Applying DEM data to improve performance of water extraction indices using landsat 8 OLI images in mountainous area

Elham Goumehei, Wanglin Yan

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

Water is one of the most important earth resources which is essential to human health, society and environment. Studies on water extraction and changes have been subjects of academic studies for many years. Remote sensing as an efficient and reliable tool has been used in recent years and Landsat satellite imagery were one of the most common data due to their advantages in spatial resolution and cost. Improvement of new Landsat 8, the Operational Land Imager (OLI) data attracted more attentions recently. This study uses the Landsat 8 OLI imagery data source for water information extraction based on the Normalized Difference Water Index (NDWI), Modified Normalized Water Index (MNDWI) and Automated Water Extraction Index (AWEI) to compare the effect of using The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) in mountainous area. The study area is Kermanshah, in west of Iran, a mountainous area which has difficulties for water extraction due to shadows and dark objects. Due to small area of water bodies in study area user's accuracy were used for evaluation of results. User accuracy for water class gives results of 23.68%, 24.34% and 22.57% for NDWI, MNDWI and AWEI, respectively. In other words, around 77% of pixels which classified as water are not water and are misclassified pixels. Applying DEM data improves results to 27.44%, 29.1% and 27.22% for NDWI, MNDWI and AWEI, respectively which shows slight increase of 3.76%, 4.88% and 4.65%.

本文言語English
ホスト出版物のタイトルProceedings - 2016 International Electronics Symposium, IES 2016
出版社Institute of Electrical and Electronics Engineers Inc.
ページ455-458
ページ数4
ISBN(電子版)9781509016402
DOI
出版ステータスPublished - 2017 2月 21
イベント18th International Electronics Symposium, IES 2016 - Bali, Indonesia
継続期間: 2016 9月 292016 9月 30

Other

Other18th International Electronics Symposium, IES 2016
国/地域Indonesia
CityBali
Period16/9/2916/9/30

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 代数と数論
  • 電子工学および電気工学
  • 器械工学

フィンガープリント

「Applying DEM data to improve performance of water extraction indices using landsat 8 OLI images in mountainous area」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル