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Ship height measuring and calculating method and system

A ship and altitude technology, applied in the field of ship height measurement, can solve problems such as high computing power requirements, limited working distance, and unfavorable height measurement, and achieve the effect of improving the measurement efficiency and reducing the amount of calculation.

Active Publication Date: 2020-11-27
BEIJING UPHOTON OPTOELECTRONICS DEV CO LTD
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Problems solved by technology

Correspondingly, the existing ship height measurement technology is affected by the installation design and measurement principle of the device, the working distance is limited, and it cannot be moved flexibly, so the flexibility of use is insufficient
[0004] In addition, for the height measurement method based on the three-dimensional data of the ship, it is true that the highest point of the ship can be searched and the height of the ship can be calculated based entirely on the three-dimensional data, but this often requires high computing power of the system, and the calculation time is long, which is not conducive to rapid take height measurements

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  • Ship height measuring and calculating method and system
  • Ship height measuring and calculating method and system

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. For ease of description, only parts related to the invention are shown in the drawings.

[0048] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0049] figure 1 It is a schematic flow chart of the ship height measurement method 100 according to the embodiment of the present invention. Such as figure 1 As shown, the ship height measurement method 100 includes the following processing:

[0050] S110: Obtain a three-dimensional point cloud of a ship located on the wat...

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Abstract

The invention discloses a ship height measuring and calculating method. The method comprises the steps that three-dimensional point cloud of a ship located on the water surface is collected; projecting the three-dimensional point cloud to a target plane to obtain a corresponding two-dimensional point cloud, the target plane being parallel to the vertical direction; processing the two-dimensional point cloud in a target plane, and fitting to obtain a straight line representing the intersection position of the ship and the water surface, namely a ship body-water surface intersection line; and inthe target plane, calculating the longest distance between the two-dimensional point cloud and the ship body-water surface intersection line obtained by fitting, and taking the longest distance as the ship height. The invention further discloses a ship height measuring and calculating system. According to the embodiment of the invention, the ship height detection work can be carried out more flexibly, the calculation amount of height measurement and calculation is reduced, and the measurement and calculation efficiency is improved.

Description

technical field [0001] The present invention relates to a three-dimensional measurement technology, in particular to a ship height measurement method and system based on laser three-dimensional scanning technology. Background technique [0002] When a ship passes through a lock or bridge, in order to avoid collision accidents due to the height of the ship or the container it carries, it is necessary to measure the height of the ship by remote sensing. For this purpose, different ship height measurement techniques have been developed. For example, the ship height measurement technology based on image processing uses a camera to shoot a ship, and then obtains the ship height by processing the captured image. In addition, a ship height measurement technology based on laser 3D scanning has also been developed. For example, Chinese patent CN109178234A discloses a ship freeboard height measurement system, which uses a water level gauge and a laser radar installed under a bridge ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/62
CPCG06T2207/10028G06T2207/10044G06T7/62
Inventor 姜璐李沛林薛昭
Owner BEIJING UPHOTON OPTOELECTRONICS DEV CO LTD
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