Reversible data hiding deals with the insertion of auxiliary information into a host data without causing any permanent degradation to the original signal. In this contribution a high capacity reversible data hiding scheme, based on the classical difference expansion insertion algorithm, is presented. The method exploits a prediction stage, followed by prediction errors modification, both in the spatial domain and in the S-transform domain. Such two step embedding allows us to achieve high embedding capacity while preserving a high image quality, as demonstrated in the experimental results.
Boato, G., Carli, M., Battisti, F., Azzoni, M., Egiazarian, K. (2012). Difference expansion and prediction for high bit-rate reversible data. JOURNAL OF ELECTRONIC IMAGING, 21(033013) [10.1117/1.JEI.21.3.033013].
Difference expansion and prediction for high bit-rate reversible data
CARLI, Marco;BATTISTI, FEDERICA;
2012-01-01
Abstract
Reversible data hiding deals with the insertion of auxiliary information into a host data without causing any permanent degradation to the original signal. In this contribution a high capacity reversible data hiding scheme, based on the classical difference expansion insertion algorithm, is presented. The method exploits a prediction stage, followed by prediction errors modification, both in the spatial domain and in the S-transform domain. Such two step embedding allows us to achieve high embedding capacity while preserving a high image quality, as demonstrated in the experimental results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.