Robust Image Watermarking Scheme Based on Wavelet Technique

International Journal of Computer Science and Security

Haval Mohammed Sidqi¹  Aree Ali Mohammed¹ 

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关键词: Multi-bands Wavelet;    Semi Blind Watermark Detection;    Robustness;   

DOI  :  

来源: Computer Science and Security

【 摘 要 】

In this paper, an image watermarking scheme based on multi bands wavelet transformation method is proposed. At first, the proposed scheme is tested on the spatial domain (for both a non and semi blind techniques) in order to compare its results with a frequency domain. In the frequency domain, an adaptive scheme is designed and implemented based on the bands selection criteria to embed the watermark. These criteria depend on the number of wavelet passes. In this work three methods are developed to embed the watermark (one band (LL|HH|HL|LH), two bands (LL&HH | LL&HL | LL&LH | HL&LH | HL&HH | LH&HH) and three bands (LL&HL&LH | LL&HH&HL | LL&HH&LH | LH&HH&HL) selection. The analysis results indicate that the performance of the proposed watermarking scheme for the non-blind scheme is much better than semi-blind scheme in terms of similarity of extracted watermark, while the security of semi-blind is relatively high. The results show that in frequency domain when the watermark is added to the two bands (HL and LH) for No. of pass =3 led to good correlation between original and extracted watermark around (similarity = 99%), and leads to reconstructed images of good objective quality (PSNR=24 dB) after JPEG compression attack (QF=25). The disadvantage of the scheme is the involvement of a large number of wavelet bands in the embedding process.

【 授权许可】

Unknown