Search results for "Copyright protection"
showing 3 items of 3 documents
A robust blind 3-D mesh watermarking based on wavelet transform for copyright protection
2019
Nowadays, three-dimensional meshes have been extensively used in several applications such as, industrial, medical, computer-aided design (CAD) and entertainment due to the processing capability improvement of computers and the development of the network infrastructure. Unfortunately, like digital images and videos, 3-D meshes can be easily modified, duplicated and redistributed by unauthorized users. Digital watermarking came up while trying to solve this problem. In this paper, we propose a blind robust watermarking scheme for three-dimensional semiregular meshes for Copyright protection. The watermark is embedded by modifying the norm of the wavelet coefficient vectors associated with th…
Hybrid blind robust image watermarking technique based on DFT-DCT and Arnold transform
2018
In this paper, a robust blind image watermarking method is proposed for copyright protection of digital images. This hybrid method relies on combining two well-known transforms that are the discrete Fourier transform (DFT) and the discrete cosine transform (DCT). The motivation behind this combination is to enhance the imperceptibility and the robustness. The imperceptibility requirement is achieved by using magnitudes of DFT coefficients while the robustness improvement is ensured by applying DCT to the DFT coefficients magnitude. The watermark is embedded by modifying the coefficients of the middle band of the DCT using a secret key. The security of the proposed method is enhanced by appl…
Present Uncertainty and Looking to the Past: The Ambiguous Literary Nationalism of Putnam’s Monthly
2023
Putnam’s Monthly (1853-1857) was one of the best literary and general interest magazines in antebellum America. Besides its high quality, what made the New York-based magazine stand out was its commitment to publishing American writers and focusing on American themes at a time when, with no reliable international copyright protection in place, many periodicals in the United States were in the habit of reprinting the works of foreign (primarily British) authors, sometimes without payment. However, despite its optimistic literary nationalism, Putnam’s Monthly expressed uncertainty about the quality of contemporary American literature and, indeed, about the capacity of American society to enco…