Hybrid DWT-DCT and Hash function based digital image watermarking for copyright protection and content authentication of DubaiSat-2 images

Saeed Al-Mansoori; Alavi Kunhu

doi:10.1117/12.2067254

20 October 2014 Hybrid DWT-DCT-Hash function based digital image watermarking for copyright protection and content authentication of DubaiSat-2 images

Saeed Al-Mansoori, Alavi Kunhu

Author Affiliations +

Proceedings Volume 9247, High-Performance Computing in Remote Sensing IV; 924707 (2014) https://doi.org/10.1117/12.2067254
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

This paper presents a new technique for copyright protection and content authentication of satellite images. The novelty in the presented approach consists in designing a hybrid Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT) and hash function based digital image watermarking. In this study, two watermarks are embedded in the cover image called robust copyright watermark and fragile authentication watermark. The robust watermark is embedded in hybrid frequency and wavelet domain by applying DWT and DCT respectively. Such two steps embedding allows the proposed approach to provide better imperceptibility in harmony with the human visual system and offers higher robustness against signal processing attacks. Subsequently, the fragile watermark is embedded in a spatial domain using the hash function approach. The proposed hybrid watermarking technique has been tested on DubaiSat-2 images with 1 meter resolution. The experimental results show that the proposed method is robust against JPEG compression, rotation and resizing attacks. In addition, the multi-watermarked image has a good transparency and the fragile watermark is sensitive to any tampering.

Citation Download Citation

Saeed Al-Mansoori and Alavi Kunhu "Hybrid DWT-DCT-Hash function based digital image watermarking for copyright protection and content authentication of DubaiSat-2 images", Proc. SPIE 9247, High-Performance Computing in Remote Sensing IV, 924707 (20 October 2014); https://doi.org/10.1117/12.2067254

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