Sea-sky line detection under complicated sea-sky background is very important for the detection and tracking of targets appeared near the area of sea-sky line. In this paper, different from traditional algorithms, we proposed a novel sea-sky line detection approach with Hough transform based on line segment detector. Firstly, an improved line segment detection method was used to locate the sea-sky region roughly. Then, the accurate position of sea-sky line is extracted with Hough transform. The experimental results indicate that the proposed method can effectively detect the sea-sky line under both simple and complicated sea-sky background, which is fast and robust for both ideal images and noise images.
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