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Based on analyzing the situation of current underwater navigation, this paper presents an independent underwater navigation method, namely the terrain matching algorithm based on contour image. Firstly, according to multibeam bathymetric system data, the topographic contours are extracted out from the data and then form contour image. Secondly, the contour used for image matching is coded. The coding...
In the paper, a method based on the speeded up robust features (SURF) algorithm is presented for the seabed relief image matching navigation. By using of high-resolution features of the side-scan sonar image, the effective algorithm of image processing, SURF, is introduced to side-scan sonar seabed relief image processing for underwater navigation application. According to the characteristics of underwater...
Based on analyzing the traditional image matching algorithms, a fast image matching method, which integrates improved sequential similarity detection algorithm (SSDA) and wavelet transformation, is presented in this paper. Firstly, some basic principles of SSDA image matching and wavelet transformation are introduced. Secondly, according to the shortcoming of traditional SSDA algorithm, a new SSDA...
Seabed topographic match is a very important work for fulfilling the blend of different-source sounding data and the underwater positioning and navigation. Contour match is a classic method for the seabed topographic match. However, the traditional contour match algorithm will lead to obvious time consuming and mismatch, especially in the longer contour match. Thus, a kind of contour match algorithm...
This paper presents a new method to fulfill the contour match of seabed topography through image match algorithms. Firstly, the generation of topographic contour image is studied. Then, the theory of image matching is introduced. Based on above, a complete matching process is given out. Finally, a positioning experiment is implemented by means of contour image match. Positioning accuracy is better...
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