CPMFFormer: Class-Aware Progressive Multiscale Fusion Transformer for Hyperspectral Image Classification Article Swipe

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Meng Zhang , Yi Yang , Sixian Zhang , Pengbo Mi , Deqiang Han ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.3390/rs17223684

Hyperspectral image (HSI) classification is a basic and significant task in remote sensing, the aim of which is to assign a class label to each pixel in an image. Recently, deep learning networks have been widely applied in HSI classification. They can extract discriminative spectral–spatial features through spectral weighting and multiscale spatial information modeling. However, existing spectral weighting mechanisms lack the ability to explore the inter-class spectral overlap caused by spectral variability. Moreover, current multiscale fusion strategies ignore semantic conflicts between features with large-scale differences. To address these problems, a class-aware progressive multiscale fusion transformer (CPMFFormer) is proposed. It first introduces class information into a spectral weighting mechanism. This helps CPMFFormer to learn class-specific spectral weights and enhance class-discriminative spectral features. Then, a center residual convolution module is constructed to extract features at different scales. It is embedded with a center feature calibration layer to achieve hierarchical enhancement of representative spatial features. Finally, a progressive multiscale fusion strategy is designed to promote effective collaboration between features at different scales. It achieves a smooth semantic transition by gradually fusing adjacent scale features. Experiments using five public HSI datasets show that CPMFFormer is rational and effective.

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/rs17223684
PDF: https://www.mdpi.com/2072-4292/17/22/3684/pdf?version=1762785091
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Cited By: 1
OpenAlex ID: https://openalex.org/W4416074170

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DOI: https://doi.org/10.3390/rs17223684

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Title: CPMFFormer: Class-Aware Progressive Multiscale Fusion Transformer for Hyperspectral Image Classification

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Language: en

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Publication year: 2025

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Publication date: 2025-11-10

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Authors: Meng Zhang, Yi Yang, Sixian Zhang, Pengbo Mi, Deqiang Han

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Landing page: https://doi.org/10.3390/rs17223684

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Cited by: 1

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