Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Precipitation similar forecasting method based on image feature combination

A technology similar to forecasting and image features, applied in forecasting, special data processing applications, data processing applications, etc., can solve the problems of slow retrieval speed and low accuracy rate, and achieve the effect of improving accuracy rate and retrieval speed

Pending Publication Date: 2022-07-05
SHENYANG POLYTECHNIC UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a precipitation similarity forecasting method based on image feature combination, the purpose of which is to solve the problems of low accuracy and slow retrieval speed in current point-to-point similarity forecasting

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Precipitation similar forecasting method based on image feature combination
  • Precipitation similar forecasting method based on image feature combination
  • Precipitation similar forecasting method based on image feature combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] A precipitation similarity prediction method based on image feature combination is characterized in that, it comprises the following steps:

[0037] Step 1: Obtain the historical situation field data, including the data of the European Medium-term Weather Forecast Center for 3 hours (universal time) 0.25°×0.25° daily reanalysis data, including the basic quantity of the sea level pressure and the standard isobaric surface of 500, 700 and 850 hPa : Geopotential height, temperature, zonal wind speed, meridional wind speed, air pressure and specific humidity data; and corresponding historical live data, including historical live data of precipitation, visibility, wind direction and wind speed for each station. Based on this, establish a historical database with a time depth of 40 years;

[0038] Step 2: Obtain the real-time forecast field data in the European Center for Medium Weather Forecasting (ECMWF) numerical forecast data, including the forecast situation field data a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of image retrieval, in particular to a weather situation field rainfall similarity forecasting method based on image feature combination, which comprises the following steps of: extracting overall features, local features, isoline features and nonlinear dimension reduction features of a situation field, and performing similarity measurement on the extracted features, so that a plurality of features jointly determine a retrieval result; the rainfall similar forecast based on the situation field is realized, and the accuracy of the final result is improved. In addition, after being extracted, the low-dimensional features of the historical situation field are stored in a historical feature database, similarity measurement is directly conducted on the low-dimensional features when the similarity is calculated, and the retrieval speed is increased. The method can be used for precipitation analysis in the meteorological field.

Description

technical field [0001] The invention relates to the technical field of image retrieval, in particular to a similar forecasting method for precipitation in a weather situation field based on image feature combination. Background technique [0002] Precipitation is closely related to production and life, social economy, water conservancy and flood control, etc. The analysis and prediction of precipitation has always been an important service work. A good precipitation forecast is not only related to food security, but also to the national economy and people's livelihood, so how to make precipitation forecast more accurate? Objectification, quantification and accuracy have become the most important content in the weather forecasting business, and the similar forecasting method is the method that is often used in precipitation forecasting at present. [0003] The main problem of similarity prediction is the retrieval problem. At present, the research at home and abroad mainly fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/2458G06F16/2453G06Q10/04
CPCG06F16/2477G06F16/2465G06F16/2462G06F16/2453G06Q10/04Y02A90/10
Inventor 段勇闫旭于霞
Owner SHENYANG POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com