DCT and DWT-Based Image Watermarking by Using Subsampling
ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
Dual purpose FWT domain spread spectrum image watermarking in real time
Computers and Electrical Engineering
Efficient hardware architecture of 2D-scan-based wavelet watermarking for image and video
Computer Standards & Interfaces
Fragile watermarking using finite field trigonometrical transforms
Image Communication
Image quality monitoring using spread spectrum watermarking
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Perceptually adaptive spread transform image watermarking scheme using Hadamard transform
Information Sciences: an International Journal
Visual quality assessment algorithms: what does the future hold?
Multimedia Tools and Applications
Blind PSNR estimation of video sequences, through non-uniform quantization watermarking
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
Novel wavelet-based QIM data hiding technique for tamper detection and correction of digital images
Journal of Visual Communication and Image Representation
A novel technique for the blind assessment of image degradation due to compression
Proceedings of the 27th Conference on Image and Vision Computing New Zealand
Wireless Personal Communications: An International Journal
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This paper presents a novel method to blindly estimate the quality of a multimedia communication link by means of an unconventional use of digital fragile watermarking. Data hiding by digital watermarking is usually employed for multimedia copyright protection, authenticity verification, or similar purposes. However, watermarking is here adopted as a technique to provide a blind measure of the quality of service in multimedia communications. Specifically, a fragile watermark is hidden in an MPEG-like host data video transport stream using a spread-spectrum approach. Like a tracing signal, the watermark tracks the data, where it is embedded, since both the watermark and the host data follow the same communication link. The estimation of the tracing watermark allows dynamically evaluating the effective quality of the provided video services. This depends on the whole physical layer, including the employed video co/decoder. The performed method is based on the evaluation of the mean-square-error between the estimated and the actual watermarks. The proposed technique has been designed for application to wireless multimedia communication systems. According to the results obtained, the sensitivity of the detected tracing watermark on the quality of service (QoS) indices provides for some useful capabilities for analyzing future mobile Universal Mobile Telecommunications System (UMTS) services.