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In 2006, Zhang and Wang proposed the Exploiting Modification Direction method (EMD) technique, which has good embedding capacity (about 1.16bpp) and high image quality (about 52dB) in irreversible data hiding field. Later other scholars have continued making improvements on EMD to increase data embedding capacity. However, these methods do not possess reversibility. Therefore, this paper exploits...
In this paper, we propose an adaptive embedding algorithm for VQ-compressed images. Adjusting the predefined distance threshold according to the required image visual quality, the proposed algorithm-which is designed as a codeword arrangement strategy-clusters a number of similar codewords together such that a codeword in a group can embed a sub-message while preserving embedding capacity and achieving...
Demosaicking interpolation and digital zooming are two significant techniques for the quality of enlarged full-color image in resource-constrained single chip devices. This paper proposes an effective demosaicking and zooming algorithm by referencing to the neighboring information. In addition to considering one direction neighboring information to estimate the missing value, the EDZ algorithm develops...
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