Improved image watermarking using pixel averaging and unbiased retrieval

Pramoun, Thitiporn; Amornraksa, Thumrongrat

doi:10.1109/iscit.2009.5341100

Cited by 5 publications

(11 citation statements)

References 9 publications

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“…Our proposed method is applied to the same image watermarking algorithm as proposed in [7]. That is, to embed a watermark image into a color host image, in the embedding process, the watermark bits w(i,j)∈{1,-1} are the first permuted by using XOR operation with a pseudo-random bit stream generated form a key-based stream cipher.…”

Section: The Previous Watermarking Methodsmentioning

confidence: 99%

“…is obtained from the pixel averaging technique, which can be represented by To obtain the optimal result, it was suggested in [7] that the luminance block size used for pixel averaging should be fixed to 256×256 pixels, i.e. a = 8.…”

Section: The Previous Watermarking Methodsmentioning

confidence: 99%

“…Their method showed the better performance in term of NC values, and robust against the various kind of attacks. Recently, T. Pramoun et al [7] proposed a different method used to solve the above deficiency by removing two pixels having the maximum and minimum values from the original pixel prediction process. Obviously, their method demonstrated the small improvement over the previous one.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose an alternative method to further improve the watermarking performance in [7]. First, the image averaging technique is applied to the host and watermarked images in the embedding and extraction processes, respectively, in order to reduce the variation of pixel values.…”

Section: Introductionmentioning

confidence: 99%

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Improved Image Watermarking Using Image Averaging Technique and Prediction of Tuned Watermarked Pixels

Peungpanich

Mettripun

Amornraksa

2010

2010 2nd International Conference on Information Engineering and Computer Science

Self Cite

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This paper proposes an improving method for the pixelwise based image watermarking by using image averaging technique and prediction of tuned watermarked pixels. To reduce the error in the original pixel prediction process caused by the high different values of neighbor pixels in the watermarked image, the technique of image averaging is applied to host image in the embedding process, and the watermarked image in the extraction process. Furthermore, a tuning technique is implemented to reduce the prediction error in the original pixel prediction process. The experimental results show the improved performance in term NC at equivalent quality of watermarked images, compared to the previous methods. The robustness against various types of attack of the proposed method is also evaluate and compared.

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Section: The Previous Watermarking Methodsmentioning

confidence: 99%

Section: The Previous Watermarking Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved Image Watermarking Using Image Averaging Technique and Prediction of Tuned Watermarked Pixels

Peungpanich

Mettripun

Amornraksa

2010

2010 2nd International Conference on Information Engineering and Computer Science

Self Cite

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“…Pixel averaging does have its caveats [28], whilst removing noise, we may also lose some of the intrinsic print defects [29,30,31]. Print defects in currency are important during investigation when discriminating between individual printer.…”

Section: A Featuresmentioning

confidence: 99%

Currency security and forensics: a survey

Chambers

Yan

Garhwal

et al. 2014

Multimed Tools Appl

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Abstract-By its definition, the word 'currency' refers to an agreed medium for exchange, a nation's currency is the formal medium enforced by the elected governing entity. Throughout history, issuers have faced one common threat: counterfeiting. Despite technological advancements, overcoming counterfeit production remains a distant future. Scientific determination of authenticity requires a deep understanding of the raw materials and manufacturing processes involved. This survey serves as a synthesis of the current literature to understand the technology and the mechanics involved in currency manufacture and security, whilst identifying gaps in the current literature. Ultimately, a robust currency is desired.

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Enhancing fragility of zero-based text watermarking utilizing effective characters list

Saba

Bashardoost

Kolivand

et al. 2019

Multimed Tools Appl

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Text is an important medium used for sharing information worldwide. For a text document, digital watermarking is an efficient way for copyright protection, authentication, tamper proofing, to name but a few. In this paper, a zero-based watermarking approach is proposed for document authentication and tamper detection. To enhance the fragility of watermark, the proposed text watermarking approach can be comfortably utilizedbased on the Effective Characters List (ECL) for watermark generation. The ECL method is generated for English text zero-watermarking by maintaining the contents of the original document and constructing the watermark by formulating the smooth transition between the selected characters in the documents. The evaluation of the proposed watermarking approach is based on three famous watermarking attacks including deletion, insertion, and reordering with an accuracy of 80.76%, 80.36%, and 88.1%, respectively. For a fair evaluation, a comparison is put forth with a recent zero-based watermarking method-clearly showing that the proposed method outperforms existing with greater accuracy.

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Improved image watermarking using pixel averaging and unbiased retrieval

Cited by 5 publications

References 9 publications

Improved Image Watermarking Using Image Averaging Technique and Prediction of Tuned Watermarked Pixels

Improved Image Watermarking Using Image Averaging Technique and Prediction of Tuned Watermarked Pixels

Currency security and forensics: a survey

Enhancing fragility of zero-based text watermarking utilizing effective characters list

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