Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Fast Watermarking of MPEG-1/2 Streams Using Compressed-Domain Perceptual Embedding and a Generalized Correlator Detector | EURASIP Journal on Applied Signal Processing 2004 8 1088-1106 2004 Hindawi Publishing Corporation Fast Watermarking of MPEG-1 2 Streams Using Compressed-Domain Perceptual Embedding and a Generalized Correlator Detector Dimitrios Simitopoulos Information Processing Laboratory Electrical and Computer Engineering Department Aristotle University of Thessaloniki 54006 Thessaloniki Greece Informatics and Telematics Institute Centre for Research and Technology Hellas 1st Km Thermi-Panorama Road 57 001 Thermi-Thessaloniki Greece Email dsim@ Sotirios A. Tsaftaris Electrical and Computer Engineering Department Northwestern University 2145 Sheridan Road Evanston IL 60208 USA Email s-tsaftaris@ Nikolaos V. Boulgouris The Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto ON Canada M5S 3G4 Email nikos@ Alexia Briassouli Beckman Institute Department of Electrical and Computer Engineering University ofIllinios at Urbana-Champaign Urbana IL 61801 USA Email briassou@ Michael G. Strintzis Information Processing Laboratory Electrical and Computer Engineering Department Aristotle University of Thessaloniki 54006 Thessaloniki Greece Email strintzi@ Informatics and Telematics Institute Centre for Research and Technology Hellas 1st Km Thermi-Panorama Road 57 001 Thermi-Thessaloniki Greece Received 9 January 2003 Revised 18 September 2003 Recommended for Publication by Ioannis Pitas A novel technique is proposed for watermarking of MPEG-1 and MPEG-2 compressed video streams. The proposed scheme is applied directly in the domain of MPEG-1 system streams and MPEG-2 program streams multiplexed streams . Perceptual models are used during the embedding process in order to avoid degradation of the video quality. The watermark is detected without the use of the original video sequence. A modified correlation-based detector is introduced that applies nonlinear preprocessing before correlation. .
