导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2013, Vol. 34 ›› Issue (9): 2194-2201.doi: 10.7527/S1000-6893.2013.0309

• Electronics and Control • Previous Articles     Next Articles

Applied Research on Airborne SAR and Optical Image Registration Based on Control Line Method

LIU Zhongjie1,2, CAO Yunfeng3, ZHUANG Likui3, DING Meng4   

  1. 1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Air Force Military Representative Office in Jingchang District, Beijing 100041, China;
    3. Academy of Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    4. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2013-03-29 Revised:2013-06-17 Online:2013-09-25 Published:2013-06-20
  • Supported by:

    National Natural Science Foundation of China (61203170);Aeronautical Science Foundation of China (20110752005);Funding of Jiangsu Innovation Program for Graduate Education;Fundamental Research Funds for the Central Universities (CXLX12_0160);Special Foundation of China Postdoctoral Science (2013T60539)

Abstract:

According to the realistic needs of the unmanned aerial vehicle (UAV) scene matching navigation, image registration method is proposed, based on linear features of the airborne synthetic aperture radar (SAR) and optical images containing typical man-made objects. Firstly, improved line segment detection (LSD) method is proposed to extract linear features of the image; Secondly, we construct the control lines and design an image registration method. Finally, precise automatic image registration is achieved based on the affine transformation model. The experimental results show that the proposed method has high registration accuracy for the SAR image and optical image, which is different in intensive, rotation and translation. The computation time is substantially reduced, and it is possible to meet some of the real-time applications.

Key words: image registration, linear features, airborne SAR image, airborne optical image, affine transformation

CLC Number: