Turning Web Lectures into User Generated Adaptive Multimedia

2009 ◽  
Author(s):  
Robert Mertens ◽  
Markus Ketterl ◽  
Oliver Vornberger
Keyword(s):  
Adaptive Multimedia

Adaptive multimedia multi-party communication in ad hoc environments

2004 ◽  
Author(s):  
P.M. Ruiz ◽  
J.A. Sanchez ◽  
E. Garcia ◽  
A.E. Gomez-Skarmeta ◽  
J.A. Botia ◽  
...  
Keyword(s):  
Ad Hoc ◽  
Adaptive Multimedia

scholarly journals Adaptive multimedia data hiding and watermarking

2021 ◽  
Author(s):  
Kan Li
Keyword(s):  
Data Hiding ◽  
Spread Spectrum ◽  
Optimization Algorithms ◽  
Wiener Filter ◽  
Lagrangian Function ◽  
Multimedia Data ◽  
Digital Information ◽  
Look Up Table ◽  
Uniform Quantization ◽  
Adaptive Multimedia

Watermarking is a technique of hiding a message about a work of media within that work itself in· the purpose of protecting the digital information against illegal duplication and manipulation. The objectives of this study are to analyze the robustness and distortion performance of watermarking system and to explore watermarking schemes which balance the robustness-distortion tradeoff optimally. In this thesis, We present a detector algorithm to adaptively extract spread spectrum watermark by filtering the watermarked images with Wiener filter. Two optimization algorithms for quantization watermarking are proposed. First one optimizes uniform quantization based look-up table embedding which minimizes watermarking distortion. Secondly, we analyze the robustness-distortion tradeoff and formulate the robustness-distortion tradeoff into a Lagrangian function. Hence optimal quantizers for watermarking subject to given robustness or fidelity constraint are achieved.

Adaptive multimedia computing

2005 ◽  
Vol 75 (3) ◽  
pp. 235-236
Author(s):  
Steven Guan ◽  
Richard Lai
Keyword(s):  
Multimedia Computing ◽  
Adaptive Multimedia

Expert-Novice Differences and Adaptive Multimedia

2006 ◽  
pp. 206-223
Author(s):  
Slava Kalyuga
Keyword(s):  
Diagnostic Methods ◽  
Cognitive Resources ◽  
Adaptive Procedure ◽  
Theoretical Frameworks ◽  
Multimedia Presentations ◽  
Multimedia Design ◽  
Reversal Effect ◽  
User Expertise ◽  
Expert Novice ◽  
Adaptive Multimedia

This chapter provides an overview of theoretical frameworks and empirical evidence for the design of adaptive multimedia that is tailored to individual levels of user expertise to optimize cognitive resources available for learning. Recent studies indicate that multimedia design principles that benefit low-knowledge users may disadvantage more experienced ones due to increase in cognitive load required for integration of presented information with available knowledge base. The major implication for multimedia design is the need to tailor instructional formats to individual levels of expertise. The suggested adaptive procedure is based on empirically-established interactions between levels of user proficiency and formats of multimedia presentations (the expertise reversal effect), and on real-time monitoring of users’ expertise using rapid cognitive diagnostic methods.

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