Automatic Analysis of Trough Lines Based on Curvature Tracing
To solve the problems that arise in traditional automatic methods for trough line analysis with regard to low processing efficiency and analytical accuracy, an automatic method for trough line analysis was proposed in this study, comprising the following steps. Firstly, the curvature of contour line...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-03-01
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| Series: | Atmosphere |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4433/9/3/88 |
| _version_ | 1818484504521605120 |
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| author | Qian Li Yan Huang Yin Fan Shaoen Tang Yuntao Hu |
| author_facet | Qian Li Yan Huang Yin Fan Shaoen Tang Yuntao Hu |
| author_sort | Qian Li |
| collection | DOAJ |
| description | To solve the problems that arise in traditional automatic methods for trough line analysis with regard to low processing efficiency and analytical accuracy, an automatic method for trough line analysis was proposed in this study, comprising the following steps. Firstly, the curvature of contour lines was calculated using geopotential height field data to extract tracing start points, and candidate and non-candidate trough points were classified and recognized based on their curvature and relative positions. Afterwards, among the candidates, the eligible trough points were connected from tracing start point. Finally, the automatically analyzed trough lines were obtained after some post-processing steps. The experimental results indicate that the method is able to effectively identify meteorological trough lines, and that its performance is superior to some previous analysis methods of trough line in terms of analytical accuracy and processing speed. |
| first_indexed | 2024-12-10T15:56:27Z |
| format | Article |
| id | doaj.art-841b1f667aba4783b47fcbf1768419ae |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-10T15:56:27Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-841b1f667aba4783b47fcbf1768419ae2022-12-22T01:42:38ZengMDPI AGAtmosphere2073-44332018-03-01938810.3390/atmos9030088atmos9030088Automatic Analysis of Trough Lines Based on Curvature TracingQian Li0Yan Huang1Yin Fan2Shaoen Tang3Yuntao Hu4College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 210001, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 210001, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 210001, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 210001, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 210001, ChinaTo solve the problems that arise in traditional automatic methods for trough line analysis with regard to low processing efficiency and analytical accuracy, an automatic method for trough line analysis was proposed in this study, comprising the following steps. Firstly, the curvature of contour lines was calculated using geopotential height field data to extract tracing start points, and candidate and non-candidate trough points were classified and recognized based on their curvature and relative positions. Afterwards, among the candidates, the eligible trough points were connected from tracing start point. Finally, the automatically analyzed trough lines were obtained after some post-processing steps. The experimental results indicate that the method is able to effectively identify meteorological trough lines, and that its performance is superior to some previous analysis methods of trough line in terms of analytical accuracy and processing speed.http://www.mdpi.com/2073-4433/9/3/88trough linesautomatic analysisgeopotential height fieldcurvature tracing |
| spellingShingle | Qian Li Yan Huang Yin Fan Shaoen Tang Yuntao Hu Automatic Analysis of Trough Lines Based on Curvature Tracing Atmosphere trough lines automatic analysis geopotential height field curvature tracing |
| title | Automatic Analysis of Trough Lines Based on Curvature Tracing |
| title_full | Automatic Analysis of Trough Lines Based on Curvature Tracing |
| title_fullStr | Automatic Analysis of Trough Lines Based on Curvature Tracing |
| title_full_unstemmed | Automatic Analysis of Trough Lines Based on Curvature Tracing |
| title_short | Automatic Analysis of Trough Lines Based on Curvature Tracing |
| title_sort | automatic analysis of trough lines based on curvature tracing |
| topic | trough lines automatic analysis geopotential height field curvature tracing |
| url | http://www.mdpi.com/2073-4433/9/3/88 |
| work_keys_str_mv | AT qianli automaticanalysisoftroughlinesbasedoncurvaturetracing AT yanhuang automaticanalysisoftroughlinesbasedoncurvaturetracing AT yinfan automaticanalysisoftroughlinesbasedoncurvaturetracing AT shaoentang automaticanalysisoftroughlinesbasedoncurvaturetracing AT yuntaohu automaticanalysisoftroughlinesbasedoncurvaturetracing |