Line-Type Moving Object Detection for Sonar Images

This paper proposes a novel solution to process sonar images. It uses intensity Hough transformation to find out line-type moving objects in B-mode images of sonar. Considering that objects in sonar B-mode images always have enough values of intensity and are shown as local peaks, mathematical morphology is adopted to restrain noises, and extract the peaks. The intensity images are involved, which are different from the binary images used by standard Hough transformation. Intensity accumulation is performed in accumulation space. Line-type moving objects are discovered when the accumulation exceeds the preset threshold. The approach is suitable for a variety of underwater environments due to the independence on the model of reverberation. The experimental result illustrates the effectiveness and robustness of the novel solution.

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