A4 Artikkeli konferenssijulkaisussa
Piecewise anomaly detection using minimal learning machine for hyperspectral images (2021)
Raita-Hakola, A.-M., & Pölönen, I. (2021). Piecewise anomaly detection using minimal learning machine for hyperspectral images. In N. Paparoditis, C. Mallet, F. Lafarge, M. Y. Yang, J. Jiang, A. Shaker, H. Zhang, X. Liang, B. Osmanoglu, U. Soergel, E. Honkavaara, M. Scaioni, J. Zhang, A. Peled, L. Wu, R. Li, M. Yoshimura, K. Di, O. Altan, H. M. Abdulmuttalib, & F. S. Faruque (Eds.), XXIV ISPRS Congress Imaging today, foreseeing tomorrow, Commission III (V-3-2021, pp. 89-96). Copernicus Publications. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences. https://doi.org/10.5194/isprs-annals-V-3-2021-89-2021
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Raita-Hakola, A.-M.; Pölönen, I.
Emojulkaisu: XXIV ISPRS Congress Imaging today, foreseeing tomorrow, Commission III
Emojulkaisun toimittajat: Paparoditis, N.; Mallet, C.; Lafarge, F.; Yang, M. Y.; Jiang, J.; Shaker, A.; Zhang, H.; Liang, X.; Osmanoglu, B.; Soergel, U.; Honkavaara, E.; Scaioni, M.; Zhang, J.; Peled, A.; Wu, L.; Li, R.; Yoshimura, M.; Di, K.; Altan, O.; Abdulmuttalib, H. M.; Faruque, F. S.
Konferenssi:
- International Society for Photogrammetry and Remote Sensing Congress
Konferenssin paikka ja aika: Digital Event, 5.-9.7.2021
Lehti tai sarja: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
ISSN: 2194-9042
eISSN: 2194-9050
Julkaisuvuosi: 2021
Ilmestymispäivä: 17.06.2021
Volyymi: V-3-2021
Artikkelin sivunumerot: 89-96
Kirjan kokonaissivumäärä: 324
Kustantaja: Copernicus Publications
Julkaisumaa: Saksa
Julkaisun kieli: englanti
DOI: https://doi.org/10.5194/isprs-annals-V-3-2021-89-2021
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/77765
Tiivistelmä
Hyperspectral imaging, with its applications, offers promising tools for remote sensing and Earth observation. Recent development has increased the quality of the sensors. At the same time, the prices of the sensors are lowering. Anomaly detection is one of the popular remote sensing applications, which benefits from real-time solutions. A real-time solution has its limitations, for example, due to a large amount of hyperspectral data, platform’s (drones or a cube satellite) constraints on payload and processing capability. Other examples are the limitations of available energy and the complexity of the machine learning models. When anomalies are detected in real-time from the hyperspectral images, one crucial factor is to utilise a computationally efficient method. The Minimal Learning Machine is a distance-based classification algorithm, which can be modified for anomaly detection. Earlier studies confirms that the Minimal learning Machine (MLM) is capable of detecting efficiently global anomalies from the hyperspectral images with a false alarm rate of zero. In this study, we will show that by using a carefully selected lower threshold besides the higher threshold of the variance, it is possible to detect local and global anomalies with the MLM. The downside is that the improved method is highly sensitive with the respect to the noise. Thus, the second aim of this study is to improve the MLM’s robustness with respect to noise by introducing a novel approach, the piecewise MLM. With the new approach, the piecewise MLM can detect global and local anomalies, and the method is significantly more robust with respect to noise than the MLM. As a result, we have an interesting, easy to implement and computationally light method which is suitable for remote sensing applications.
YSO-asiasanat: spektrikuvaus; hyperspektrikuvantaminen; koneoppiminen
Vapaat asiasanat: hyperspectral imaging; Minimal Learning Machine; piecewise approach; anomaly detection; real-time computation; machine learning
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Autonominen UAV spektrometriaan perustuva puun kunnon analysaattori
- Pölönen, Ilkka
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 1