Attributes Estimation of Bridge with TerraSARX Imagery

Abstract:

An automatic method for detecting and interpreting bridges over water in TerraSARX imagery is proposed. Two kinds of image textures including the Gabor features and gray level co occurrence matrix statistics are employed to segment the image in multiple scales and obtain the regions of interest (ROIs) of bridge. Line segment detector is used to estimate the direction of bridge. For each ROI, five key parameters of a bridge are estimated based on the imaging model of radar, including angle, width, elevation over water and thickness of body. Experiment results with TerraSARX image indicate that the method is effective.