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This paper presents a scheme for improving the image quality produced by most super-resolution (SR) algorithms. In the proposed scheme the quality of a given image whose size has been increased by a SR system, is improved by using an iterative back projection and sharpening process. The improvement of the image quality obtained by using the proposed method used together with several previously proposed...
Recently hierarchical threshold secret image sharing (SIS) scheme was proposed to provide hierarchical access structures to the conventional SIS. These hierarchical access structures are more adequate than the conventional SIS in many practical situations. However in the actual hierarchical SIS scheme, even if the access condition is not satisfied, the secret image is visually leaked, which is very...
This paper presents an improvement of interpolation-based (k,n)-threshold secret image sharing (SIS) scheme, where a secret data payload is optimized using Lagrange Interpolation operated in GF(28). A secret data can be not only images but also any type of files, such as documents and executable files, which is hidden using Least Significant Bit (LSB) steganography into n innocent-looking images called...
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