Sea ice thickness identification system and method suitable for ship ice area sailing test

Abstract

The invention belongs to the technical field of ship and ocean engineering, and relates to a sea ice thickness identification system suitable for ship ice area sailing test, in particular to an image acquisition device for a sea ice overturning process of a ship in an ice area sailing process and an automatic identification method for sea ice thickness parameters in an image. The image acquisition device comprises a black and white binocular camera, an infrared range finder, a graphic processor, a display screen and a data switch. According to the invention, the video image information of the sea ice cross section can be captured, the sea ice thickness parameter with the delay lower than 1 second and the precision reaching centimeter can be obtained, and the calibration problem of the sea ice image is solved.

Description

technical field [0001] The invention belongs to the technical field of ships and ocean engineering, and relates to a sea ice thickness recognition system suitable for ships sailing in ice areas, and in particular to an image acquisition device and an image acquisition device for the sea ice turning process of ships navigating in ice areas. A method for automatic identification of sea ice thickness parameters in images. Background technique [0002] Sea ice is the main environmental threat faced by ships in polar regions, and the ice load on the structure caused by sea ice seriously affects the safe operation of ships. Existing studies have shown that ice load has a significant positive correlation with sea ice thickness, so sea ice thickness measurement is one of the important parameters for predicting and measuring ice load. safety of navigation. [0003] The known documents include: Segmentation method of sea ice and seawater from synthetic aperture radar images CN202010...

AI Technical Summary

Problems solved by technology

[0004] First of all, the protection content of these patents is mainly the identification method of sea ice parameters, but does not describe the image acquisition equipment of sea ice and its installation method

Secondly, the synthetic aperture radar used in the patent “Segmentation Method of Sea Ice and Seawater in Synthetic Aperture Radar Images” is mainly based on electromagnetic radiation signals, and the recognition accuracy of sea ice is low and can only reach the meter level; the patent “Based on least squares The method and system for estimating the distribution of sea ice thickness due to poor quality is mainly aimed at satellite remote sensing images, and its identification accuracy is usually only at the kilometer level and the sampling frequency is low

In addition, the patent "An automatic measurement method of field ice thickness and ice velocity based on zoom image method", the literature "Sea ice parameter identification and statistical analysis based on digital image processing" and "Digital image technology and its The method described in "Application" is based on the static ocean platform rather than the hull structure. The differences in sea ice turnover caused by the different structural forms of ships and ocean platforms and the automatic calibration and automatic identification of sea ice thickness in image information are not considered.

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