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RIKEN Center for Advanced Intelligence Project

Geoinformatics Unit

Unit Leader: Naoto Yokoya (D.Eng.)
Naoto  Yokoya(D.Eng.)

Geoinformatics Unit aims at developing intelligent systems that monitor and assess the state and changes of urban areas and natural environments from large-scale time-series geospatial data. We study fundamental technologies of geospatial data analysis that can deal with data incompleteness, limited training data, and multimodality. Our applied research includes disaster response, urban planning, and forest monitoring.

Main Research Field

Multidisciplinary

Related Research Fields

Computer Science / Geosciences

Research Subjects

  • Earth observation data analysis
  • Data fusion
  • Machine learning

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.
  1. *Yokoya, N., Grohnfeldt, C., and Chanussot, J.:
    "Hyperspectral and multispectral data fusion: a comparative review of the recent literature"
    IEEE Geoscience and Remote Sensing Magazine, vol. 5, no. 2, pp. 29-56, (2017).
  2. *Yokoya, N.:
    "Texture-guided multisensor superresolution for remotely sensed images"
    Remote Sensing, vol. 9, no. 4: 316, (2017).
  3. *Yokoya, N., Zhu, X. X., and Plaza, A.:
    "Multisensor coupled spectral unmixing for time-series analysis"
    IEEE Trans. Geosci. Remote Sens., vol. 55, no. 5, pp. 2842-2857, (2017).
  4. *Yokoya, N., Chan, J. C. W., and Segl, K.:
    "Potential of resolution-enhanced hyperspectral data for mineral mapping using simulated EnMAP and Sentinel-2 images"
    Remote Sensing, vol. 8, no. 3: 172, (2016).
  5. *Yokoya, N., and Iwasaki, A.:
    "Object detection based on sparse representation and Hough voting for optical remote sensing imagery"
    IEEE J. Sel. Topics Appl. Earth Observ. Remote Sens., vol. 8, no. 5, pp. 2053-2062, (2015).
  6. *Yokoya, N., Nakazawa, S., Matsuki, T., and Iwasaki, A.:
    "Fusion of hyperspectral and LiDAR data for landscape visual quality assessment"
    IEEE J. Sel. Topics Appl. Earth Observ. Remote Sens., vol. 7, no. 6, pp. 2419-2425, (2014).
  7. *Yokoya, N., Chanussot, J., and Iwasaki, A.:
    "Nonlinear unmixing of hyperspectral data using semi-nonnegative matrix factorization"
    IEEE Trans. Geosci. Remote Sens., vol. 52, no. 2, pp. 1430-1437, (2014).
  8. *Yokoya, N., Mayumi, N., and Iwasaki, A.:
    "Cross-calibration for data fusion of EO-1/Hyperion and Terra/ASTER"
    IEEE J. Sel. Topics Appl. Earth Observ. Remote Sens., vol. 6, no. 2, pp. 419-426, (2013).
  9. *Yokoya, N., Yairi, T., and Iwasaki, A.:
    "Coupled nonnegative matrix factorization unmixing for hyperspectral and multispectral data fusion"
    IEEE Trans. Geosci. Remote Sens., vol. 50, no. 2, pp. 528-537, (2012).

Contact information

Nihonbashi 1-chome Mitsui Building, 15th floor,
1-4-1 Nihonbashi,
Chuo-ku, Tokyo
103-0027, Japan

Email: naoto.yokoya [at] riken.jp

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