@proceedings{bibcite_17,
  keywords = {ALOS PALSAR urban extent map high resolution},
  author = {Koichiro Itabashi and Hiroyuki Miyazaki and Koki Iwao and Kazuki Nakamura and Ryosuke Shibasaki},
  title = {A method for detecting and mapping Urban Area by ALOS/PALSAR data},
  abstract = {Currently, global urban extent map of high accuracy and resolution have been constructed mainly using optical sensor including ASTER/VNIR. However, there are some regions where urban area is not detected because of cloud cover and similar reflectance among land cover classes. In the present work, by using ALOS/PALSAR, a microwave sensor, we proposed a method for detecting urban area which cannot be detected by ASTER/VNIR optical sensor and developing urban extent map in high accuracy and resolution. We mainly used satellite images taken by Fine Resolution Mode of ALOS/PALSAR. Local-incident-angle corrected images by Fine Resolution Mode were used for this method. The proposed method consists of sampling pixel values and ground truth data at urban and non-urban area from ALOS/PALSAR images; constructing classifier based on the pixel values and ground truth data; and classifying pixels into urban or non-urban area. We compared the results with urban extent map derived from ASTER/VNIR optical sensor images, and evaluated the possibility of using ALOS/PALSAR data for developing urban extent map. In addition, we examined accuracy improvement of detecting urban area using both ASTER/VNIR and ALOS/PALSAR images. The proposed method could classify regions which were misclassified by ASTER/VNIR optical sensor images, and develop urban extent map in high accuracy and resolution.},
  year = {2010},
  journal = {31st Asian Conference on Remote Sensing},
  month = {2010},
  address = {Hanoi, Vietnam},
  language = {eng},
}