A Dual Image Watermarking Scheme Based on WPT And Chaotic Encryption for Medical Data Protection

Hadjer, A.; Ismail, Boukli Hacene

doi:10.1109/ispa54004.2022.9786355

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Patient data protection is very important for medical imaging, such as ultrasound and magnetic resonance. Hadjer et al [9] proposed a dual-image watermarking scheme to embed watermarks and electronic patient records (EPRs) into medical images. The watermark image is encrypted using chaotic logistic map methods to increase robustness and security.…”

Section: Related Workmentioning

confidence: 99%

“…The watermark image is encrypted using chaotic logistic map methods to increase robustness and security. PSNR, normalized correlation (NC) and bit error-rate measurement metrics were evaluated for the proposed algorithm; the results showed that dual-image watermarking produces higher robustness and imperceptibility values [9]. Zhou et al [10] proposed a reversible watermarking scheme to protect medical data in colour images.…”

Section: Related Workmentioning

confidence: 99%

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A Semi-Fragile, Inner-Outer Block-Based Watermarking Method Using Scrambling and Frequency Domain Algorithms

et al. 2023

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Image watermarking is most often used to prove that an image belongs to someone and to make sure that the image is the same as was originally produced. The type of watermarking used for the detection of originality and tampering is known as authentication-type watermarking. In this paper, a blind semi-fragile authentication watermarking method is introduced. Although the main concern in this paper is authenticating the image, watermarking for proving ownership is additionally implemented. The method considers the image as two main parts: an inner part and an outer part. The inner and outer parts are divided into non-overlapping blocks. The block size of the inner and outer part are different. The outer blocks have a greater area than the inner blocks so that their watermark-holding capacity is greater, providing enough robustness for semi-fragility. The method is semi-fragile and the watermarked image is authenticated despite the JPEG being compressed to 75% quality. The embedded watermark also survives innocent types of image operations, such as intensity adjustment, histogram equalization and gamma correction. Semi-fragile and selectively fragile authentication is valuable and in high demand specifically because it survives these innocent image operations while detecting ill-intentioned tampering. In this work, we embed a binary watermark into the inner and outer parts of images using a scrambling algorithm, discrete wavelet transform (DWT) and discrete cosine transform (DCT) in the blocks. The proposed methodology has high image quality after watermarking, with a PSNR value of 40.577 , and high quality is also achieved after JPEG compression. The embedding process provides acceptable image quality after tamper attacks, including JPEG compression, Gaussian noise, average filtering, and scaling attacks with PSNR values greater than 29. Experimental results obtained show that the proposed semi-fragile watermarking algorithm is more robust, secure and resistant than other algorithms in the literature.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%