[PDF] Top 20 A comparative study of watermarking techniques in spatial and frequency domains

... addition, watermarking is another mechanism that is used in protecting the integrity of intellectual property rights of digital media, such as texts, audios, videos, and ...A watermarking algorithm is made ... See full document

... the watermarking problem is to achieve a better tradeoff between robustness and ...simultaneous spatial localization and a frequency spread of the watermark within the host image ...different ... See full document

... Wavelet Transform (DWT). Since high frequencies will be lost by compression or scaling, the watermark signal is applied to the lower frequencies or applied adaptively to frequencies that contain important information of ... See full document

... the watermarking of digital images can be divided into two ...images, spatial-domain, for embedding the ...into frequency components, and then the watermark is embedded into specific frequency ... See full document

... Wavelet theory is an extension of Fourier theory in many aspects and it is introduced as an alternative to the short-time Fourier transform (STFT). In Fourier theory, the signal is decomposed into sines and cosines but ... See full document

... as frequency domain properties. This is due to the fact that spatial domain watermarking has advantage of less computational cost and frequency domain watermarking provides more ...low ... See full document

... fragile watermarking algorithm for the authentication of ...LSB watermarking schema in [6] by using random mapping ...digital watermarking and cryptography for embedding the secret information in ... See full document

... According to the field where the water mark is introduced, these techniques are divided into two categories, namely the spatial domain and the area of conversation [2]. Space Field Methods modify the ... See full document

... digital watermarking appeared first in 1993, when Tirkel introduced two watermarking methods to conceal the watermark information within the ...media. Watermarking is the method that inserts ... See full document

... sided figure of the inscribed sphere is chosen to implant watermark. First of all, the embedding area is conducted in one-level WDT and the low frequency WDT coefficient is separated into non-overlapping blocks; ... See full document

... digital watermarking hides the sensitive original data to protect it from copying & its ...present techniques of digitized ...digitized watermarking, sensitive data is invaded to protect the ... See full document

... the frequency domain and wavelet transforms produce good resolution in both, frequency and time ...different frequency bands and process those frequency bands ...low frequency ... See full document

... of watermarking are security, capacity, robustness and imperceptibility ...namely spatial domain and frequency domain algorithms. In spatial domain techniques’ embedding is done by ... See full document

... Discrete Wavelet Transform divides the image into sub bands. Small waves which are called wavelets transform an image into the frequency domain [12]. This transform is advantageous than the others transforms. ... See full document

... In this work, Robust and oblivious watermarking algorithm is proposed and its performance against various image attacks is good. Algorithm is designed for embedding both 32×32 size and 64×64 size watermarks. ... See full document

... The proposed method uses Local Binary Pattern (LBP) and Fuzzy Histogram Equalization for improving the Peak Signal-to-Noise Ratio (PSNR) value. This semi-fragile watermarking scheme uses LBP before ... See full document

... An image usually consists of enormous amount of data and requires large number of space in the memory. If more number of data is required for transmission then it takes much time to deliver the data to the receiver. Thus ... See full document

... this study was to evaluate the Physico-chemical parameters, heavy metals and seed germination of treated and untreated effluent of sugar industry especially for irrigation ... See full document

... These classifiers are also famous by the name of hand crafted spam classifiers and these are the types in which the spams are categorized on the basis of the content it holds or information it stores. It checks for text ... See full document

... Digital watermarking are – Imperceptibility, Robustness and Embedding Capacity [8], ...digital watermarking algorithm should sustain against various intentional and unintentional attacks while storing or ... See full document