A novel filter based on three variables mutual information for dimensionality reduction and classification of hyperspectral images
| Autor: | Chafik Nacir, Asma Elmaizi, Ahmed Hammouch, Elkebir Sarhrouni |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Ground truth
010308 nuclear & particles physics business.industry Dimensionality reduction Computer Science - Computer Vision and Pattern Recognition 0211 other engineering and technologies Hyperspectral imaging Pattern recognition Image processing 02 engineering and technology Mutual information 01 natural sciences Measure (mathematics) Filter (video) 0103 physical sciences Relevance (information retrieval) Artificial intelligence business 021101 geological & geomatics engineering Mathematics |
| Zdroj: | 2016 International Conference on Electrical and Information Technologies (ICEIT). |
| DOI: | 10.1109/eitech.2016.7519622 |
| Popis: | The high dimensionality of hyperspectral images (HSI) that contains more than hundred bands (images) for the same region called Ground Truth Map, often imposes a heavy computational burden for image processing and complicates the learning process. In fact, the removal of irrelevant, noisy and redundant bands helps increase the classification accuracy. Band selection filter based on "Mutual Information" is a common technique for dimensionality reduction. In this paper, a categorization of dimensionality reduction methods according to the evaluation process is presented. Moreover, a new filter approach based on three variables mutual information is developed in order to measure band correlation for classification, it considers not only bands relevance but also bands interaction. The proposed approach is compared to a reproduced filter algorithm based on mutual information. Experimental results on HSI AVIRIS 92AV3C have shown that the proposed approach is very competitive, effective and outperforms the reproduced filter strategy performance. Keywords - Hyperspectral images, Classification, band Selection, Three variables Mutual Information, information gain. |
| Databáze: | OpenAIRE |
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