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"Land Use and Land Cover Map" is the map describing what the land is covered and how it is used. This map is used in various fields, for example, for input data of climate change simulation, agliculture use, disaster prevention, etc. Combined with satelitte images and Machine Learning method, I try to create more accurate map.
To make a land cover map, we use many training data and validation data (called together as reference data). We need to gather a lot of reference data, but it takes a hight cost. To reduce it's cost, we are developing a multi-temporal and multi-points database for land cover study called "SACLAJ". My aim is to develop this databese in cooperatoin with citizens.
Land cover changes day by day. One purpose of creating Land Cover Map is to monitor such daily changing land cover. What is important at that time is to take photo land cover change at the same spot. To acheive that, we are developing rephotography application for Android.
Tsutsumida N., Nagai S., Rodríguez-Veiga P., Katagi J, Nasahara K. , Tadono T.. Mapping spatial accuracy of the forest type classification in JAXA’s high-resolution land use and land cover map, ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, accepted.
片木仁・奈佐原顕郎・小林健一郎・道津正徳・田殿武雄 (2018) : 多時期光学観測画像を用いた高解像度土地利用・土地被覆図における, 山影処理による誤分類の低減, 日本リモートセンシング学会誌, pp30-34. Vol. 38, No. 1.
Hoang T.T., Nasahara K.N., Katagi J. (2018) : Analysis of Land Cover Changes in Northern Vietnam Using High Resolution Remote Sensing Data. In: Tien Bui D., Ngoc Do A., Bui HB., Hoang ND. (eds) Advances and Applications in Geospatial Technology and Earth Resources. GTER 2017. Springer, Cham. Link
Takane, Y., H. Kondo, H. Kusaka, J. Katagi, O. Nagafuchi, K. Nakazawa, N. Kaneyasu, and Y. Miyakami. (2017): Foehn-like wind with a traditional foehn effect plus dry diabatic heating from the ground surface contribute to high temperatures at the end of a leeward area. Journal of Applied Meteorology and Climatology, DOI: http://dx.doi.org/10.1175/JAMC-D-16-0257.1.