A semi-fragile watermarking scheme for authenticating audio signal based on dual-tree complex wavelet transform and discrete cosine transform

Fan, Ming-Quan; Li, Peipei; Wang, Hongxia; Li, Hengjian

doi:10.1080/00207160.2013.805752

Cited by 20 publications

(8 citation statements)

References 13 publications

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“…Robustness→detection probability (%) Figure 11: Triangles for the effect of capacity on other watermarking criteria. [3] 0.4780 28.08 33.33-50 309 LSF [7,10] 0.5127 30.32 33.33-50 298 DT-CWT [11] 0.1367 31.36 15.66-976.56 351 Genetic algorithm [12] 0.4513 29.30 N/A 411 watermarking techniques. Apparently, the proposed technique was induced more delay to embedding process due to the checking loop.…”

Section: Capacity→(pbs)mentioning

confidence: 99%

Semifragile Speech Watermarking Based on Least Significant Bit Replacement of Line Spectral Frequencies

Nematollahi¹,

Vorakulpipat²,

Gamboa-Rosales³

2017

Mathematical Problems in Engineering

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There are various techniques for speech watermarking based on modifying the linear prediction coefficients (LPCs); however, the estimated and modified LPCs vary from each other even without attacks. Because line spectral frequency (LSF) has less sensitivity to watermarking than LPC, watermark bits are embedded into the maximum number of LSFs by applying the least significant bit replacement (LSBR) method. To reduce the differences between estimated and modified LPCs, a checking loop is added to minimize the watermark extraction error. Experimental results show that the proposed semifragile speech watermarking method can provide high imperceptibility and that any manipulation of the watermark signal destroys the watermark bits since manipulation changes it to a random stream of bits.

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Section: Capacity→(pbs)mentioning

confidence: 99%

Semifragile Speech Watermarking Based on Least Significant Bit Replacement of Line Spectral Frequencies

Nematollahi¹,

Vorakulpipat²,

Gamboa-Rosales³

2017

Mathematical Problems in Engineering

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“…Discrete cosine transform is an important method which simplifies Fourier transform and is an important transform in digital image processing (16)(17)(18). A lot of important image algorithms are based on the discrete cosine transform.…”

Section: Sub-block 3d Discrete Cosine Transformmentioning

confidence: 99%

Robust Watermarking Technique Used in Medical Volume Data

Han¹,

Li²,

Zong³

2017

West Indian Med J

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Medical volume data are always concerned with the breach of confidentiality. A robust watermarking technique, resisting conventional attack, is proposed in this paper. The watermarking technique is a zero-watermarking. Firstly, the original watermarking image scrambling opts to use a novel Chebyshev chaotic neural network. Secondly, the medical volume data are split into 64 non-overlapping sub-volume data, each of which is done by sub-block threedimensional (3D) discrete cosine transform so as to obtain the direct-current components. Thirdly, the 64 direct-current components are subjected to standardized processing. Finally, the 64-bit feature vector is generated by the perceptual hashing, which is used for producing zerowatermarking.Therefore, the watermarking technique has a good robustness resisting conventional attacks. The results show that the watermarking technique used in medical volume data is effective. So the watermarking technique is suitable for medical volume data concerned with privacy protection, safety and management.

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“…According to Eqs. (12) and (13), the threshold t lies between t min and t max, and the relationship can be represented as t min ≤ t ≤ t max (14) We apply the same threshold t to N different test audio frames. To define the error S in the detection process, we first define the bool function as follows:…”

Section: Detection Of Malicious Tamperingmentioning

confidence: 99%