Implementation of a real-time digital watermarking process for broadcast monitoring on a TriMedia VLIW processor

Strycker, Lieven De; Termont, P.; Vandewege, Jan; Haitsma, JA Jaap; Kalker, A.A.C.M.; Maes, Mjjj-B; Depovere, Gfg

doi:10.1049/ip-vis:20000580

Cited by 51 publications

(1 citation statement)

References 2 publications

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“…Strycker et. al [23] proposed the implementation of a real-time spatial domain watermark embedder and detector on a Trimedia TM-1000 VLIW processor. The authors in [24] proposed a watermark-based protocol for the document management in large enterprises.…”

Section: Review Of Related Work and Limitationsmentioning

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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Section: Review Of Related Work and Limitationsmentioning

confidence: 99%

Dual purpose FWT domain spread spectrum image watermarking in real time

Maity

Kundu

Maity³

2009

Computers & Electrical Engineering

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A watermarking scheme without reference images for broadcast monitoring

Tachibana¹,

Fujiyoshi²,

Kiya³

2004

Electron Comm Jpn Pt III

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SUMMARYIn this paper, to automate broadcast monitoring, which is typified by the verification of the transmission of the material ID code of a commercial message (CM) or program, the authors propose a watermarking scheme without reference images, which does not require a reference image when the watermark sequence is extracted. By embedding a watermark sequence formed by using standard normal random numbers after discretizing the embeddingtarget coefficients in the DCT domain, the proposed technique makes a reference image unnecessary when the watermark sequence is extracted. In addition, since the proposed technique enables a watermark image having the desired image quality (PSNR) to be achieved for any image, it has the advantage that the image quality can always be maintained regardless of the image. Therefore, the same procedure can always be used to embed the watermark sequence in a full-motion video image without obtaining parameters for each image and to extract that watermark sequence without using a reference image. The authors used simulations to verify that an image quality of at least 56 dB, which is the HDTV digital VTR guideline, can be maintained even in the watermarked image, that the watermark sequence can be extracted without using a reference image, and that the proposed technique is robust with respect to MPEG.

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