Tropical Cyclone Center Determination Algorithm by Texture and Gradient of Infrared Satellite Image

Abstract

A novel algorithm for tropical cyclone (TC) center determination is presented by using texture and gradient of infrared satellite image from geostationary satellite. Except those latter disappearing TC satellite images that are little valuable to a TC center determination, generally other periods of TC, all have an inner core. And the centers are generally determined in the inner core. Based on this, an efficient TC center determination algorithm is designed. First, the inner core of a TC is obtained. Then, according to the texture and gradient information of the inner core, the center location of the TC is determined. The effectiveness of the proposed TC center determination algorithm is verified by using Chinese FY-2C stationary infrared satellite image. And the location result is compared with that of the "tropical cyclone yearbook," which was compiled by Shanghai Typhoon Institute of China Meteorological Administration. Experimental results show that the proposed algorithm can provide a new technique that can automatically determine the center location for a TC based on infrared satellite image.

A method of locating tropical cyclone center based on gaussian model

“…Huadong et al [13] and Ryglicki et al [14] studied many methods for locating the center of tropical cyclone, and divided these methods into two categories: morphological model analysis method and wind field analysis method. The main feature of morphological model analysis method is the analysis of tropical cyclone morphological characteristics [15,16]. The central position of the tropical cyclone is determined by looking for the origin of the logarithmic spiral of the image skeleton line [17,18] or by locating the point where the brightness temperature gradient vector converges [19].…”

A Tropical Cyclone Center Location Method Based on Satellite Image

“…The first kind of method is based on pattern analysis of morphological characteristics of the tropical cyclone [ 14 , 15 ]. By using image processing techniques [ 16 ], the spiral center of the cyclone is determined by finding the origin of a logarithmic helix [ 17 ] or by locating the point where the gradient vectors of brightness temperature are converging [ 18 ].…”

“…Huadong et al [12] and Ryglicki and Hart [13] investigated various methods of tropical cyclone center location and classified methods into two categories: morphological pattern analysis method and wind field analysis method. e first kind of method is based on pattern analysis of morphological characteristics of the tropical cyclone [14,15]. By using image processing techniques [16], the spiral center of the cyclone is determined by finding the origin of a logarithmic helix [17] or by locating the point where the gradient vectors of brightness temperature are converging [18].…”