[PDF] Top 20 A Survey of Digital Watermarking Techniques and Performance Evaluation Metrics

... 2. Feig (1990) pointed out that, it only takes 54 multiplications to compute DCT for a block of 8x8, but in wavelet, calculation depends upon the length of the filter used, which is at least 1 multiplication per ... See full document

... Fourier Transform (FT) is a process that transforms a continuous event into its frequency components. The correspondent transform for discrete valued function requires the Discrete Fourier Transform (DFT). In ... See full document

... ABSTRACT: Digital watermarking techniques have emerging techniques for copyright protection and ...the digital contents. Digital watermarking field has emerging articles ... See full document

... Chapter Four: Include project methodology and design whole methodology in general, in addition start to design the algorithms of two methods (Histogram Shifting, Spread Spectrum), as result, we designed algorithms based ... See full document

... Digital watermarking techniques can be categorized into multiple categories dependent upon the various ...domain watermarking technique is divided into two domains named as spatial domain and ... See full document

... of digital data such as audio, images and videos to the public has increased by the usage of internet and ...concept. Digital watermarking is a technology being developed in response to ensure and ... See full document

... audio watermarking technique tamper detection and prevention ...subjective evaluation is done to know the Mean Opinion ...objective evaluation is done as well by calculating MSE, PSNR ... See full document

... The main advantages of pixel based methods are that they are conceptually simple and have very low computational complexities and therefore are widely used in video watermarking where real-time performance ... See full document

... of digital data has been increased. Digital data such as audio, video and images are easily created, copied, processed, stored and distributed among the ...of digital data new technology has been ... See full document

... with watermarking to enhance the performance of conventional watermarking ...video watermarking algorithm which combined neural networks with motion estimation in the wavelet ...novel ... See full document

... Cold start problem describes a situation in which a recommender system is unable to make meaningful recommendations due to an initial lack of ratings. Cold start occurs when a new user or item has just entered the ... See full document

... visual watermarking technique; it is an exclusive knowledge that can add watermarked info to the object picture taken the data with digital cameras lacking some unambiguous additional hardware ... See full document

... the watermarking technique is robust to attacks in both frequency and time ...proposed watermarking scheme can also be applied to data hiding or image ... See full document

... A Digital image watermarking systems have been proposed as an efficient means for copyright protection and authentication of digital image content against unintended manipulation (spatial chromatic) ... See full document

... Robustness- It is the capability to deal with the copyright information of digital works, the embedded watermark can refuse to accept the common editing process, processing the image and lossy compression. Also ... See full document

... Mouzhi Ge et.al.[5] have focussed on two crucial metrics in RS evaluation: coverage and serendipity. Based on a literature review, they first discussed both measurement methods as well as the trade-off ... See full document

... During transmission the watermarked image may be subjected to noise or various kinds of attacks. At receiving end watermark is extracted as shown in Fig (2) from the watermarked image using the key. The extracted and ... See full document

... The DCT Transform: The discrete cosine transform is a transformation technique based on digital water- marking algorithm and spatial domain technique. The discrete cosine transform is derived from discrete Fourier ... See full document

... The embedding process will use a key for hiding data. The same key will be used for restoring of hidden data. In order to resist changes like lossy compression, etc.., the use of some redundancy in hidden data may be ... See full document

... Kotecha “A Robust Scheme for Digital Video Watermarking based on Scrambling of Watermark”, International Journal of Computer Applications 0975 – 8887 Volume 35– No.2, December 2011 [21] [r] ... See full document