Improving image annotation via useful representative feature selection

NCUIR > School of Management at National Central University > Graduate Institute of Information Management > journal & Dissertation > Item 987654321/29661

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29661

Title:	Improving image annotation via useful representative feature selection
Authors:	Lin,WC;Oakes,M;Tait,J;Tsai,CF
Contributors:	資訊管理研究所
Keywords:	VIDEO INDEXING TECHNIQUES;PATTERN-RECOGNITION;MATHEMATICAL-THEORY;RETRIEVAL;COMMUNICATION;FRAMEWORK;PICTURES
Date:	2009
Issue Date:	2010-06-29 20:37:37 (UTC+8)
Publisher:	中央大學
Abstract:	This paper describes the automatic assignment of images into classes described by individual keywords provided with the Corel data set. Automatic image annotation technology aims to provide an efficient and effective searching environment for users to query their images more easily, but current image retrieval systems are still not very accurate when assigning images into a large number of keyword classes. Noisy features are the main problem, causing some keywords never to be assigned to their correct images. This paper focuses on improving image classification, first by selection of features to characterise each image, and then the selection of the most suitable feature vectors as training data. A Pixel Density filter (PDfilter) and Information Gain (IG) are proposed to perform these respective tasks. We filter out the noisy features so that groups of images can be represented by their most important values. The experiments use hue, saturation and value (HSV) colour feature space to categorise images according to one of 190 concrete keywords or subsets of these. The study shows that feature selection through the PDfilter and IG can improve the problem of spurious similarity.
Relation:	COGNITIVE PROCESSING
Appears in Collections:	[Graduate Institute of Information Management] journal & Dissertation

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