An Improved Image Watermarking by Modifying Selected DWT-DCT Coefficients

Ernawan, Ferda; Ariatmanto, Dhani; Firdaus, Ahmad

doi:10.1109/access.2021.3067245

Cited by 42 publications

(19 citation statements)

References 29 publications

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“…The suggested method was also assessed for imperceptibility of watermarked pictures. According to the results, the suggested technique displayed very low BER value of the retrieved watermark even after subjecting to different attacks [1].…”

Section: Literature Survey Ferda Ernawan Et Al (Feb 2021)mentioning

confidence: 94%

An Improved Hybrid DCT-DWT Blind Watermarking Technique for Securing Multimedia Images

Hema

2022

Preprint

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People are capable of manipulating and copying digital images. Protection and security must be given to the right property from piracy and illegal copies. To safeguard the intellectual property of digital images digital watermarking is used as a solution. Watermarking technique is prevalent due to an effective copyright protection method i.e., only the rightful owner can identify the signature that is embedded in a digital document. In this paper, a blind watermarking scheme is used which is dependent on the image content of certain specific DWT-DCT coefficients. The use of generalized Gaussian distributions helps in modelling the DCT-DWT coefficients of the Source image. The suggested system attained optimal PSNR, MSE and SSIM values and numerous attacks are resisted by an embedded watermark in the image watermarked as per the results of the experiment. Furthermore, the suggested system depicts far more robustness against numerous image processing attacks for example, scaling to 0.25 & 0.50, Cropping, and various types of noise attacks. Experimental results and numerical values of parameters confirms that the hybrid DCT-DWT blind watermarking technique is relatively efficient and also justifies the theoretical analysis.

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Section: Literature Survey Ferda Ernawan Et Al (Feb 2021)mentioning

confidence: 94%

An Improved Hybrid DCT-DWT Blind Watermarking Technique for Securing Multimedia Images

Hema

2022

Preprint

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“…Hence, integrating multiple techniques into one is a cumbersome task. When compared to other transformations, such as DFT (or its fast version FFT) and DWT, the main merit of DCT-based watermarking methods is their resilience to image compression attacks [ 12 , 41 ]. Compression is one of the most widely used modifications within the whole image processing space; thus, withstanding it is a must for a robust watermarking strategy.…”

Section: Related Workmentioning

confidence: 99%

A dual watermarking scheme for identity protection

Sharma

Zou

Fang

2022

Multimed Tools Appl

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A novel dual watermarking scheme with potential applications in identity protection, media integrity maintenance and copyright protection in both electronic and printed media is presented. The proposed watermarking scheme uses the owner’s signature and fingerprint as watermarks through which the ownership and validity of the media can be proven and kept intact. To begin with, the proposed watermarking scheme is implemented on continuous-tone/greyscale images, and later extended to images achieved via multitoning, an advanced version of halftoning-based printing. The proposed watermark embedding is robust and imperceptible. Experimental simulations and evaluations of the proposed method show excellent results from both objective and subjective view-points.

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“…For C (3,4),C(4, 3) and C (5,6),C (6,5) the two pairs of coefficients are directly exchanged if the condition is not satisfied; for C (3,5),C(4, 4),C(5, 3) and C(4, 6),C(5, 5),C (6,4) the four pairs of coefficients , if they do not satisfy the condition, are sorted according to the size relationship and assigned to each coefficient in turn; for C (3,6),C(4, 5),C(5, 4),C(6, 3) the three pairs of coefficients, if the condition is not satisfied, are modified according to Eq. (8).…”

Section: Watermark Embedding Processmentioning

confidence: 99%

“…And in the transform domain, where pixel values are transformed into frequency coefficients and then is used to embed, commonly used techniques are Discrete Cosine Transform(DCT) [2,3], Discrete Wavelet Transform(DWT) [4], Discrete Fourier Transform(DFT) [5], there are some improvements on these basic techniques such as Redundant Discrete Wavelet Transformation(RDWT) [6], Quaternion Discrete Fourier transform(QDFT) [7], etc. Sometimes multiple frequency techniques are used in combination such as DCT-DWT [8,9], Dual Tree Complex Wavelet Transform-Discrete Cosine Transform(DTCWT-DCT ) [10] etc. The screen photography process, which is the process of capturing a screen with a mobile phone and generating an image, undergoes analog-to-digital and digital-to-analog conversion attacks [11] and also causes many distortions.…”

Section: Introductionmentioning

confidence: 99%

Robust Watermarking of Screen-Photography Based on JND

Gu¹,

Han²,

Sun³

et al. 2022

Computers, Materials &Amp; Continua

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With the popularity of smartphones, it is often easy to maliciously leak important information by taking pictures of the phone. Robust watermarking that can resist screen photography can achieve the protection of information. Since the screen photo process can cause some irreversible distortion, the currently available screen photo watermarks do not consider the image content well and the visual quality is not very high. Therefore, this paper proposes a new screen-photography robust watermark. In terms of embedding region selection, the intensity-based Scale-invariant feature transform (SIFT) algorithm used for the construction of feature regions based on the density of feature points, which can make it more focused on the key content of the image; in terms of embedding strength, the Just noticeable difference (JND) model is applied to limit the intensity of the watermark embedding according to the luminance and texture of the picture to balance robustness and invisibility; after embedding watermark, the coefficients in the neighborhood are again adjusted with optimal constraints to improve the accuracy of watermark extraction. After experiments, it is shown that the method we proposed can improve the correct rate of watermark extraction, the quality of the visual aspect of the watermarked picture is also improved.

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An Improved Image Watermarking by Modifying Selected DWT-DCT Coefficients

Cited by 42 publications

References 29 publications

An Improved Hybrid DCT-DWT Blind Watermarking Technique for Securing Multimedia Images

An Improved Hybrid DCT-DWT Blind Watermarking Technique for Securing Multimedia Images

A dual watermarking scheme for identity protection

Robust Watermarking of Screen-Photography Based on JND

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