Reversible image authentication scheme with blind content reconstruction based on compressed sensing

Melendez-Melendez, G.; Cumplido, René

doi:10.1016/j.jestch.2021.101080

Cited by 5 publications

(1 citation statement)

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“…Reference [14] stated that the image watermarking technique aims at high imperceptibility of the embedded watermark with minimal distortion in the watermarked image. In imperceptibility, the original image and the watermarked image will be evaluated using two image quality assessment metrics commonly used in previous studies [7], [12], [15], [16], [17], namely, Peak Signal to Noise Ratio (PSNR) and Structural Similarity Index Measure (SSIM). Peak Signal to Noise Ratio (PSNR) is a classic metric to estimate the similarity between two images [18].…”

Section: Imperceptibility Analysismentioning

confidence: 99%

Analysis of Embedding Locations in the Subband Frequency DCT on Scanned Images

Hidayati

Budiman

Wang

2023

Data Science: J. of Computing and Appl. Informatics

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Uploading an identity card as an image for the account verification process or transactions online can be a threat to application users. Identity card theft can be carried out by irresponsible persons if the application can be hacked. Therefore, protection of the image is required for authentication. In this study, the proposed technique is watermarking. A watermark in the form of a binary image will be embedded into the image as ownership using a Discrete Cosine Transform. The Discrete Cosine Transform works in the frequency domain. The location of the embedding of different watermarks was analysed in each 8×8 DCT block. The results of the analysis to assess the imperceptibility of original images and watermarked images using PSNR (Peak Signal to Noise Ratio) and SSIM (Structural Similarity Index Measure), while assessing the watermark robustness embedded using NCC (Normalized Cross Correlation). The results show PSNR (Peak Signal to Noise Ratio) ≥ 54 dB with a watermark strength of 0,1 and an average SSIM (Structural Similarity Index Measure) ≥ 0,9 on 4 scanned images in BMP format with a resolution of 100 DPI. A good watermark embedding is done on the green component at middle frequencies to maintain a balance between imperceptibility and robustness. In contrast, the red component at low frequency is vulnerable to attacks in the form of brightness +20 and contrast +50 with an average NCC (Normalized Cross Correlation) ≤ 0,85.

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