A new method for hiding digital data in the bitstream of an ACELP speech codec is proposed in this paper. The key element of our method is an alternative search strategy for the A...
This paper discusses the construction and implementation problem of trellis coded quantization (TCQ) based data hiding. We explore the robustness and distortion of data hiding by ...
I have been working with Prof. Nasir Memon as a member of ISIS, Information Systems and Internet Security Lab in Polytechnic Institute of NYU since 2006.
The Digital Systems and Media Computing Laboratory (DSMC Lab) was established in the end of 2002 and is located in Patras, Greece. DSMC operates under the School of Sciences and Te...
Vassilis Fotopoulos was born in Patras in 1972. He graduated from the University of Patras, Department of Physics in 1995 and he received his MSc degree from the Electronics Labora...