Building Corner Detection in Aerial Images with Fully Convolutional Networks
Citations Over TimeTop 12% of 2019 papers
Abstract
In aerial images, corner points can be detected to describe the structural information of buildings for city modeling, geo-localization, and so on. For this specific vision task, the existing generic corner detectors perform poorly, as they are incapable of distinguishing corner points on buildings from those on other objects such as trees and shadows. Recently, fully convolutional networks (FCNs) have been developed for semantic image segmentation that are able to recognize a designated kind of object through a training process with a manually labeled dataset. Motivated by this achievement, an FCN-based approach is proposed in the present work to detect building corners in aerial images. First, a DeepLab model comprised of improved FCNs and fully-connected conditional random fields (CRFs) is trained end-to-end for building region segmentation. The segmentation is then further improved by using a morphological opening operation to increase its accuracy. Corner points are finally detected on the contour curves of building regions by using a scale-space detector. Experimental results show that the proposed building corner detection approach achieves an F-measure of 0.83 in the test image set and outperforms a number of state-of-the-art corner detectors by a large margin.
Related Papers
- Chinese Named Entity Recognition with Conditional Random Fields(2006)
- → Gradual transition detection with conditional random fields(2007)7 cited
- → Result identification for biomedical abstracts using Conditional Random Fields(2008)6 cited
- Named entity recognition in Chinese medical records based on cascaded conditional random field(2014)
- → Biomedical Named Entity Recognition Using Second-Order Conditional Random Fields(2011)