A Quadratic Clustering Segmentation Method for Satellite Cloud Images

Abstract

The invention discloses a secondary clustering segmentation method for a satellite cloud picture. According to the secondary clustering segmentation method for the satellite cloud picture, firstly, block processing is carried out to the whole wide-range satellite could picture; secondly, corresponding multi-channel spectral features and three-patch length between perpendiculars (TPLBP) textural features are sequentially extracted from each of sample points of each sub regional could picture for fine initial kernel clustering segmentation so as to obtain multiple sub regional could picture segmentation results; and at last, secondary kernel clustering segmentation is carried out to the global cloud picture on the basis of the initial kernel clustering segmentation results by utilization of the initial kernel clustering segmentation results as prior knowledge to extract a variety of grayscale average features and density indicator features of the initial kernel clustering segmentation results in a corresponding original sub regional cloud picture range so as to ensure integrity of cloud classification. The secondary clustering segmentation method for the satellite cloud picture has the advantages of being high in precision and robustness, and capable of identifying cloud classification in a fine mode according to huge and complicated geographical information, ocean information, atmospheric information and other information which are contained in the wide-range meteorological satellite cloud picture.

Description

technical field [0001] The invention relates to a processing technology of meteorological satellite cloud images, in particular to a method for secondary clustering and segmentation of satellite cloud images. Background technique [0002] Weather forecasting is an important application in meteorology, which is closely related to everyone's daily life, even related to the safety of people's lives and properties. Accurate cloud classification is the basis of weather forecast, so it is very important to segment satellite cloud images to achieve correct cloud classification. The earliest cloud image classification was analyzed and judged by meteorologists with naked eyes through rich meteorological knowledge. However, with the development of meteorological satellite technology, large-scale meteorological satellites send cloud image data of more than GB order to the ground every day. Taking my country's Fengyun-2 D satellite (FY2-D) as an example, its launch in December 2006 suc...

AI Technical Summary

Problems solved by technology

However, most of the existing methods are only suitable for classification of cloud images with a small range and few categories, and most of the methods are not ideal in terms of noise resistance and segmentation accuracy, which will not be conducive to their practical application in the field of meteorology

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