Object-based 3D building change detection using point-level change indicators

Luqi Zhang, Zhihua Zhang, Jiuyan Zhang, Xin Qiao, Zhenchao Zhang, Bisheng Yang, Zhen Dong

Abstract: Highlights•Point-level change indicators are calculated for object-based building change detection.•Slice-voxels are ultilized for building object extraction, overcoming the uneven distribution and sparsity of the point cloud.•A supervised change type determination method is proposed to detect multi-class change types.•The efficiency of the proposed method is validated both on a simulated dataset and a real airborne laser scanning (ALS) dataset.