Abstract
Hyperspectral sensors are capable of collecting information in hundreds of contiguous spectral bands to expand the capability of multispectral sensors that use tens of discrete spectral bands. The contiguous bands play a vital role in study of types of vegetation, minerals, forest and soil types. In this paper, an iteratively learning parameter algorithm has been implemented to classify the hyperspectral image in an unsupervised way. The methodology followed in learning the parameters of ICA mixture model (ICAMM) has been discussed and the proportionality constant has been fixed as 0.7 to obtain the linear transformation for estimating the class membership probability of each pixel of a hyperspectral data. The ICAMM algorithm models class distributions as non-Gaussian densities, has been employed for unsupervised classification. Here the data have been transformed into new space in which, the data are as independent as possible by exploiting higher order statistics. This algorithm produces an average overall accuracy of around 65 % and outperforms the conventional K-means clustering and ISODATA.
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Prabhu, N., Arora, M.K., Balasubramanian, R., Gupta, K. (2014). An ICA Mixture Model Based Approach for Sub-pixel Classification of Hyperspectral Data. In: Pant, M., Deep, K., Nagar, A., Bansal, J. (eds) Proceedings of the Third International Conference on Soft Computing for Problem Solving. Advances in Intelligent Systems and Computing, vol 258. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1771-8_65
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