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Statistical Approach for Image Retrieval

Since the emergence of Internet, a gigantic volume of images have been uploaded into the Internet from time to time. Relying on the traditional text-based search approach to locate the required images could no longer meet the diverse needs of users. This persistent trend has demanded a more sophisti...

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Main Author: Khor, Siak Wang
Format: Thesis
Language:English
English
Published: 2007
Online Access:http://psasir.upm.edu.my/id/eprint/441/1/1600481.pdf
http://psasir.upm.edu.my/id/eprint/441/
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spelling my.upm.eprints.4412013-05-27T06:48:22Z http://psasir.upm.edu.my/id/eprint/441/ Statistical Approach for Image Retrieval Khor, Siak Wang Since the emergence of Internet, a gigantic volume of images have been uploaded into the Internet from time to time. Relying on the traditional text-based search approach to locate the required images could no longer meet the diverse needs of users. This persistent trend has demanded a more sophisticated search algorithm on these images. One of the popular and common approaches for image search is Content-based Image Retrieval or CBIR for short, i.e. retrieval of images based on their visual contents such as shapes, colours, textures etc. Of all the visual contents identifiable from an image, colour is considered to be the commonest visual attribute that aids in image retrieval. Works on colour-based image retrieval systems are largely based on the use of colour histogram, which has been noted to suffer from a major drawback, i.e. absence of spatial information, which is also an important requirement for an accurate retrieval result. In this thesis, a novel method based on the modified generic framework of CBIR is proposed. This technique, formally known as Image Retrieval Using Statistical-based Approach is based on the idea of grouping pixels with similar colour codes within an image. From these grouped pixels, they are sorted in descending order of pixel count, which intuitively identifies dominant colours within an image. Statistical information, i.e. means and standard deviations will then be derived from these sorted groups. The extracted statistical information will be stored in both text files and matrixes, which will be used to aid in the image retrieval process. The system has also included some adjustable parameters, such as window size, CC percentage similarity, which can be used to improve retrieval accuracy. This statistical-based approach has been tested on the standard UCID image collection where it has shown improved results, with an average precision value of about 70% as compared to an approximate value of 25% using the histogram-based approach, in term of retrieval accuracy. 2007 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/441/1/1600481.pdf Khor, Siak Wang (2007) Statistical Approach for Image Retrieval. PhD thesis, Universiti Putra Malaysia. English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Since the emergence of Internet, a gigantic volume of images have been uploaded into the Internet from time to time. Relying on the traditional text-based search approach to locate the required images could no longer meet the diverse needs of users. This persistent trend has demanded a more sophisticated search algorithm on these images. One of the popular and common approaches for image search is Content-based Image Retrieval or CBIR for short, i.e. retrieval of images based on their visual contents such as shapes, colours, textures etc. Of all the visual contents identifiable from an image, colour is considered to be the commonest visual attribute that aids in image retrieval. Works on colour-based image retrieval systems are largely based on the use of colour histogram, which has been noted to suffer from a major drawback, i.e. absence of spatial information, which is also an important requirement for an accurate retrieval result. In this thesis, a novel method based on the modified generic framework of CBIR is proposed. This technique, formally known as Image Retrieval Using Statistical-based Approach is based on the idea of grouping pixels with similar colour codes within an image. From these grouped pixels, they are sorted in descending order of pixel count, which intuitively identifies dominant colours within an image. Statistical information, i.e. means and standard deviations will then be derived from these sorted groups. The extracted statistical information will be stored in both text files and matrixes, which will be used to aid in the image retrieval process. The system has also included some adjustable parameters, such as window size, CC percentage similarity, which can be used to improve retrieval accuracy. This statistical-based approach has been tested on the standard UCID image collection where it has shown improved results, with an average precision value of about 70% as compared to an approximate value of 25% using the histogram-based approach, in term of retrieval accuracy.
format Thesis
author Khor, Siak Wang
spellingShingle Khor, Siak Wang
Statistical Approach for Image Retrieval
author_facet Khor, Siak Wang
author_sort Khor, Siak Wang
title Statistical Approach for Image Retrieval
title_short Statistical Approach for Image Retrieval
title_full Statistical Approach for Image Retrieval
title_fullStr Statistical Approach for Image Retrieval
title_full_unstemmed Statistical Approach for Image Retrieval
title_sort statistical approach for image retrieval
publishDate 2007
url http://psasir.upm.edu.my/id/eprint/441/1/1600481.pdf
http://psasir.upm.edu.my/id/eprint/441/
_version_ 1643821824344064000
score 13.211869

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