利用探测到的多时变化卫星图像预报气旋

D. David, D. Rangaswamy
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引用次数: 4

摘要

天空中的云在预测天气方面起着重要的作用。卫星图像提供了天空中云的绝佳视图,这当然可以用于天气预报。在卫星图像中,特别是红外图像在许多应用中起着至关重要的作用。卫星云图为天气预报和早期预报台风、飓风等不同的大气扰动提供了宝贵的资料。强风和暴雨使人们在飓风来袭时避雨少。因此,在天气预报中,气旋预报具有重要作用,因为它直接关系到人类的生活和家庭。世界上许多次大陆都有受气旋严重影响的地区。在印度,在2013年5月的飓风期间,近70万人被迫搬迁,以防止生命和财产的损失。因此,有必要相应地计划好你的一天,这样你就不会措手不及。在文献中,气旋预报主要依靠多普勒雷达和历史卫星图像。由于气旋预报的范围有限,而且是半自动化的方法,因此有必要提出一种自动预报气旋的方法,该方法可以发现气旋向特定地点的移动和方向,并将这些信息转发给订阅用户。采用模糊c均值聚类对每张气旋图像进行分割,然后提取气旋图像的形状、颜色、纹理等特征。变化检测是发现多时相图像变化的过程。为了确定气旋的运动,将多时段气旋红外图像的特征进行比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Forecasting of cyclone using multi-temporal change detected satellite images
Clouds in the sky play an important role in predicting the weather. Satellite images provide an excellent view of clouds in the sky which can be certainly used in forecasting the weather. In Satellite images, particularly Infra Red (IR) images play a vital role in many applications. The satellite cloud images contain valuable information for weather forecasting and early prediction of different atmospheric disturbance such as typhoons, hurricanes etc. Very strong winds and torrential rainfall which makes people to become shelter less during cyclones. Therefore in forecasting weather, cyclone prediction has a major role as this is directly related to the lives and households of human being. Many sub-continents in the world have regions that are affected severely because of cyclones. In India, during Madi 2013 cyclone, nearly seven lakh people were forced to relocate, to prevent the loss of human life and their assets. So it is necessary to plan out your day accordingly so that you are not caught off guard. In the literatures, for cyclone prediction which is mainly dependent on Doppler Radars along with Historical Satellite images. Because of its limited range and semi-automatic approach, there is a need to propose a method to automate cyclone prediction, which finds the movement & direction of cyclone towards the given specific locality and relays those information to the subscribed users. Fuzzy C-means clustering is applied for segmenting each cyclone image, followed by extracting features like shape, color and texture for the same. Change Detection is the process of finding changes in multitemporal images. The features obtained from the multi-temporal cyclone IR images are compared with each other in order to determine the movement of cyclone.
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