Copyright Protection for E-Government Document Images

Rosiyadi, Didi; Horng, Shi–Jinn; Fan, Pingzhi; Wang, Xian; Khan, M. K.; Pan, Yi

doi:10.1109/mmul.2011.41

Cited by 84 publications

(19 citation statements)

References 7 publications

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“…The simulation results shows that the scheme is robust for dissimilar types of attacks at suitable visual quality of the watermarked image. Rosiyadi et al [21] projected a hybrid watermarking method for the copyright protection which uses DCT and SVD. In this scheme, DCT is exploited on the original image employing the zigzag space-filling curve for the DCT coefficients and afterward SVD is applied on the DCT coefficients.…”

Section: Related Workmentioning

confidence: 99%

A Hybrid Secure watermarking technique in Telemedicine

Swaraja¹

2017

IJET

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Abstract-For healthcare applications, a hybrid multiple watermarking has been projected in this paper. For authentication and identity purpose, the projected scheme makes use of two watermarks, one in the form of text watermark which includes diagnostic information of the patient and the other image watermark includes the hospital logo. In order to improve the robustness performance of the scheme DWT, DCT and SVD is applied while inserting the multiple watermarks to reduce the noise effects on the watermarked image. The security of the text and image watermark is enhanced by using Arithmetic coding and Arnold transform respectively before inserting into the original medical image. Various experiments have been carried out on different medical imaging modalities to estimate the performance of the projected scheme in terms of imperceptibility, robustness and security even after different types of attacks. Keyword -Discrete wavelet transforms, Discrete cosine transform, Singular value decomposition, Authentication, Telemedicine.I. INTRODUCTION Telemedicine eradicates distance barrier and affords entrée to medical services obtainable at far-away places. It permits transmission of medical data from one position to another and facilitates handy and accurate interfaces among patients and medical staff. Circulation of medical images enforces significant prerequisite that the medical images were not adapted by illegal users. This precondition is called preserving integrity of medical images. On the contrary, transmission of medical image and patient data autonomously through commercial networks guides to more cost and transmission time [1]. Watermarking is employed to deal with the above two concerns. Digital watermarking is the current, admired and competent scheme for the safety of multimedia data. In this scheme watermark is embedded into the digital data to protect it from unauthorized use. Digital watermarking has diverse applications such as copyright protection, copy protection, tamper detection, broadcast monitoring, content archiving, fingerprinting, healthcare, cyber watermarking, digital cinema and content authentication. Medical image watermarking has various benefits such as accumulation of storage space and bandwidth necessities, privacy of patient data [2,3]. Additionally, medical image watermarking also assists in reducing medical identity thefts which are the serious safety issues reported in a variety of investigations [2,3,4]. The major anxiety of digital image watermarking schemes is that the watermark should not influence the visual quality of the original medical image and it should be robust towards dissimilar signal processing attacks.Based on the domain used for hiding data within an image, watermarking techniques are organized into two categories, namely, spatial domain and frequency domain. Information is straightforwardly inserted into original image in spatial domain watermarking techniques [5][6][7][8]. In frequency domain techniques [9][10][11], information is inserted into transformed orig...

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Section: Related Workmentioning

confidence: 99%

A Hybrid Secure watermarking technique in Telemedicine

Swaraja¹

2017

IJET

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“…The wavelet based watermarking is also compatible with the new image standard JPEG 2000. Further, performance improvement of the watermarking methods using hybrid watermarking has been proposed by some researchers [1, 4, 5, 8, 9, 16, 20, 23, 28-31, 34, 36, 39] Rosiyadi et al [28] proposed a hybrid watermarking method based on DCT and SVD for the copyright protection. In this embedding process, DCT is applied on the host image using the zigzag space-filling curve (SFC) for the DCT coefficients and subsequently the SVD is applied on the DCT coefficients.…”

Section: Introductionmentioning

confidence: 99%

Hybrid technique for robust and imperceptible multiple watermarking using medical images

Singh

Dave

Mohan

2015

Multimed Tools Appl

157

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This paper presents a secure multiple watermarking method based on discrete wavelet transform (DWT), discrete cosine transforms (DCT) and singular value decomposition (SVD). For identity authentication purpose, the proposed method uses medical image as the image watermark, and the personal and medical record of the patient as the text watermark. In the embedding process, the cover medical image is decomposed up to second level of DWT coefficients. Low frequency band (LL) of the host medical image is transformed by DCT and SVD. The watermark medical image is also transformed by DCT and SVD. The singular value of watermark image is embedded in the singular value of the host image. Furthermore, the text watermark is embedding at the second level of the high frequency band (HH) of the host image. In order to enhance the security of the text watermark, encryption is applied to the ASCII representation of the text watermark before embedding. Results are obtained by varying the gain factor, size of the text watermark, and medical image modalities. Experimental results are provided to illustrate that the proposed method is able to withstand a variety of signal processing attacks such as JPEG, Gaussian, Salt-and-Pepper, Histogram equalization etc. The performance of the proposed technique is also evaluated by using the benchmark software Checkmark and the technique is found to be robust against the Checkmark attacks such as Collage, Trimmed Mean, Hard and Soft Thresholding, Wavelet Compression, Mid Point, Projective, and Wrap etc. Multimed Tools Appl

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“…The host image luminance masking is used and the mask of each sub-band area is transformed into frequency domain. Subsequently, the watermark image is embedded by modifying the singular values of DCT-transformed host image with singular values of mask coefficients of host image and the control parameter of DCT-transformed watermark image using GA. Singh et al [9] proposed a robust hybrid watermarking technique using DWT, DCT, and SVD. First, the host image into first decomposed by DWT and the Low frequency band (LL) and watermark image are transformed using DCT and SVD.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2016

SIPIJ

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Copyright Protection for E-Government Document Images

Cited by 84 publications

References 7 publications

A Hybrid Secure watermarking technique in Telemedicine

A Hybrid Secure watermarking technique in Telemedicine

Hybrid technique for robust and imperceptible multiple watermarking using medical images

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