Manifold Learning for Hyperspectral Images
This addresses a domain-specific problem in hyperspectral image processing for X-ray transmission spectroscopy, with incremental improvements over traditional techniques.
The paper tackled the problem of inadequate feature representation in X-Ray Transmission Multi-Energy images, which limits neural network performance, by proposing a manifold learning method using Uniform Manifold Approximation and Projection that improves classification accuracy and robustness.
Traditional feature extraction and projection techniques, such as Principal Component Analysis, struggle to adequately represent X-Ray Transmission (XRT) Multi-Energy (ME) images, limiting the performance of neural networks in decision-making processes. To address this issue, we propose a method that approximates the dataset topology by constructing adjacency graphs using the Uniform Manifold Approximation and Projection. This approach captures nonlinear correlations within the data, significantly improving the performance of machine learning algorithms, particularly in processing Hyperspectral Images (HSI) from X-ray transmission spectroscopy. This technique not only preserves the global structure of the data but also enhances feature separability, leading to more accurate and robust classification results.