The Analysis of the Beach Changes in Two Islands as Major Sea Turtle Nesting Sites in the Northern Arabian Gulf Using Multiple Image Processing Methods
Abstract
Changes in the landscape over the decades have a major impact on the areas which has rich biodiversity and high ecological values. Such changes occur in an island's results with the decay of beach sand which brings potential threats to the natural habitat of sea turtles. In this study, changes in Jana and Karan islands area from 1970 to 2017 were compared using image processing techniques such as edge detection and thresholding. Images of Jana and Karan islands are collected using USGS-Landsat Look viewer which includes satellite images from Landsat 8 OLI and Landsat 1-5MSS sensors. Edge detectionmethods such as Canny, Sobel, Prewitt, and Laplacian of Gaussian is applied to detect the edges of both island and area is calculated after preprocessing the images. According to the Canny method, Jana island has reduced about 20% of land area and 23% for the Prewitt method from 1970 to 2017. Karan island has reduced 10% of the area as reported by the Laplacian method and 9% reduction of land area for the Sobel method. Canny method outperformed all other edge detection methods whereas the Laplacian method demonstrates some exceptional results for the analysis conducted for both islands.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2022
- Bibcode:
- 2022AGUFMGC24B..04P