Computer Engineering and Applications ›› 2013, Vol. 49 ›› Issue (2): 222-225.
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WU Liyuan, XU Guohua, YU Kun
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Published:
吴丽媛,徐国华,余 琨
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.
Key words: forward-looking sonar, Hough transform, ellipse detection, multi-objective feature extraction, image pre-processing, contour tracking
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。
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
WU Liyuan, XU Guohua, YU Kun. Image building and multi-objective features extraction based on forward-looking sonar[J]. Computer Engineering and Applications, 2013, 49(2): 222-225.
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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http://cea.ceaj.org/EN/Y2013/V49/I2/222