Today's and tomorrow's retrieval practice in the audiovisual archive
Proceedings of the ACM International Conference on Image and Video Retrieval
On the sampling of web images for learning visual concept classifiers
Proceedings of the ACM International Conference on Image and Video Retrieval
Utilizing related samples to learn complex queries in interactive concept-based video search
Proceedings of the ACM International Conference on Image and Video Retrieval
Semantic video indexing by fusing explicit and implicit context spaces
Proceedings of the international conference on Multimedia
Fast feature selection and training for AdaBoost-based concept detection with large scale datasets
Proceedings of the international conference on Multimedia
Automatic video genre categorization and event detection techniques on large-scale sports data
Proceedings of the 2010 Conference of the Center for Advanced Studies on Collaborative Research
A visualized communication system using cross-media semantic association
MMM'11 Proceedings of the 17th international conference on Advances in multimedia modeling - Volume Part II
Spatial codebooks for image categorization
Proceedings of the 1st ACM International Conference on Multimedia Retrieval
Effectiveness of video ontology in query by example approach
AMT'11 Proceedings of the 7th international conference on Active media technology
A pseudo relevance feedback based cross domain video concept detection
Proceedings of the Third International Conference on Internet Multimedia Computing and Service
On the spatial extents of SIFT descriptors for visual concept detection
ICVS'11 Proceedings of the 8th international conference on Computer vision systems
On the pooling of positive examples with ontology for visual concept learning
MM '11 Proceedings of the 19th ACM international conference on Multimedia
Learning "verb-object" concepts for semantic image annotation
MM '11 Proceedings of the 19th ACM international conference on Multimedia
Known-item video search via query-to-modality mapping
MM '11 Proceedings of the 19th ACM international conference on Multimedia
Learning concept bundles for video search with complex queries
MM '11 Proceedings of the 19th ACM international conference on Multimedia
A Generic Approach for Systematic Analysis of Sports Videos
ACM Transactions on Intelligent Systems and Technology (TIST)
Collaborative video reindexing via matrix factorization
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Power-law distribution in encoded MFCC frames of speech, music, and environmental sound signals
Proceedings of the 21st international conference companion on World Wide Web
Multimodal video concept detection via bag of auditory words and multiple kernel learning
MMM'12 Proceedings of the 18th international conference on Advances in Multimedia Modeling
Visual vocabulary optimization with spatial context for image annotation and classification
MMM'12 Proceedings of the 18th international conference on Advances in Multimedia Modeling
Multi-modal solution for unconstrained news story retrieval
MMM'12 Proceedings of the 18th international conference on Advances in Multimedia Modeling
Novelty detection in wildlife scenes through semantic context modelling
Pattern Recognition
Fusing concept detection and geo context for visual search
Proceedings of the 2nd ACM International Conference on Multimedia Retrieval
Assistive tagging: A survey of multimedia tagging with human-computer joint exploration
ACM Computing Surveys (CSUR)
Simulating the future of concept-based video retrieval under improved detector performance
Multimedia Tools and Applications
Segmentation-based multi-class semantic object detection
Multimedia Tools and Applications
Bag of spatio-visual words for context inference in scene classification
Pattern Recognition
Hamming selection pruned sets (HSPS) for efficient multi-label video classification
PRICAI'12 Proceedings of the 12th Pacific Rim international conference on Trends in Artificial Intelligence
Learning hybrid part filters for scene recognition
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part V
Recognizing complex events using large margin joint low-level event model
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part IV
Accelerating visual categorization with the GPU
ECCV'10 Proceedings of the 11th European conference on Trends and Topics in Computer Vision - Volume Part II
Multimedia event detection using segment-based approach for motion feature
PCM'12 Proceedings of the 13th Pacific-Rim conference on Advances in Multimedia Information Processing
Correlation-Based Ranking for Large-Scale Video Concept Retrieval
International Journal of Multimedia Data Engineering & Management
Constructing and Utilizing Video Ontology for Accurate and Fast Retrieval
International Journal of Multimedia Data Engineering & Management
Searching informative concept banks for video event detection
Proceedings of the 3rd ACM conference on International conference on multimedia retrieval
Near-lossless semantic video summarization and its applications to video analysis
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
SmartVisionApp: A framework for computer vision applications on mobile devices
Expert Systems with Applications: An International Journal
We are not equally negative: fine-grained labeling for multimedia event detection
Proceedings of the 21st ACM international conference on Multimedia
Rule-Based Semantic Concept Classification from Large-Scale Video Collections
International Journal of Multimedia Data Engineering & Management
Object class detection: A survey
ACM Computing Surveys (CSUR)
International Journal of Multimedia Data Engineering & Management
Unsupervised approximate-semantic vocabulary learning for human action and video classification
Pattern Recognition Letters
The uncertain representation ranking framework for concept-based video retrieval
Information Retrieval
Semantic context based refinement for news video annotation
Multimedia Tools and Applications
Multimedia Tools and Applications
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Based on the local keypoints extracted as salient image patches, an image can be described as a ??bag-of-visual-words (BoW)?? and this representation has appeared promising for object and scene classification. The performance of BoW features in semantic concept detection for large-scale multimedia databases is subject to various representation choices. In this paper, we conduct a comprehensive study on the representation choices of BoW, including vocabulary size, weighting scheme, stop word removal, feature selection, spatial information, and visual bi-gram. We offer practical insights in how to optimize the performance of BoW by choosing appropriate representation choices. For the weighting scheme, we elaborate a soft-weighting method to assess the significance of a visual word to an image. We experimentally show that the soft-weighting outperforms other popular weighting schemes such as TF-IDF with a large margin. Our extensive experiments on TRECVID data sets also indicate that BoW feature alone, with appropriate representation choices, already produces highly competitive concept detection performance. Based on our empirical findings, we further apply our method to detect a large set of 374 semantic concepts. The detectors, as well as the features and detection scores on several recent benchmark data sets, are released to the multimedia community.