Automatic identification method for ground weather map high-voltage system
A high-voltage system and automatic identification technology, applied in 2D image generation, image enhancement, image analysis, etc., can solve the problems of complex appearance structure, bending, and no automatic identification and tracking objective algorithm, etc., to increase objectivity, The effect of enriching description features and reducing recognition uncertainty
Pending Publication Date: 2021-11-30
NANJING UNIV OF INFORMATION SCI & TECH
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[0004] However, due to the relatively complex external structure of the continental surface high pressure, which is easily bent due to the influence of the terrain, there is no objective algorithm for automatic identification and tracking of the two-dimensional structure of the surface high pressure and the high pressure system.
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[0048] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0049] Such as Figure 1-2 As shown, the present invention provides a method for automatic identification of high-pressure systems on surface synoptic maps, which can automatically identify high-pressure anticyclone systems, and can automatically determine the characteristic values of high-pressure circulation systems through the air pressure values in weather mapping, increasing objectivity. Include the following steps:
[0050] Step S1: Based on the two thresholds, find the candidate points of the high pressure center in the surface synoptic map, which specifically includes the following steps:
[0051] Step S101: input the original data at 00:00 on January 1, 1979, latitude m=512 grid points, longitude n1=256 grid points (pressure value, latitude and longitude);
[0052] Step S102: Frame the research area (20°N—70°N, 0°E—180°E), set mt...
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The invention discloses an automatic identification method for a ground weather map high-voltage system, and the method comprises the steps: S1, searching a high-voltage center candidate point in a ground weather map based on two threshold values; S2, drawing a contour line for the ground weather map based on a triangular mesh interpolation method; and S3, determining a high-voltage system and a high-voltage center in the ground weather map. According to the method, the ground high voltage is objectively recognized based on the outermost closed contour line, the automatic recognition uncertainty of the ground high voltage is reduced, the two-dimensional structural features of the high voltage system are objectively and accurately described, help is provided for improving the accuracy of service forecasting, ground high voltage service analysis automation is achieved, and the method has important practical significance.
Description
technical field [0001] The invention belongs to the technical field of automatic identification of weather systems, and in particular relates to an automatic identification method for a high-pressure system of a surface weather map. Background technique [0002] The high pressure / anticyclone system of the surface weather map is one of the important concerns of meteorological operational forecast analysis and related scientific research. How to record and track such systems objectively, efficiently and accurately has important social significance for research and operational forecasting. [0003] In the current business and scientific research work, the research on ground high pressure is mainly based on manual identification and subjective analysis. Recently, some automatic identification algorithms for ground high pressure have appeared, but most of them are aimed at the objective identification of a single point (high pressure center point). Due to the fact that there are ...
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IPC IPC(8): G06T7/136G06T7/62G06T11/20
CPCG06T7/136G06T7/62G06T11/206G06T2207/30192Y02A90/10
Inventor 陈永妍李一诺唐宪冰卢楚翰
Owner NANJING UNIV OF INFORMATION SCI & TECH