[PDF] Top 20 A Robust Image Watermarking in the Joint Time-Frequency Domain

... problem. Watermarking techniques are proposed as a solution to copyright protection of digital media ...new, robust, and high-capacity watermarking method that is based on spatiofrequency (SF) ... See full document

... Digital image watermarking is considered to be one of the extremely valuable technology for providing security to the digital media on ...an image, video, song inside the signal itself is known as ... See full document

... The algorithm is to place the watermark into the set of frequency component that are perceptually significant. It has been shown that the watermarks are very hard to detect because they consist of relatively weak ... See full document

... of image i.e.: a colour image of 64x64 size has a period of 192, ...scrambled image is reduced back to its original image ...secret image when the Arnold transform is applied to an ... See full document

... Singular Value Decomposition is a robust and reliable orthogonal matrix decomposition method. This technique is more adaptive in signal processing area, due to its conceptual and stability reasons. SVD composed of ... See full document

... Digital watermarking is commonly used in content protection and authentication applications by means of hiding data that is used for verification in digital multimedia ...digital watermarking for images, ... See full document

... new image geometric transformation technique which is an extension of wavelet ...low frequency and a band pass image, band pass images represents the discontinuities at the edges of the ... See full document

... digital image watermarking techniques in different domains and their ...in frequency domain must be combined with another techniques which has high capacity and strong robustness against ... See full document

... Digital watermarking is a technique used for hiding secretes information into digital image, audio or ...Watermark image involves two stages named embedding and ...in image is more ... See full document

... of watermarking algorithms in the fre- quency domain can be implemented in parallel and we compared the OpenMP, MPI, CUDA implementations of a simple representative of the α − β family of ... See full document

... transform domain methods, which to embed a watermark, a transformation is first applied to the host data, and then modifications are made to the transform ...The watermarking scheme based on the transform ... See full document

... invisible watermarking algorithm is proposed in DCT domain which is robust and ...oblivious. Robust indicates that there is high possibility of extracting watermark with less error even the ... See full document

... and time-frequency ...digital watermarking schemes to protecting the watermark from the several and possible attacks based on the different ...good image, the PSNR value should be ...digital ... See full document

... minimal frequency is denoted, in which the component having higher frequency is presented by FH while FM signifies the component with middle frequency that is selected for selecting the position for ... See full document

... all time-frequency representations, the spectro- gram is the simplest ...low time- frequency ...free time- frequency representation, can be used for speech ...modeling ... See full document

... dual-channel time-spread echo method for audio ...a robust image watermarking scheme in the ridgelet transform ...an image which contain line singularities is ...cover image by ... See full document

... Digital watermarking is a branch of Data hiding which is used to hide proprietary information in digital media like photographs, digital music, or digital video ...[1-2]. Watermarking is the process of ... See full document

... digital watermarking technology is now attracting significant ...original image into four sub-band ...watermarked image and performance evaluation ... See full document

... color image watermarking can also be used for controlling the creating of illegal duplicate copy of the original source of ...proposed watermarking system we can easily trace those distributors who ... See full document

... an image is computed and then the Fourier-Mellin transform is performed on the magnitude, the watermark is embedded in the magnitude of the resulting ...watermarked image is reconstructed by performing the ... See full document