The Restoration Technique for Recognition of Asterias Amurensis

Abstract

Asterias amurensis, also referred to as the Northern Pacific seastar, is so indiscriminate a predator that it deserves to be called pirates of the sea. They usually eat fish and shellfish including abalones and clams. Due to the high fertility rate, Asterias amurensis is one of the main culprits in devastating fishing grounds. Starfish are anywhere in the East Sea and South Sea. In recent years, however, their number has sharply increased in the West Sea. This paper aims to recognize and extract deformed Asterias amurensis through the use of the concave and convex feature points, central moment, and short lines and long lines. Another purpose of this paper is to restore Asterias amurensis using the radial symmetry. Marked by the characteristics that include pentaradiality and the ability to vary in outward shapes according to circumstances, Asterias amurensis is hard to recognize. With this in mind, this paper propose a simple method for improve rates of recognition of starfish. It will not be long before the restoration method proposed in this paper is of great help in eradicating Asterias amurensis.