Target characteristic extraction method, identification method, extraction device and identification system for synthetic aperture sonar image
A technology of synthetic aperture sonar and target features, which is applied in the field of identification systems and can solve the problems of shadow information without considering the target, unfavorable synthetic aperture sonar image detection and identification, etc.
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[0056] The present invention will be described in detail below in conjunction with specific drawings and embodiments.
[0057] figure 1 Shown are the steps of image processing in the existing underwater imaging sonar recognition system, including: image preprocessing, image segmentation, feature extraction, classification and judgment. The embodiment provided by the present invention improves the feature extraction step.
[0058] In the embodiment of the present invention, object A is used to represent a buried object, object B is used to represent a cylindrical object, and object C is used to represent a natural object. figure 2 (a) is a synthetic aperture sonar image of a buried object; figure 2 (b) is the image after segmenting the synthetic aperture sonar image of the buried object by Markov random field; figure 2 (c) for figure 2 The buried objects in (a) target the same figure 2 (b) The fitting diagram of the edge of the segmentation result; image 3 (a) is a ...
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