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Number of hours
Lectures : 18.0
Laboratory works : 12.0
ECTS : 3.0
To present the basics in compression and media security technologies such as watermarking, media content integrity verification, conditional access and scrambling. To establish a link between common requirements and state-of-the-art techniques. To overview media security standards. The course will be illustrated focusing on images and/or video content.
Contact François CAYRE
Compression: decorrelation and energy compaction, popular transforms (KL, DCT, DWT), quantization, source coding and bit allocation. Application to JPEG, JPEG2000 and MPEG2/MPEG4.
Watermarking: a communication problem, robustness and capacity issues, popular coding techniques (SS-based, QIM-based). Resynchronization issues and application to still images. Introduction to data-hiding security.