Improved watermark detection reliability using filtering before correlation

Depovere, G.; Kalker, Ton; Linnartz, Jean-Paul M. G.

doi:10.1109/icip.1998.723517

Cited by 74 publications

(49 citation statements)

References 1 publication

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“…Our estimates of the required false positive rate are about one in 10 11 or 10 12 distinct frames. Recent models for predicting the false positive rate can be found in [10] and [11].…”

Section: B False Positives Ratementioning

confidence: 99%

Copy protection for DVD video

Bloom¹,

et al. 1999

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Abstract--The prospect of consumer digital versatile disk (DVD) recorders highlights the challenge of protecting copyrighted video content from piracy. We describe the copy protection system currently under consideration for DVD. The copy protection system broadly tries to prevent illicit copies from being made from either the analog or digital I/O channels of DVD recorders. An analog copy protection system is utilized to protect the NTSC/PAL output channel by preventing copies to VHS. The digital transmission of content is protected by a robust encryption protocol between two communicating devices. Watermarking is used to encode copy control information retrievable from both digital and analog signals. Hence, such embedded signals avoid the need for meta-data to be carried in either the digital or analog domains. Finally, the copy protection system provides the capability for one-generation copying.We discuss some proposed solutions and some of the implementation issues that are being addressed.

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“…Our estimates of the required false positive rate are about one in 10 11 or 10 12 distinct frames. Recent models for predicting the false positive rate can be found in [10] and [11].…”

Section: B False Positives Ratementioning

confidence: 99%

Copy protection for DVD video

Bloom¹,

et al. 1999

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“…In SS watermarking, the detection reliability for the binary valued watermark data depends on the decision variable t i obtained by evaluating the zero-lag spatial cross-covariance function between the image I w and each code pattern P i [38]. The decision variable t i can be mathematically represented as follows:…”

Section: Spread Spectrum Watermark Decodingmentioning

confidence: 99%

Dual purpose FWT domain spread spectrum image watermarking in real time

Maity

Kundu

Maity³

2009

Computers & Electrical Engineering

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Spread spectrum (SS) watermarking for multimedia signal becomes appealing due to its high robustness attribute and is used widely for various applications. Some of these applications essentially demand development of low cost algorithms so that they can be used for real time services such as broadcast monitoring, security in communication etc. In recent time one popular non-conventional application of digital watermarking becomes promising that assesses blindly the QoS (quality of services) of the multimedia services which is expected to be offered by the future generation mobile radio network. Majority of the existing SS watermarking schemes suffer from high computation cost and complexity leading to the difficulty for realtime implementation and limits their usage for the above mentioned applications. This paper proposes Fast Walsh Transform (FWT) based SS image watermarking scheme that serves the dual purposes of authentication in data transmission as well as QoS assessment for digital media through dynamic estimation of the wireless channel condition. Fast Walsh transform offers low computation cost for implementation, smaller change in image (multimedia signal) information due to data embedding and ease of hardware realization. VLSI implementation using Field Programmable Gate Array (FPGA) has been developed to make it suitable for real time implementation.

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“…Otherwise, S further checks the status ofthe merchandize associated with PK, and also rejects the request ifthe merchandize turns out to have been registered. If everything goes fme, S extracts the corresponding K from the entry and computes: (6) Then S adds (Cerc; PK, PKS) to the entry so that the merchandize is marked as registered, and sends the encrypted activation key, AK, back to the program. When the program running on the smart card successfully receives AK from S, it stores AK in the smart card and completes the transaction.…”

Section: Merchandize Registrationmentioning

confidence: 99%

“…In the content-protection schemes [l, 2, 3, 4, 5] that make use of the digital watermarking technology [6,7,8,9, 10], a watermark uniquely .associated with each transaction is inserted into the copy of the digital content to be sold. In order to achieve the goals of secure and fairness, the seiler and the buyer are required to perform the watermark insertion collaboratively using cryptographic techniques when carrying out the transaction.…”

Section: Introductionmentioning

confidence: 99%

A Content-Protection Scheme for Multi-Layered Reselling Structures

Tsai

Lei

2004

Security and Protection in Information Processing Systems

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Abstract:Since the idea of digital watermarks was proposed, various watermarking schemes have been developed to protect digital contents in electronic transactions. However, most schemes limit themselves to the simplified buyerseiler model that can be applied to only a small number of cases rather than common seenarios in real Iife. In this paper, a more praetieal watermarking scheme is proposed to proteet digital contents in real-world transactions using PKI (Public-Key Infrastructure), The proposed scheme is eonsidered more praetical in the sense that one or more reselling agents may exist between buyers and the original seiler, and the seiler can package the merchandise in advanee without the involvement of buyers. The packaged merehandize can henee be made publiely aceessible (e.g, on top of an open shelf) for the purpose of demonstration and cireulates in the market . The proposed seheme also preserves the anonymity of the buyers while guaranteeing that the distributor of any illegal eopy will be unambiguously identified.

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Improved watermark detection reliability using filtering before correlation

Cited by 74 publications

References 1 publication

Copy protection for DVD video

Copy protection for DVD video

Dual purpose FWT domain spread spectrum image watermarking in real time

A Content-Protection Scheme for Multi-Layered Reselling Structures

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