Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.420931
Title: Achieving semantic coupling in the domain of high-dimensional video indexing application
Authors: Mittal, A. 
Cheong, L.-F. 
Keywords: Dimensionality reduction
Elemental characterization
Fast training
Multimedia indexing
Neural networks
Optimum weight assignment
Relevant features evaluation
Support vector machines
Issue Date: 2001
Source: Mittal, A., Cheong, L.-F. (2001). Achieving semantic coupling in the domain of high-dimensional video indexing application. Proceedings of SPIE - The International Society for Optical Engineering 4305 : 97-107. ScholarBank@NUS Repository. https://doi.org/10.1117/12.420931
Abstract: A typical user of multimedia indexing system has to deal with low-level details like assignment of weights to different features and selection of threshold. To employ the system effectively and efficiently, one has to be versatile in similarity measures used, and other implementation issues. In order to overcome these shortcomings, researchers in the field of content-based retrieval are making efforts to develop semantic features. However, most of the work done in semantic features indexing build a priori model of a video's structure that is based on domain knowledge; and they are focused on narrow domains like extracting interesting shots from 'soccer', finding 'Tennis' shots etc. In this paper, an adequately domain-independent approach is presented where local features can characterize multimedia data using Neural Networks (ANN) and Support Vector Machines (SVM). In our previous work, we have shown that classification in content-based retrieval requires non-linear mapping of feature space. This can normally be accomplished by ANN and SVM. However, they inherently lack the capability to deal with meaningful feature evaluation and large dimensional feature space in the sense that they are inaccurate and slow. These defects can be overcome by employing meaningful feature selection on the basis of discriminative capacity of a feature. The experiments on database consisting of real video sequences show that the speed and accuracy of SVM can be improved substantially using this technique, while execution time can be substantially reduced for ANN. The comparison also shows that improved SVM turns out to be a better choice than ANN. Finally, it is shown that generalization in learning is not affected by reducing the dimension of the feature space by our method.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/43227
ISSN: 0277786X
DOI: 10.1117/12.420931
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

4
checked on Dec 6, 2017

WEB OF SCIENCETM
Citations

1
checked on Nov 20, 2017

Page view(s)

37
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.