Watermarking of colour images in the DCT domain using Y channel

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

doi:10.1109/aiccsa.2009.5069457

Cited by 17 publications

(13 citation statements)

References 5 publications

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“…make it difficult to extract the exact watermark information. Use of YCbCr color space in watermarking enhances the invisibility of watermark in the cover image and stronger robustness in comparison to other existing techniques [6].…”

Section: Introductionmentioning

confidence: 99%

Robust DWT based color image watermarking scheme

Patvardhan

Kumar

Lakshmi

2015

2015 39th National Systems Conference (NSC)

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This paper presents a robust Discrete Wavelet Transform (DWT) based color image watermarking technique using YCbCr color model. Watermark text data is transformed into QR code for enhanced security and a varying length text can be watermarked in an efficient manner. The proposed method uses diagonal components from DWT of the cover and watermark image. A high retrieval rate of watermarks is obtained with an appropriate embedding strength. It has high resistance to most watermarking attacks and retrieves the exact watermark information even from low quality watermarked images.

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Section: Introductionmentioning

confidence: 99%

Robust DWT based color image watermarking scheme

Patvardhan

Kumar

Lakshmi

2015

2015 39th National Systems Conference (NSC)

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“…In the proposed algorithm, Walsh functions of eight sequences are used to encode the watermark before embedding it in the luminance component (Y) of the host colour image [8]. The method is blind and does not require the original image to recover the watermark.…”

Section: Introductionmentioning

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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“…Since transform domain schemes have better performances in terms of transparency and robustness than spatial domain methods, researchers usually embed watermarking signal into transform domain coefficients at present. For transform domain image watermarking algorithms, first the cover image or image block is performed by DCT [3,5,[8][9][10][11][12][13][14][15][16][17] or discrete wavelet transform (DWT) [2,6] or singular value decomposition (SVD) [1,18]. And then, the watermarking signal bits are embedded in the frequency domain coefficients by designed watermarking embedding method.…”

Section: Introductionmentioning

confidence: 99%

“…If the host image is RGB color image, on the one hand, the watermarking algorithms can embed directly watermarking signal into each component or selected component [3][4][5]. On the other hand, the embedding schemes perform color model transformation from RGB color space to YCbCr or YUV color space firstly and then usually embed watermarking information into Y component [6][7][8][9][10][11][12][13][14][15][16]. Since transform domain schemes have better performances in terms of transparency and robustness than spatial domain methods, researchers usually embed watermarking signal into transform domain coefficients at present.…”

Section: Introductionmentioning

confidence: 99%

“…For copyright protection problem of digital multimedia, copyright owner usually embeds a watermarking signal into original cover multimedia to certify its copyright. Generally, traditional watermarking technologies can be classified into three categories according to cover multimedia type, namely audio watermarking [1], video watermarking [2] and image watermarking [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], respectively.…”

Section: Introductionmentioning

confidence: 99%

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An Improved DCT Based Color Image Watermarking Scheme

Xiong¹

2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

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Abstract. In this paper, an improved blind color image watermarking algorithm based on relationship embedding strategy is proposed. Firstly, the original RGB color image is transformed into YCbCr color space. Secondly, the Y channel of YCbCr color space is divided blocks sized 8×8, and then perform two dimensional discrete cosine transform on each block. Finally, embed binary watermarking signal by changing one pair selected middle-frequency sub-band coefficient's relationship. Experimental results show that the proposed algorithm has very good transparency and robustness against the common image processing. Compared with other similar algorithms, it has better performance.

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Watermarking of colour images in the DCT domain using Y channel

Cited by 17 publications

References 5 publications

Robust DWT based color image watermarking scheme

Robust DWT based color image watermarking scheme

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

An Improved DCT Based Color Image Watermarking Scheme

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