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Related Concept Videos

IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

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IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
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Infrared cone-shaped spatial target recognition based on an improved MKELM.

Caiyun Wang, Jiaxuan Han, Yun Chang

    Applied Optics
    |September 22, 2025
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    Summary
    This summary is machine-generated.

    This study introduces an improved multiple kernel extreme learning machine (MKELM) for infrared spatial target recognition using noisy radiation intensity data. The method enhances recognition accuracy and robustness in long-range detection scenarios.

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    Area of Science:

    • Infrared target recognition
    • Machine learning applications
    • Signal processing

    Background:

    • Long-range infrared detection often yields noisy radiation intensity sequences.
    • Accurate spatial target recognition is crucial for various applications.
    • Existing methods struggle with noisy data and limited input types.

    Purpose of the Study:

    • To propose a novel infrared cone-shaped spatial target recognition method.
    • To address the challenge of noisy radiation intensity sequences in long-range detection.
    • To improve recognition accuracy and robustness using advanced machine learning.

    Main Methods:

    • Incorporation of Variational Mode Decomposition (VMD) and reconstruction for radiation intensity sequences.
    • Optimization of parameters using the Whale Optimization Algorithm (WOA).
    • Development of an improved Multiple Kernel Extreme Learning Machine (MKELM) for target recognition.

    Main Results:

    • The proposed method demonstrates effectiveness on a simulated infrared radiation intensity sequence dataset.
    • Enhanced recognition accuracy was achieved compared to baseline methods.
    • The method exhibits improved robustness against noise in the input data.

    Conclusions:

    • The novel MKELM-based approach effectively recognizes infrared cone-shaped targets from noisy sequences.
    • VMD, WOA, and MKELM integration provides a robust solution for long-range detection challenges.
    • The findings highlight the potential of this method for practical infrared surveillance systems.