access icon openaccess Registration method for GIS vector road data and SAR image

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 20/02/2019, Accepted 03/05/2019, Published 30/05/2019

Road detection of synthetic aperture radar (SAR) image is an important part of SAR image interpretation. Thus, in the influence of sophisticated background and speckle noise, it is hard to directly extract the road information from the SAR image. So a SAR image registration method using existing geographic information system (GIS) road data is proposed to assist road detection for SAR image in this paper. By making full use of road geometry structure information, a road structure support is defined. Then all the positions in the SAR image are searched to find the biggest structure support as the optimum matching centre. The image registration for SAR image and road vector data is finally realised. Experimental results show that the registration accuracy of the proposed method is ∼2 pixels, which can be used for shoreline extraction, target positioning and so on.

Inspec keywords: image registration; radar imaging; geographic information systems; image segmentation; geophysical image processing; object detection; image resolution; roads; synthetic aperture radar; terrain mapping

Other keywords: shoreline extraction; GIS vector road data; SAR image registration method; road vector data; road detection; target positioning; road structure support; road geometry structure information; SAR image interpretation; optimum matching centre

Subjects: Radar equipment, systems and applications; Geophysical techniques and equipment; Geography and cartography computing; Computer vision and image processing techniques; Optical, image and video signal processing

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