Evaluating Bag-of-Visual-Words Representations in Scene (2008)
Jun Yang, Alexander G. Hauptmann, Yu-gang Jiang, Chong-wah Ngo
Classification
7. Active Concept Learning for Image Retrieval in Dynamic Databases (2008)
Maneesh Singh, Xiaofeng Ren, Yuri Boykov, Jing Zhong, Shuicheng Yan, Mingjing Li, ...
Nebojsa Jojic, Brendan Frey, Anitha Kannan. Pages 34–41. See the CD-ROM for a video of epitome learning and the epitome webpage for further examples, comparisons and software.
Hierarchical Hidden Markov Model for Rushes Structuring and Indexing (2008)
Chong-wah Ngo, Zailiang Pan, Xiaoyong Wei
Abstract. Rushes footage are considered as cheap gold mine with the potential for reuse in broadcasting and filmmaking industries. However, it is difficult to mine the “gold ” from the rushes...
EMD-Based Video Clip Retrieval by Many-to-Many Matching (2008)
Abstract. This paper presents a new approach for video clip retrieval based on Earth Mover’s Distance (EMD). Instead of imposing one-to-one matching constraint as in [11, 14], our approach allows...
c ○ World Scientific Publishing Company RECENT ADVANCES IN CONTENT-BASED VIDEO ANALYSIS (2008)
Chong-wah Ngo, Ting-chuen Pong, Hong-jiang Zhang
In this paper, we present major issues in video parsing, abstraction, retrieval and semantic analysis. We discuss the success, the difficulties and the expectations in these areas. In addition, we...
Chong-wah Ngo, Ting-chuen Pong, Hong-jiang Zhang, C. W. Ngo
In this paper, we present a new framework to automatically group similar shots into one scene, where a scene is generally referred to as a group of shots taken place in the same site. Two major...
Chong-wah Ngo, Yu-gang Jiang, Xiaoyong Wei, Feng Wang, Wanlei Zhao, Hung-khoon Tan, ...
In this paper, we present our approaches and results of high-level feature extraction and automatic video search in TRECVID-2007. In high-level feature extraction, our main focus is to explore the...
Motivation: VIREO-374: LSCOM Semantic Concept Detectors Using Local Keypoint Features (2008)
Yu-gang Jiang, Chong-wah Ngo, Jun Yang
[Printable PDF version of this webpage] Semantic concept detection aims to rank video shots in large scale video corpus according to the presence of a specific concept, such as ``sports'',...
DOI 10.1007/s11042-006-0085-4 OM-based video shot retrieval by one-to-one matching (2007)
Yuxin Peng, Chong-wah Ngo, Jianguo Xiao, Y. Peng, J. Xiao
Abstract This paper proposes a new approach for shot-based retrieval by optimal matching (OM), which provides an effective mechanism for the similarity measure and ranking of shots by one-to-one...
Gestalt-based feature similarity measure in trademark database (2006)
Hui Jiang, Chong-wah Ngo, Hung-khoon Tan
Motivated by the studies in Gestalt principle, this paper describes a novel approach on the adaptive selection of visual features for trademark retrieval. We consider five kinds of visual saliencies:...
Keyframe retrieval by keypoints: Can point-to-point matching help (2006)
Wanlei Zhao, Yu-gang Jiang, Chong-wah Ngo
Abstract. Bag-of-words representation with visual keypoints has recently emerged as an attractive approach for video search. In this paper, we study the degree of improvement when point-to-point...
Yu-gang Jiang, Xiaoyong Wei, Chong-wah Ngo, Hung-khoon Tan, Wanlei Zhao, Xiao Wu
Local interest points (LIPs) and their features have been shown to obtain surprisingly good results in object detection and recognition. Its effectiveness and scalability, however, have not been...
Fast Tracking of Near-Duplicate Keyframes in Broadcast Domain with Transitivity Propagation (2006)
The identification of near-duplicate keyframe (NDK) pairs is a useful task for a variety of applications such as news story threading and content-based video search. In this paper, we propose a novel...
