On Tracking of Cloud and Cyclone using Satellite Images.

Date of Submission

December 1998

Date of Award

Winter 12-12-1999

Institute Name (Publisher)

Indian Statistical Institute

Document Type

Master's Dissertation

Degree Name

Master of Technology

Subject Name

Computer Science


Electronics and Communication Sciences Unit (ECSU-Kolkata)


Mukherjee, Dipti Prasad (ECSU-Kolkata; ISI)

Abstract (Summary of the Work)

Study of cloud tracking is an important part of routine numerical weather analysis study. In this paper we present an algorithm to track clouds in INSAT image sequence. Given a pair of sequence images taken at half hourly time interval the objective of cloud tracking is to derive the path of movement of a cloud contour in the first image to the corre- sponding contour of the second image. This has direct relevance to cloud motion vector (CMV) analysis by which wind speed and direction are estimated. We have utilized an improved CMV algorithm to generate a set of initial estimates of possible cloud motion vectors. These initial estimates are filtered through a shape based approach. The contour of cloud mass is modelled as a perfectly flexible string. Following the proposed string based model, the cloud contour of first image is deformed for every possible CMV direction. The CMV direction for which the deformed contour best matches the second contour gives the optimum path of cloud movement from first to second image.Tropical cyclone intensity analysis using sateilite images has got a good step-by- step method after the work by Vernon F DVorak of Satellite Applications Laboratory of USA. The shape of cyclone has typical characteristics and their corresponding gradation numbers that it needs detailed study of those numbers to track its future course. Today it is widely used in the NOAA (National Ocean and Atmospheric Administration) and NESDIS (National Environmental Satellite Data and Information System) of USA and abroad also. In this thesis we have tried to implement a user-friendly software package using the proposed method. The aim of the software package is to assist experienced users iterate easily through the cyclone monitoring steps. The image processing utilities incorporated in the package will help an experienced user to analyze the different stages of cyclone development.


ProQuest Collection ID: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqm&rft_dat=xri:pqdiss:28843309

Control Number


Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.



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