing. As an over-complete version of discrete wavelet transform (DWT), RDWT provides several advantages over the traditional DWT. In video coding area, we utilize its shift-invariant property and its phase-diverse multihypothesis, which are not provided by DWT, to build high performance video...

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