… (2) robustness against various image manipulations called attack. The main attacks can be
categorized as: (1) signal processing like JPEG compression, various types of noise, filtering, …

… and imperceptibility in the face of most attacks, therefore it is a suitable technique for … DWT)
namely DWT-DCT-SVD and lifting wavelet transform (LWT) based scheme namely LWT-DCT…

… with Cox’s algorithm, the performances of NEA will compare among other algorithms like
Gaussian sequence, image fusion, nonlinear quantization embedding with various attacking …

… frequency band of each DCT block of selected DWT sub-band. … similar approach by DCT
based approach and DWT based … quality and robustness under various attacks such as JPEG …

… Various attacks have been modeled on the watermarked image and in all cases, the …
The various attacks which were used are JPEG compression, Gaussian low pass filtering, …

… (DCT) with the concept of inserting an assorted watermark in the video. The algorithms
were … performance against various noise-based attacks. Agarwal et al. [7] explained DWT–DCT-…

… Various attacks used to test the robustness of the watermarking scheme proposed in this
paper are JPEG compression (with different quality factors), median filter, Gaussian filter, …

… against attacks. Here, singular values of watermark1 (fingerprint) and watermark2 (signature)
are obtained by applying DWT-DCT-… resilient to various attacks in the watermarked image. …

… Tables II–IV summarize the proposed watermark detection results comparing with that of
scheme [12] against various attacks. In addition, the detection results of DCT and DWT are …

… mark can be destroyed under various attacks [7]. Image watermarking based on frequency
domain able to achieve high resistance to various attacks [8]. A scheme by Ariatmanto and …