Clustering Parameters for Multispectral Satellite Image Analysis PDF Download

Author: Prasad Kaviti
Publisher:
ISBN: 9783545941021
Category :
Languages : en
Pages : 0

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Book Description
Clustering parameters for multispectral satellite image analysis is a method used in image processing and remote sensing to extract useful information from satellite images. Clustering is an unsupervised learning technique that groups similar pixels together based on their spectral and spatial characteristics. The process of clustering in multispectral satellite image analysis involves using various parameters to extract relevant features and reduce the dimensionality of the data. Spectral information, such as the reflectance values of different spectral bands, is used to group similar pixels together. Spatial information, such as the location and shape of the clusters, is also considered. Different clustering algorithms can be used, such as K-means, Expectation-Maximization, hierarchical clustering, density-based clustering, and spectral-spatial clustering. The choice of algorithm and parameters will depend on the specific application and the desired level of accuracy for the image segmentation and classification. To evaluate the performance of the clustering, various validation metrics can be used, such as the confusion matrix, overall accuracy, F1-score, Jaccard similarity coefficient, and Kappa coefficient. These metrics provide a quantitative measure of the clustering performance and can be used to compare different clustering methods and parameters. Overall, Clustering Parameters for Multispectral Satellite Image Analysis is a powerful method for extracting useful information from satellite images and it is widely used in various applications such as land use/land cover mapping, crop identification, and natural resources management. Image analysis is a widely used technique, which is necessary for understanding and speculating specific aspects of the information. Images are analyzed and pro- cessed to help single users, professional bodies, and government organizations. In today's world, remotely sensed multispectral images processing is a major research area used to deal with problems such as landuse-landcover, fire detection, crop es- timation, and flood prediction to name a few, which greatly impact the economic and environmental concerns, and the techniques developed through this technol- ogy allows many real-life applications with high social value [CVTGC]11]. Classification is the most common operation used to analyze these multispec- tral images. The critical objective of the image classification technique is to group all pixel data of an image into land cover classes or thematic maps automatically [JL05]. In general, multispectral images pixels have an inherent spectral pattern which is the numerical basis for the classification of multispectral images i.e. the inherent spectral reflectance and emittance properties of the electromagnetic spec- trum are indexed with different combinations of Digital Numbers in the image to recognize various types of features or objects. Spectral pattern recognition is a classification procedure that performs automated landcover classification with the help of pixel-by-pixel spectral information. Remote sensing is one of the efficient ways to procure multispectral images. Re- mote sensing is a procedure to acquire data from any distance without physically interacting with objects. Remote sensing can be made possible with the help of satellites or aircrafts which have sensors mounted on them to capture electromag- netic radiation scattered or emitted from the Earth's surface.