A Learning-Based Resegmentation Method for Extraction of Buildings in Satellite Images

Dikmen M., HALICI U.

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, cilt.11, sa.12, ss.2150-2153, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 12
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1109/lgrs.2014.2321658
  • Dergi Adı: IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2150-2153
  • Anahtar Kelimeler: Building extraction, feature extraction, image classification, image segmentation, remote sensing, satellite images
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This letter introduces a new method for building extraction in satellite images. The algorithm first identifies the shadow segments on an oversegmented image, and then neighboring shadow segments, which are assumed to be cast by a single building, are merged. Next, candidate regions where buildings most likely occur are detected by using these shadow regions. Along with this information, closeness to shadows in illumination direction and spectral properties of segments are used to classify them as belonging to a "building" or not. Then, a resegmentation is performed by merging only the neighboring segments, which are classified as building. Finally, postprocessing is performed to eliminate some false building segments. The approach was tested on several Google Earth images, and the results are found to be promising.