A new robust and fragile watermarking scheme for images captured by mobile phone cameras

Jassim, T.; Abd‐Alhameed, Raed A.; Al-Ahmad, Hussain

doi:10.1109/iccspa.2013.6487230

Cited by 10 publications

(4 citation statements)

References 5 publications

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“…Similar cross-media signal transmission includes the print-scan process and print-cam process. Existing research on print-scan or print-cam robust image watermarking can be divided into three categories: watermark pattern-based methods [29][30][31][32][33][34][35], Fourier domain-based methods [36][37][38][39] and multidomain-based methods [40][41][42]. Although the ideas of these methods are valuable for studying screen-cam robust watermarking algorithms, these methods are not applicable for the screen-cam process [43].…”

Section: Introductionmentioning

confidence: 99%

Joint Image Encryption and Screen-Cam Robust Two Watermarking Scheme

Chen

Ren

Zhu

et al. 2021

Sensors

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This paper proposes a joint encryption and screen-cam robust watermarking scheme. This method combines the advantages of smartphone, encryption and watermarking technologies, thereby achieving watermark extraction with a smartphone, partial decryption and tracking leakage from sneak shots. We design a dual watermarking algorithm to achieve watermark detection from both encrypted and decrypted images. First, a watermark is embedded in the discrete Fourier transform (DFT) domain to enable leakage tracking. Then, a second watermark is generated based on QR (Quick response) code encoding and inverse DFT to achieve high watermark capacity and error correction ability, where the secret key for decryption is included in the watermark message. By hiding this message carrying the watermark for the encrypted image in the changes caused by embedding the first watermark, we can improve imperceptibility and will not affect the effectiveness of the proposed scheme. Finally, to enhance the robustness of watermark after encryption, a chaotic mapping-based segment encryption algorithm is proposed. In the process of watermark detection, to cope with perspective correction, a frame locating based algorithm is employed to achieve watermark synchronization from a recaptured picture of the encrypted image. Considering the severe quality degradation, we use a noise component and local statistic feature-based method to extract the message bits. The experimental results show that the proposed scheme is secure, and highly robust, to screen-cam the process for both before and after decryption. Additionally, after decryption, the proposed scheme also has high robustness against common image processing attacks.

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Section: Introductionmentioning

confidence: 99%

Joint Image Encryption and Screen-Cam Robust Two Watermarking Scheme

Chen

Ren

Zhu

et al. 2021

Sensors

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“…Fourier-domain based methods embed watermark messages in the magnitude spectrum of discrete Fourier transform (DFT) [15]- [18] or Fourier-Mellin transform domain [19], [20], which is the log-polar mapping (LPM) of the DFT magnitude spectrum. Multi-domain-based methods modulate the coefficients of the wavelet domain to embed watermark message combined with another domain-based method to achieve synchronization [21]- [23]. However, global watermarks are restricted to the desynchronization caused by stitching and cropping attack [8], [24].…”

Section: Introductionmentioning

confidence: 99%

Screen-Cam Robust and Blind Watermarking for Tile Satellite Images

et al. 2020

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To achieve watermark synchronization from an image with perspective distortion is a challenge. This paper proposes a screen-cam robust and blind watermarking scheme for tile satellite images, which means we do not need any user interaction or additional information in watermark detection. To achieve this, at the watermark embedding side, we divide tiles into synchronization tiles and message tiles, and propose a discrete Fourier transform (DFT) based embedding method to cope with the quality degradation caused by screen-cam process. At the extraction side, based on the idea of template matching, we first use a synchronization response index to estimate an appropriate scale level and positions of embedded synchronization watermarks from the noise component, which is estimated by Wiener filter. Then, we propose verification, selection, and precise locations methods to ensure the effectiveness and accuracy of synchronization detection results. After that, we can extract the regions of message tiles. Finally, we extract watermark message based on the local max value from the DFT domain of the noise component. Experimental results demonstrate the validity of the proposed scheme against common attacks and screen-cam attack with a tripod as well as handhold shooting. INDEX TERMS Screen-cam process, robust watermark, tile satellite images, blind detection, synchronization.

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“…Robust watermarking is used to measure the ability of the watermark to resist common image processing operations like cropping, scaling, filtering, additive noise and JPEG compression too provides ownership claims. Whereas fragile watermarking is used to authenticate multimedia content which is to identify and report all feasible tampering in the watermarked digital media [6]. Many research works show that combining two are more transformation techniques to improve the quality of the watermark.…”

Section: Introductionmentioning

confidence: 99%

Copyright Protection for Digital Colour Images Using Dual Watermarking Technique by Applying Improved DWT, DCT and SVD

A.¹

2016

JEEE

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The main objective of the majority of research in Digital Image Watermarking technique is to improve the robustness of attacks.In this paper, a new algorithm has been proposed based on Discrete Wavelet Transform, Discrete Cosine Transformation in association with Singular Value Decomposition for embedding the dual watermark which provides an efficient copyright protection.Here the primary watermark is embedded into the secondary watermark and the resultant image is used as a watermark for the host or cover image. The primary and secondary watermarks are retrieved back by using an efficient watermark retrieving algorithm. During the processes of embedding the scaling factor is varied to improve the quality of watermarked image. In this proposed algorithm the watermarked image is extracted back with same quality, high peak signal to noise ratio and normalized correlation coefficients. The quality of the extracted watermarks is authenticated using Peak Signal to Noise Ratio and Normalized Correlation Coefficient. Compared with previous methods the proposed algorithm has a significantly higher robustness against various geometrical and removal attacks.Nearly 28 attacks like Cropping, Rotating at various angles, Sharpening, Motion Blur, rescaling, resizing and adding noise like Salt and Pepper noise, Gaussian noise, Spackle noise, filters like average filter, median filters are attempted. Even after attempted all such attacks both the watermarks are retrieved back with the same quality and high normalized correlation coefficient.

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A new robust and fragile watermarking scheme for images captured by mobile phone cameras

Cited by 10 publications

References 5 publications

Joint Image Encryption and Screen-Cam Robust Two Watermarking Scheme

Joint Image Encryption and Screen-Cam Robust Two Watermarking Scheme

Screen-Cam Robust and Blind Watermarking for Tile Satellite Images

Copyright Protection for Digital Colour Images Using Dual Watermarking Technique by Applying Improved DWT, DCT and SVD

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