Teaching and learning as multimedia authoring: the classroom 2000 project
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
Topic-based browsing within a digital library using keyphrases
Proceedings of the fourth ACM conference on Digital libraries
Towards robust features for classifying audio in the CueVideo system
MULTIMEDIA '99 Proceedings of the seventh ACM international conference on Multimedia (Part 1)
Passive capture and structuring of lectures
MULTIMEDIA '99 Proceedings of the seventh ACM international conference on Multimedia (Part 1)
MAESTRO: conductor of multimedia analysis technologies
Communications of the ACM
Phonetic confusion matrix based spoken document retrieval
SIGIR '00 Proceedings of the 23rd annual international ACM SIGIR conference on Research and development in information retrieval
A Maximum-Likelihood Approach to Visual Event Classification
ECCV '96 Proceedings of the 4th European Conference on Computer Vision-Volume II - Volume II
SlideFinder: A Tool for Browsing Presentation Graphics Using Content-Based Retrieval
CBAIVL '99 Proceedings of the IEEE Workshop on Content-Based Access of Image and Video Libraries
Query Expansion for Imperfect Speech: Applications in Distributed Learning
CBAIVL '00 Proceedings of the IEEE Workshop on Content-based Access of Image and Video Libraries (CBAIVL'00)
CBAIVL '00 Proceedings of the IEEE Workshop on Content-based Access of Image and Video Libraries (CBAIVL'00)
Indexing Colored Surfaces in Images
ICPR '96 Proceedings of the International Conference on Pattern Recognition (ICPR '96) Volume III-Volume 7276 - Volume 7276
Selecting One Among the Many: A Simple Network Implementing Shifts in Selective Visual Attention
Selecting One Among the Many: A Simple Network Implementing Shifts in Selective Visual Attention
Learning video browsing behavior and its application in the generation of video previews
MULTIMEDIA '01 Proceedings of the ninth ACM international conference on Multimedia
Personalizing video recorders using multimedia processing and integration
MULTIMEDIA '01 Proceedings of the ninth ACM international conference on Multimedia
Movie Event Detection by Using Audio Visual Information
PCM '01 Proceedings of the Second IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Extending a DBMS to Support Content-Based Video Retrieval: A Formula 1 Case Study
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
Hierarchical topical segmentation in instructional films based on cinematic expressive functions
MULTIMEDIA '03 Proceedings of the eleventh ACM international conference on Multimedia
Real time repeated video sequence identification
Computer Vision and Image Understanding
Video-based event recognition: activity representation and probabilistic recognition methods
Computer Vision and Image Understanding - Special issue on event detection in video
Maximum entropy model-based baseball highlight detection and classification
Computer Vision and Image Understanding - Special issue on event detection in video
Towards a Smarter Meeting Record--Capture and Access of Meetings Revisited
Multimedia Tools and Applications
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Question-driven segmentation of lecture speech text: Towards intelligent e-learning systems
Journal of the American Society for Information Science and Technology
Migrating legacy video lectures to multimedia learning objects
Software—Practice & Experience
Detecting Significant Events in Lecture Video using Supervised Machine Learning
Proceedings of the 2009 conference on Artificial Intelligence in Education: Building Learning Systems that Care: From Knowledge Representation to Affective Modelling
Journal of Visual Communication and Image Representation
Spatial-temporal semantic grouping of instructional video content
CIVR'03 Proceedings of the 2nd international conference on Image and video retrieval
Classroom video assessment and retrieval via multiple instance learning
AIED'11 Proceedings of the 15th international conference on Artificial intelligence in education
A comprehensive study of visual event computing
Multimedia Tools and Applications
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The detection of events is essential to high-level semantic querying of video databases. It is also a very challenging problem requiring the detection and integration of evidence for an event available in multiple information modalities, such as audio, video and language. This paper focuses on the detection of specific types of events, namely, topic of discussion events that occur in classroom/lecture environments. Specifically, we present a query-driven approach to the detection of topic of discussion events with foils used in a lecture as a way to convey a topic. In particular, we use the image content of foils to detect visual events in which the foil is displayed and captured in the video stream. The recognition of a foil in video frames exploits the color and spatial layout of regions on foils using a technique called region hashing. Next, we use the textual phrases listed on a foil as an indication of a topic, and detect topical audio events as places in the audio track where the best evidence for the topical phrases was heard. Finally, we use a probabilistic model of event likelihood to combine the results of visual and audio avent detection that exploits their time cooccurrence. The resulting identification of topical events is evaluated in the domain of classroom lectures and talks.