Enhancement of dim small target through modified top-hat transformation under the condition of heavy clutter

  • Authors:
  • Xiangzhi Bai;Fugen Zhou;Ting Jin

  • Affiliations:
  • Image Processing Center, Beijing University of Aeronautics and Astronautics, 100191 Beijing, China;Image Processing Center, Beijing University of Aeronautics and Astronautics, 100191 Beijing, China;Image Processing Center, Beijing University of Aeronautics and Astronautics, 100191 Beijing, China

  • Venue:
  • Signal Processing
  • Year:
  • 2010

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Abstract

A new algorithm to enhance dim small target through modified top-hat transformation is proposed in this paper. Firstly, the property of top-hat transformation is analyzed following the property of small target regions. Secondly, a judging value is calculated following the properties of target region and top-hat transformation. Finally, the judging value is imported into the top-hat transformation to form the modified top-hat transformation. Because of the judging value in modified top-hat transformation, dim target can be significantly enhanced and heavy clutter can be effectively suppressed. Experimental results verified that the modified top-hat transformation for target enhancement under the conditions of heavy clutter and dim target intensity was effective and robust.