Next Article in Journal
Parameter Estimation Based on Sigmoid Transform in Wideband Bistatic MIMO Radar System under Impulsive Noise Environment
Previous Article in Journal
Target Localization via Integrated and Segregated Ranging Based on RSS and TOA Measurements
Article Menu
Issue 2 (January-2) cover image

Export Article

Open AccessArticle
Sensors 2019, 19(2), 231; https://doi.org/10.3390/s19020231

Automatic Extraction of Offshore Platforms in Single SAR Images Based on a Dual-Step-Modified Model

1,2,3
,
2
and
2,*
1
Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China
2
State Key Laboratory of Resources and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China
3
Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, 88 Anning Rd., Lanzhou 730070, China
*
Author to whom correspondence should be addressed.
Received: 12 December 2018 / Revised: 4 January 2019 / Accepted: 4 January 2019 / Published: 9 January 2019
(This article belongs to the Section Remote Sensors)
Full-Text   |   PDF [4964 KB, uploaded 10 January 2019]   |  

Abstract

The quantity and location of offshore platforms are of great significance for marine oil spill monitoring and offshore oil-gas development. In the past, multiphase medium- and low-resolution optical or radar images have been used to remove the interference of ship targets based on the static position of a platform to extract the offshore platform, resulting in large demands and high image data costs. According to the difference in shape between offshore platforms (not elongated) and ships (elongated shapes) in SAR (synthetic aperture radar) images, this paper proposes an automatic extraction method for offshore platforms in single SAR images based on a dual-step-modified model. First, the two-parameter CFAR (constant false alarm rate) algorithm was used to detect the possible offshore platform targets; then, the Hough transform was introduced to detect and eliminate ship targets with linear structures. Finally, the final offshore platform was obtained. Experiments were carried out in four study areas in the Beibu Gulf basin and the Pearl River estuary basin in the northern South China Sea. The results show that the method has a good extraction effect in the above research area, and the extraction accuracy rate of offshore platforms is 86.75%. A single SAR image can obtain satisfactory extraction results, which greatly saves on image data cost. View Full-Text
Keywords: dual-step-modified model; two-parameter CFAR detection; Hough transform; single SAR image; offshore platform dual-step-modified model; two-parameter CFAR detection; Hough transform; single SAR image; offshore platform
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhang, J.; Wang, Q.; Su, F. Automatic Extraction of Offshore Platforms in Single SAR Images Based on a Dual-Step-Modified Model. Sensors 2019, 19, 231.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top