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13 March 2024 Mineral classification using convolutional neural networks and SWIR hyperspectral imaging
José I. Cifuentes, Luis E. Arias, Eric Pirard, Fernando Castillo
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Proceedings Volume 12903, AI and Optical Data Sciences V; 1290309 (2024) https://doi.org/10.1117/12.3002101
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
The correct identification of minerals is crucial task for the exploration and exploitation of mineral resources, environmental monitoring, and industrial processes. In this article, we propose a hyperspectral imaging system and classification model to identify nine types of minerals. To accomplish this, we employed a hyperspectral shortwave infrared (SWIR) camera to capture hyperspectral images. We then introduce a convolutional neural network (CNN) architecture that considers only spectral data, complemented by a fully connected network for classification. To prevent overfitting, we implemented the dropout technique, which enables random deactivation of neurons during the backpropagation process. This results in improved performance during the training phase and a better generalization capacity. Training was optimized to minimize the categorical cross-entropy objective function, and the model was evaluated during training using an accuracy metric. Finally, we evaluated the results with the test data using accuracy, recall, and precision metrics, and achieved 98.52%, 98.25%, and 98.68%, respectively. Our source code is available at https://github.com/jcifuenr/Spec-CNN.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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José I. Cifuentes, Luis E. Arias, Eric Pirard, and Fernando Castillo "Mineral classification using convolutional neural networks and SWIR hyperspectral imaging", Proc. SPIE 12903, AI and Optical Data Sciences V, 1290309 (13 March 2024); https://doi.org/10.1117/12.3002101
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KEYWORDS
Convolutional neural networks
Minerals
Hyperspectral imaging
Short wave infrared radiation
Image processing
Machine learning
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