| 基于前视声纳的成像与多目标特征提取 |
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| 引用本文： | 吴丽媛,徐国华,余琨.基于前视声纳的成像与多目标特征提取[J].计算机工程与应用,2013,49(2):222-225. |
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| 作者姓名： | 吴丽媛 徐国华 余琨 |
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| 作者单位： | 华中科技大学 船舶与海洋工程学院，武汉 430074 |
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| 摘 要： | 针对水下目标图像的几何特性，提出了一种基于弦中点的改进Hough变换椭圆检测方法，实现了水下多目标的特征提取。单波束机械扫描前视声纳的图像数据为二维极坐标形式，采用波束内插方法和坐标变换方法生成图像，并对其进行图像预处理和轮廓跟踪，据此再进行多目标特征提取。通过水池实验结果表明，该方法对于水下多目标的特征描述更简明准确，为多目标识别与定位提供了有用信息。
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| 关 键 词： | 前视声纳 Hough变换 椭圆检测 多目标特征提取 图像预处理 轮廓跟踪 |
Image building and multi-objective features extraction based on forward-looking sonar |
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| WU Liyuan
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XU Guohua
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YU Kun.Image building and multi-objective features extraction based on forward-looking sonar[J].Computer Engineering and Applications,2013,49(2):222-225. |
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| Authors: | WU Liyuan XU Guohua YU Kun |
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| Affiliation: | School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | An advanced chord midpoint Hough transform ellipse detection method is proposed for geometric characteristics of underwater objective to extract feature of multi-objective.Using beam interpolating method and coordinate transform method for image data in two-dimension polar form received by sonar to generate image,it makes pre-processing and contour tracking,and extracts feature of multi-objective.The experimental results show that the method works well for multi-objective feature extraction,and provides useful information for multi-objective recognition and positioning. |
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| Keywords: | forward-looking sonar Hough transform ellipse detection multi-objective feature extraction image pre-processing contour tracking |
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