The Effect of Sunglint on Benthic Habitats Mapping in Pari Island Using Worldview-2 Imagery
详细信息 查看全文
- 作者：Ari Anggoro ; arianggoro17@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Vincentius P. Siregar ; Syamsul B. Agus
- 关键词：benthic habitats ; Pari Island ; sunglint correction ; worldview-2 imagery
- 刊名：Procedia Environmental Sciences
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：33
- 期：Complete
- 页码：487-495
- 全文大小：882 K
文摘
Sunglint is a specular reflection of light from water surfaces that may cause misclassification and poor accuracy for benthic habitats mapping. The aim of this research was to investigate sunglint intensity for each benthic habitats and compared the accuracy result before and after sunglint correction from worldview-2 imagery. Hedley method and analysis coefficient of variation (COV) was used to estimate and remove the glint radiance component, while Mahalanobis distance was used to classify before and after sunglint correction from those imagery. The result showed that the average of sunglint intensity on benthic habitats was 38,9%. The highest sunglint intensity effect found in coral reef class (44%) and the lowest one in sand class (34%). The overall accuracy before and after sunglint correction were 53% and 60%. Sunglint correction well to do in reducing the effect of sunglint and increase the overall accuracy till 7%.