Title :
Joint data hiding-source coding of still images
Author :
Dikici, Cagatay ; Idrissi, Khalid ; Baskurt, Atilla
Author_Institution :
Lab. d´Inf. en Images et Syst. d´Inf., INSA de Lyon, Lyon, France
Abstract :
There exists a strong duality between Source Coding with side information (known as Distributed Source Coding) and Channel Coding with Side Information (informed data-hiding). Inspired by the system in [1], which is a combination of Data Hiding and Distributed Source Coding scheme, we have extended this system to 2D natural images. Hence a cascade of informed data hiding for a still image is followed by a distributed source coding with a fidelity criterion, given that a noisy version of the input image is available only at the decoder. We used baseline JPEG compression with different quality values for creation of the Side Information, a memoryless quantization for informed data hiding, and LDPC based coset construction for source coding. The preliminary experimental results are given using the theoretical findings of the duality problem.
Keywords :
combined source-channel coding; data compression; decoding; image coding; natural scenes; parity check codes; stereo image processing; 2D natural images; JPEG compression; LDPC; channel coding; coset construction; distributed source coding scheme; fidelity criterion; joint data hiding-source coding; low density parity check codes; memoryless quantization; side information; still images; Channel coding; Decoding; Distributed databases; Parity check codes; Source coding; Watermarking;
Conference_Titel :
Signal Processing Conference, 2006 14th European
Conference_Location :
Florence