基于TerraSARX影像的桥梁属性估计方法

Attributes Estimation of Bridge with TerraSARX Imagery

摘要:

提出了一种基于TerraSARX影像的桥梁提取和参数计算方法.首先使用Gaobor纹理、共生矩阵纹理和多分辨率影像分割获取桥梁的兴趣区，基于快速直线段检测算子（LSD）检测桥梁的方向，最后利用雷达成像参数和多次回波模型计算桥梁的方向、宽度、水面高度、桥体厚度.试验结果表明了该方法的有效性.

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.