Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia

Band ratio combination has been proven to be one of the most useful image processing methods for lithological discrimination, as discussed by many researchers in the past. In this study, bands from Landsat 5 TM were used to generate different ratio combinations to discriminate the different litholog...

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Main Authors:	Simon, Norbert, Che Aziz Ali, Kamal Roslan Mohamed, Kamilia Sharir
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2016
Online Access:	http://journalarticle.ukm.my/9868/ http://journalarticle.ukm.my/9868/ http://journalarticle.ukm.my/9868/1/01_Norbert_Simon.pdf

id	ukm-9868
recordtype	eprints
spelling	ukm-98682016-12-14T06:51:06Z http://journalarticle.ukm.my/9868/ Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia Simon, Norbert Che Aziz Ali, Kamal Roslan Mohamed, Kamilia Sharir, Band ratio combination has been proven to be one of the most useful image processing methods for lithological discrimination, as discussed by many researchers in the past. In this study, bands from Landsat 5 TM were used to generate different ratio combinations to discriminate the different lithologies of two islands located at the southern end of the Langkawi archipelago, specifically the Dayang Bunting and Tuba Islands. Both islands comprise similar lithological units – namely, limestone/marble (Permian & Silurian-Ordovician), granite and alluvium. There are two rock formations that are limestone/marble dominated. The first is known as the Chuping Formation, which consists of limestone/marble and the other is the Setul Formation, which consists of not only limestone/marble but also of two detrital intervals. Different ratio combinations obtained from past researchers and that was produced from this study were tested on the image of the Dayang Bunting and Tuba Islands to identify the best ratio combinations that were able to discriminate the different lithologies for both islands. A total of 28 combinations were performed to examine which combinations are the most effective. From the 28 combinations, three were identified as the most suitable; 4/3 5/2 3/1, 5/3 4/3 4/1 and 4/2 5/3 4/3 in the RGB sequence. These combinations enhanced the spectral differences of each lithology unit so that it can be distinguished easily. Apart from the difference in the spectral response, the texture of the lithologies was also enhanced to assist in discriminating the different units. Penerbit Universiti Kebangsaan Malaysia 2016-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9868/1/01_Norbert_Simon.pdf Simon, Norbert and Che Aziz Ali, and Kamal Roslan Mohamed, and Kamilia Sharir, (2016) Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia. Sains Malaysiana, 45 (5). pp. 659-667. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid45bil5_2016/KandunganJilid45Bil5_2016.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Band ratio combination has been proven to be one of the most useful image processing methods for lithological discrimination, as discussed by many researchers in the past. In this study, bands from Landsat 5 TM were used to generate different ratio combinations to discriminate the different lithologies of two islands located at the southern end of the Langkawi archipelago, specifically the Dayang Bunting and Tuba Islands. Both islands comprise similar lithological units – namely, limestone/marble (Permian & Silurian-Ordovician), granite and alluvium. There are two rock formations that are limestone/marble dominated. The first is known as the Chuping Formation, which consists of limestone/marble and the other is the Setul Formation, which consists of not only limestone/marble but also of two detrital intervals. Different ratio combinations obtained from past researchers and that was produced from this study were tested on the image of the Dayang Bunting and Tuba Islands to identify the best ratio combinations that were able to discriminate the different lithologies for both islands. A total of 28 combinations were performed to examine which combinations are the most effective. From the 28 combinations, three were identified as the most suitable; 4/3 5/2 3/1, 5/3 4/3 4/1 and 4/2 5/3 4/3 in the RGB sequence. These combinations enhanced the spectral differences of each lithology unit so that it can be distinguished easily. Apart from the difference in the spectral response, the texture of the lithologies was also enhanced to assist in discriminating the different units.
format	Article
author	Simon, Norbert Che Aziz Ali, Kamal Roslan Mohamed, Kamilia Sharir,
spellingShingle	Simon, Norbert Che Aziz Ali, Kamal Roslan Mohamed, Kamilia Sharir, Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
author_facet	Simon, Norbert Che Aziz Ali, Kamal Roslan Mohamed, Kamilia Sharir,
author_sort	Simon, Norbert
title	Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
title_short	Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
title_full	Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
title_fullStr	Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
title_full_unstemmed	Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia
title_sort	best band ratio combinations for the lithological discrimination of the dayang bunting and tuba islands, langkawi, malaysia
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2016
url	http://journalarticle.ukm.my/9868/ http://journalarticle.ukm.my/9868/ http://journalarticle.ukm.my/9868/1/01_Norbert_Simon.pdf
first_indexed	2023-09-18T19:55:57Z
last_indexed	2023-09-18T19:55:57Z
_version_	1777406530341044224

Best band ratio combinations for the lithological discrimination of the Dayang Bunting and Tuba Islands, Langkawi, Malaysia

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