A virtual channel construction and ship yaw detection method in a bridge anti-collision system
An anti-collision system and detection method technology are applied in the field of image processing to achieve the effect of ensuring traffic safety, people's life and property safety, and good adaptability
Active Publication Date: 2020-04-14
广州忘平信息科技有限公司
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Problems solved by technology
At present, there is no applicable virtual channel construction technology and ship deviation detection method based on virtual channel in this field.
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[0031] This embodiment discloses a virtual channel construction and ship yaw detection method in a bridge anti-collision system. All the steps in this embodiment are completed based on the Microsoft Visual Studio development environment and the opencv function library. The method specifically includes the following steps :
[0032] S1. Use Zhang Zhengyou’s checkerboard calibration method to calibrate the camera, convert the four end points of the virtual waterway on the given water surface from the world coordinate system to the image coordinate system, and determine the coordinates of the end points of the virtual waterway line;
[0033] S101. Using Zhang Zhengyou’s checkerboard calibration method, input 25 checkerboard photos taken from different angles in advance, calculate the camera’s internal parameter matrix, deformation parameters, translation vectors, and rotation vectors, and store them in an XML file for the next call;
[0034]S102. Install the camera above the navi...
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The invention discloses a virtual channel construction and ship yaw detection method in a bridge anti-collision system. The method collects image video information through a camera installed in a bridge navigation hole, and processes the collected video information. The virtual channel is displayed on the screen, and the distance from the ship to the virtual channel is calculated, so as to judge whether the ship is in danger of yaw and hit the pier. This method uses different methods to construct virtual waterways for different situations with and without aids to aids, and constructs different virtual waterways for different river topography, which has good adaptability. For structured rivers, straight-line virtual waterways can be constructed; for curved rivers, C-shaped and S-shaped virtual waterways can be constructed according to the actual terrain; for obstacles such as protruding banks and small / miniature islands in the waters, it can Build a virtual channel that adapts to the actual terrain, avoid obstacles, and ensure the safety of ships.
Description
technical field [0001] The invention relates to the technical fields of image processing and ship yaw detection, in particular to a virtual channel construction and ship yaw detection method in a bridge anti-collision system. Background technique [0002] With the continuous development of the transportation industry, a large number of bridges across the sea and across the river have been built. Most of the rivers and seas where this kind of bridge is located are busy waterways, and its currents, waves, wind and waves are complicated. The bridge inevitably bears a certain risk of ship collision. Therefore, it is important to study the early warning method of bridge collision avoidance. significance. [0003] There are two main methods of bridge anti-collision design: active anti-collision and passive anti-collision. Active anti-collision is a method to avoid ship collision accidents by intervening in the ship's navigation management and navigation trajectory; passive anti-...
Claims
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IPC IPC(8): G06K9/00G06T7/80G06T7/13G01C11/00G01C11/04
CPCG06T7/13G06T7/80G01C11/00G01C11/04G06V20/588Y02A90/30
Inventor 刘新东何信邵华平周曙张新征洪升耿
Owner 广州忘平信息科技有限公司