Target Aspect Estimation in SAR Imagery Based on Hough Transform and Major Axis Extraction
基于Hough变换与目标主轴提取的SAR图像目标方位角估计方法

A novel method of target aspect estimation in SAR imagery based on Hough transform and major axis extraction is proposed here,which fully exploits the information contained in the major axis of the target.Firstly,the accurate contour of the target in SAR imagery is extracted after the image segmentation based on Markov Random Field(MRF)model.Secondly,the straight lines on the contour are found by Hough transform and the major axis is extracted by the detection of feature points on the contour.Finally,a fine estimation can be acquired by the combination of estimation results from both Hough transform and major axis extraction.The validity of the method is indicated by experimental results with real SAR data sets.