Research on beach morphology extraction method based on Beach Morphology Index
Beaches are an important part of natural and tourism resources in coastal areas.The extraction of rapid and stable beach morphological information by remote sensing is essential for coastal zone management and research.This paper proposed the application of the Beach Morphology Index(BMI)to identify the beach morphology information on Xiamen Island.Special relationship between sandy shoreline and beach in geographic space is used to remove noise,so as to acquire accurate extraction of beach morphology.By comparing with three traditional supervised classification methods,we found that the proposed method of BMI beach morphology extraction has obvious advantages in accuracy,coverage,and extraction efficiency.Furthermore,this method could also be applied to remote sensing images taken in different locations and by different sensors,which proved that BMI could be a new method for extensive beach morphology extraction.
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