An improved length variable angle chain code algorithm and its application to dock identification

doi:10.6046/gtzyyg.2016.04.25

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Abstract

This paper proposed an improved length variable angle chain code algorithm for the angle information loss of curve approximation and used this algorithm in dock detection. The new algorithm changes the rules in the selection of the end point and retains the advantages of length variable angle chain code; when occupying the same storage quantity, it can achieve better effect on retaining the corner of larger curvature. This method leaves out the small floatation of curve and it has a positive effect on angle feature and linear feature extraction. The authors used the method to extract the feature of image for dock detection, extracted the geometric feature based on the coastline, and marked out the dock areas combining the geometric feature with the existing knowledge. Experiments show this method can effectively extract right angle and parallel features.

Keywords new SAR sensors absolute radiometric calibration level-1 detected ground range products(L-1 DGRP) back scattering coefficient Sentinel1

TP391.9

Issue Date: 20 October 2016

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	Articles by authors

	DU Weina
	XU Aigong
	SONG Yaoxin
	SUN Huasheng

Cite this article:

DU Weina,XU Aigong,SONG Yaoxin, et al. An improved length variable angle chain code algorithm and its application to dock identification[J]. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(4): 164-169.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2016.04.25 OR https://www.gtzyyg.com/EN/Y2016/V28/I4/164

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