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Data hiding schemes based on quadratic interpolation have the potential to offer better image quality and higher embedding capacity. Being reversible, such schemes also allow user to restore the embedded image back to its original version, which is the key requirement of many applications like medical and military imaging. This paper presents a simplified data hiding scheme based on quadratic interpolation...
In Orthogonal Frequency Division Multiplexing (OFDM) system, high value of Peak-to-Average Power Ratio (PAPR) is an operational problem that may cause non-linear distortion resulting in high Bit Error Rate (BER). Selected Mapping (SLM) is a well known PAPR reduction technique that shows good performance but inflicts added computational overhead. In this paper, using Riemann sequence based SLM method,...
Histogram shifting is one of the most useful techniques of Reversible Data Hiding (RDH). In histogram shifting based data hiding technique, lower distortion and improved capacity can be achieved. In this paper, a new method of reversible data hiding based on compressed gray level histogram shifting has been proposed which provides a high capacity of data hiding and also maintains a good image quality...
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