Abstract
Image fusion techniques integrate complimentary information from multiple image sensor data such that the new images are more suitable for the purpose of human visual perception and computer based processing tasks for extraction of detail information. As an important part of image fusion algorithms, pixel-level image fusion can combine spectral information of coarse resolution imagery with finer spatial resolution imagery. Ideally, the method used to merge data sets with high-spatial and highspectral resolution should not distort the spectral characteristics of the high-spectral resolution data. This paper describes the Discrete Wavelet Transform (DWT) algorithm for the fusion of two images using different spectral transform methods and nearest neighbor resampling techniques. This research paper investigates the performance of fused image with high spatial resolution Cartosat-1(PAN) with LISS IV and Cartosat-1(PAN) sensor images with the LISS III sensor image of Indian Remote Sensing satellites. The visual and statistical analysis of fused images has shown that the DWT method outperforms in terms of Geometric, Radiometric, and Spectral fidelity.
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Acknowledgement
The authors are specially thankful to Dr. R.P. Singh, Director, MANIT Bhopal (M.P.) for his kind permission to use the resources and Satellite Data in Remote Sensing and GIS Center of Civil Engg Department, Maulana Azad National Institute of Tech Bhopal, and Dr. S Sriniwas Rao, Sr. scientist, National Remote Sensing Center Hyderabad (A. P.) for his valuable guidance in this research paper.
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Chitade, A.Z., Katiyar, S.K. Multiresolution and Multispectral Data Fusion Using Discrete Wavelet Transform with IRS Images: Cartosat-1, IRS LISS III and LISS IV. J Indian Soc Remote Sens 40, 121–128 (2012). https://doi.org/10.1007/s12524-011-0140-0
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DOI: https://doi.org/10.1007/s12524-011-0140-0