A New Blind Image Watermarking Technique for Dual Watermarks Using Low-Frequency Band DCT Coefficients

Al-Gindy, Ahmed; Tawfik, A.; Al-Ahmad, Hussain; Qahwaji, Rami

doi:10.1109/icecs.2007.4511047

Cited by 12 publications

(8 citation statements)

References 3 publications

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“…In [7], a robust blind watermarking technique for embedding two watermarks into a host image was proposed. Watermarks are combined and then embedded into a host image.…”

Section: Related Effortsmentioning

confidence: 99%

Logo embedding in grayscale images using turbo product codes

Maeeni

Kalbat

Al-Ahmad

2015

2015 International Conference on Information and Communication Technology Research (ICTRC)

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In this paper, we investigate the robustness achieved by hard-input hard-output (HIHO) turbo product code (TPC) in a grayscale image watermarking. The TPC scheme is based on the concatenation of a BCH product code. The general concept of the TPC is to construct two or more simple codes in order to achieve remarkable error performance. Unlike many proposed algorithms in the literature, HIHO-TPC require a manageable complexity encoding and decoding algorithms. Firstly, the data in the logotype (logo) is encoded using TPC and then inserted in the image. Different grayscale images are investigated and evaluated in terms of robustness to different photometric attacks by using Stirmark software package. Experimental results show that the proposed blind watermarking algorithm has a strong ability of extracting the embedded logo in different attacks such as JPEG compression, cropping, and 3x3 median filtering.

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“…In [7], a robust blind watermarking technique for embedding two watermarks into a host image was proposed. Watermarks are combined and then embedded into a host image.…”

Section: Related Effortsmentioning

confidence: 99%

Logo embedding in grayscale images using turbo product codes

Maeeni

Kalbat

Al-Ahmad

2015

2015 International Conference on Information and Communication Technology Research (ICTRC)

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“…The eight low-frequency coefficients excluding the dc component of the 8x8 DCT blocks are used to hide the watermark bits [10,11,12]. In the embedding, first, the signature is 1-D Walsh encoded and then the encoded signature's elements are inserted into the DCT blocks coefficients of the host image.…”

Section: Dct Blocks Algorithm Techniquementioning

confidence: 99%

1-D Walsh coded watermarking technique for colour images using the Y channel

Ahmed

Al-Ahmad

Gaydecki

2011

2011 IEEE GCC Conference and Exhibition (GCC)

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In this paper a new blind technique using one dimensional Walsh coding to improve the robustness of image watermarking is presented. The proposed technique inserts the binary bits of handwritten signatures in the DCT blocks of the Y channel of the digital color image. The 1-D Walsh coding can be applied either horizontally or vertically. The work was carried out using the horizontal 1-D Walsh coding. Results prove that the use of Walsh coding has improved robustness against JPEG compression.

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“…The test also, covered the use of different scaling factors for the watermarking and their effect on the fidelity of the watermarked image. Investigation is carried out to assess the fidelity of the images by using the Peak Signal to Noise Ratio (PSNR) and the Mean Structural Similarity (SSIM) [14]. Table1 shows the PSNR and SSIM values of different images using DCT b locks with Walsh coding.…”

Section: Figure 3 Six Different Test Images and Their Watermarked Vementioning

confidence: 99%

“…Figure 4 shows samples of so me images that have been used as host images in the watermarking algorith m. It is clear that the distortion caused by the new watermarking scheme is invisib le. The fidelity of the images is assessed by using the Peak Signal to No ise Ratio (PSNR) and the Mean Structural Similarity (SSIM) [14]. It is clear that the algorithm is mo re robust with Walsh coding.…”

Section: Figure 3 Six Different Test Images and Their Watermarked Vementioning

confidence: 99%

1-D Walsh Coding With DCT Block Watermarking Technique of Colour Images Using Y Channel

Ahmed

Al-Ahmad²,

Gaydecki³

2012

AJSP

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In this paper a new blind technique using one dimensional Walsh coding to improve the robustness of image watermarking is presented. The proposed technique inserts the binary bits of handwritten signatures in the DCT blocks of the Y channel of the digital colour image. Watermarking algorith m wh ich uses 1-D Walsh coding to embed mobile phone digits in images captured by the phone camera is also introduced. The 1-D Walsh coding can be applied either horizontally or vertically. The results presented here were obtained for horizontal 1-D Walsh coding. These results prove that the use of Walsh coding has improved robustness against JPEG co mpression.

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A New Blind Image Watermarking Technique for Dual Watermarks Using Low-Frequency Band DCT Coefficients

Cited by 12 publications

References 3 publications

Logo embedding in grayscale images using turbo product codes

Logo embedding in grayscale images using turbo product codes

1-D Walsh coded watermarking technique for colour images using the Y channel

1-D Walsh Coding With DCT Block Watermarking Technique of Colour Images Using Y Channel

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