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      Feature Fusion Based Road Extraction for HJ-1-C SAR Image

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          Abstract

          Road network extraction in SAR images is one of the key tasks of military and civilian technologies. To solve the issues of road extraction of HJ-1-C SAR images, a road extraction algorithm is proposed based on the integration of ratio and directional information. Due to the characteristic narrow dynamic range and low signal to noise ratio of HJ-1-C SAR images, a nonlinear quantization and an image filtering method based on a multi-scale autoregressive model are proposed here. A road extraction algorithm based on information fusion, which considers ratio and direction information, is also proposed. By processing Radon transformation, main road directions can be extracted. Cross interferences can be suppressed, and the road continuity can then be improved by the main direction alignment and secondary road extraction. The HJ-1-C SAR image acquired in Wuhan, China was used to evaluate the proposed method. The experimental results show good performance with correctness (80.5%) and quality (70.1%) when applied to a SAR image with complex content.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 June 2014
          : 3
          : 3
          : 352-360
          Affiliations
          [1 ] Institute of Electronics, Chinese Academy of Sciences
          Article
          23d62e404cfe4a20b6b65ae0ed5a9fcb
          10.3724/SP.J.1300.2013.13059

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

          Remote sensing, Electrical engineering

          Feature fusion, HJ-1-C, SAR, Road extraction, Radon transform

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