Chong-wah Ngo, Zailiang Pan, Xiaoyong Wei, Xiao Wu, Hung-khoon Tan, Wanlei Zhao
This paper describes our experimental results on shot boundary detection (SB), low-level feature extraction (LLF), and BBC Rushes exploration (BR) at TRECVID 2005. The approaches presented in this...
Video summarization and scene detection by graph modeling (2005)
Chong-wah Ngo, Yu-fei Ma, Hong-jiang Zhang
Abstract—In this paper, we propose a unified approach for video summarization based on the analysis of video structures and video highlights. Two major components in our approach are scene modeling...
Deformable Geometry Model Matching by Topological and Geometric Signatures (2004)
In this paper, we present a novel method for efficient 3D model comparison. The method matches highly deformed models by comparing topological and geometric features. First, we propose...
Deformable Geometry Model Matching Using Bipartite Graph (2004)
In this paper, we present a novel method for efficient 3D model comparison. The method is designed to match highly deformed models through capturing two types of information. First, we propose a...
Detection of documentary scene changes by audio-visual fusion (2004)
Atulya Velivelli, Chong-wah Ngo, Thomas S. Huang
Abstract. The concept of a documentary scene was inferred from the audio-visual characteristics of certain documentary videos. It was observed that the amount of information from the visual component...
Automatic Video Summarization by Graph Modeling (2003)
Chong-wah Ngo, Yu-fei Ma, Hong-jiang Zhang
We propose a unified approach for summarization based on the analysis of video structures and video highlights. Our approach emphasizes both the content balance and perceptual quality of a summary....
Motion analysis and segmentation through spatio-temporal slices processing (2003)
Chong-wah Ngo, Ting-chuen Pong, Hong-jiang Zhang
This paper presents new approaches in characterizing and segmenting the content of video. These approaches are developed based upon the pattern analysis of spatio-temporal slices. While tradi-tional...
Motion analysis and segmentation through spatio-temporal slices processing (2003)
Chong-wah Ngo, Ting-chuen Pong, Hong-jiang Zhang, Senior Member
Abstract—This paper presents new approaches in characterizing and segmenting the content of video. These approaches are developed based upon the pattern analysis of spatio-temporal slices. While...
On clustering and retrieval of video shots through temporal slices analysis (2002)
Chong-wah Ngo, Ting-chuen Pong, Hong-jiang Zhang, Senior Member
Abstract—Based on the analysis of temporal slices, we propose novel approaches for clustering and retrieval of video shots. Temporal slices are a set of two–dimensional (2-D) images extracted...
Detection of slide transition for topic indexing (2002)
This paper presents an automatic and novel approach in detecting the transitions of slides for video sequences of technical lectures. Our approach adopts a foreground vs background segmentation...
On clustering and retrieval of video shots (2001)
Clustering of video data is an important issue in video abstraction, browsing and retrieval. In this paper, we propose a two-level hierarchical clustering approach by aggregating shots with similar...
Integrating Color and Spatial Features for Content-based Video Retrieval (2001)
Tong Lin, Chong-wah Ngo, Hong-jiang Zhang, Qing-yun Shi
In this paper, we present a novel scheme for content-based video retrieval by exploring the spatio-temporal information. A shot with significant content changes can be segmented into several subshots...
On clustering and retrieval of video shots (2001)
Clustering of video data is an important issue in video abstraction, browsing and retrieval. In this paper, we propose a two-level hierarchical clustering approach by aggregating shots with similar...
Exploiting Image Indexing Techniques in DCT domain (1998)
Chong-wah Ngo, Ting-chuen Pong, T. Chin
This paper is concerned with the indexing and retrieval of images based on features extracted directly from the JPEG discrete cosine transform (DCT) domain. We examine possible ways of manipulating...
Experiments on Routing, Filtering and Chinese Text Retrieval in TREC-5 (1996)
We describes our experiments in the routing, filtering and Chinese text retrieval. We based our routing and filtering experiments on our discriminant project algorithm. The algorithm sequentially...