Efficient secure optical DWT-based watermarked 3D video transmission over MC-CDMA wireless channel.

Autor: El-Bakary, E. M., El-Shafai, Walid, El-Rabaie, S., Zahran, O., El-Halawany, M., El-Samie, F. E. Abd
Zdroj: Journal of Optics (09728821); Dec2023, Vol. 52 Issue 4, p2068-2089, 22p
Abstrakt: Three-dimensional video (3DV) communication through wireless channels suffers from bit stream losses. Therefore, the efficient performance of 3DV transmission techniques over wireless networks is considerably a hot research topic. A high compression ratio must be introduced to meet future bandwidth restriction for optimized 3DV transmission. Unfortunately, the compressed 3DV bit streams are more sensitive and vulnerable to packet losses. In this paper, we suggest the application of chaotic Baker map interleaving with equalization and convolution coding for efficient discrete wavelet transform (DWT)-based singular value decomposition watermarked 3DV transmission over a multi-carrier code division multiple access wireless channels. Firstly, the compressed 3DV frames are watermarked using the DWT + SVD watermarking process. After that, chaotic interleaving is applied to minimize the channel effects on the transported bit streams, and it also adds an encryption level to the transported 3DV frames. Several experiments on different (DWT + SVD) watermarked 3DV frames have been tested to test the performance of the proposed hybrid techniques. The experimental results confirm that the received watermarked 3DV frames still have high peak signal-to-noise ratios, and efficient watermark extraction is possible. Thus, the main contribution of this paper is to present efficient hybrid techniques for secure 3DV communication. These proposed hybrid techniques efficiently protect the copyright of the 3DV streams to preserve both robustness and imperceptibility. Therefore, they have high quality, acceptable bit rates, low computational complexity, and adequate immunity to different types of multimedia attacks compared to the traditional techniques. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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