Title :
Analysis of fisheye photography for monitoring canopy structure during larch sawfly outbreak
Author :
Kubo, M. ; Gavrilov, S. ; Muramoto, K. ; Kamata, N.
Author_Institution :
Grad. Sch. of Natural Sci. & Technol., Kanazawa Univ., Kanazawa, Japan
Abstract :
During an outbreak of the larch sawfly in Hokkaido, Japan, it was demonstrated that hemispherical photography could detect defoliation, measured as changes in vegetation index (NDVI).
Keywords :
geophysical image processing; photogrammetry; vegetation mapping; Hokkaido; Japan; NDVI; canopy structure; defoliation; fisheye photography; hemispherical photography; larch sawfly outbreak; vegetation index; Educational institutions; Indexes; Meteorology; Monitoring; Photography; Vegetation; Vegetation mapping; NDVI; fisheye camera; hemispherical photography; larch sawfly; thresholding;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352713
