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An average waterline detection method

A detection method and waterline technology, which can be applied to equipment for increasing the stability of ships, ships, and equipment for reducing ship motion, etc., can solve the problems of poor timeliness, high cost, and difficulty in ensuring the personal safety of staff, and achieve reduction in Random errors and human errors, the use of terminal resources, the effect of time-saving and smoother metering operations

Active Publication Date: 2017-04-26
ZHEJIANG OCEAN UNIV
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Problems solved by technology

This method not only has poor timeliness and high cost, but also it is difficult to guarantee the personal safety of the staff.

Method used

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  • An average waterline detection method

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Embodiment Construction

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0020] The embodiment of the present invention provides a water gauge detection method based on the fixed-point camera method, such as figure 1 , the method includes:

[0021] 101. The camera device arranged at a fixed point collects the water gauge video image of the ship.

[0022] In the embodiment of the present invention, the camera device is a camera, and the water gauge detection device is a palmtop computer.

[0023] The step 101 in the embodiment of the present invention can be specifically implemented as installing a fixed camera device at a fixed-point position on the wharf, the fixed-point position being the bow and stern positions of the ship to be detected on the wharf, and arranging wireless signals a...

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Abstract

The invention relates to an average waterline detecting method. The average waterline detecting method comprises the steps that a camera device arranged at the fixed point collects staff gauge video images of a ship; the camera device sends the collected staff gauge video images to an image signal receiver; the image signal receiver sends the received staff gauge images to a staff gauge detecting device; the staff gauge detecting device extracts a plurality of staff gauge images from the staff gauge video images, conducts channel binarization processing on HIS color space of the staff gauge images and conducts threshold processing on the binarized staff gauge images to obtain a plurality of sets of draft data; all the draft data at present are averaged, and then an average waterline of draft of the ship is obtained. By means of the method, the average waterline position of draft of the ship can be measured conveniently, quickly and accurately, personal errors are effectively avoided, and the limitation that checking weight by draft is limited by severe weather is greatly changed.

Description

technical field [0001] The invention relates to the technical field of water gauge measurement, in particular to an average water line detection method. Background technique [0002] In recent years, with the continuous development of shoreline resources in Zhoushan Port and the increasing dependence of domestic resource-based bulk bulk cargo on foreign countries, the import volume of bulk cargo has increased sharply. In 2011, 127 batches of iron ore were imported, totaling 4.51 million tons, with a value of USD 605.29 million; 157 batches of soybeans, totaling 2.45 million tons, with a value of USD 1,128.66 million; 79 batches of coal, totaling 5.45 million tons, with a value of USD 605.29 million. $580.73 million. In the context of the sharp rise in international raw material prices, the identification of entry-exit inspection and quarantine water gauges is also facing a trend of complexity and refinement. The most critical factor affecting measurement accuracy in water ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B39/12
Inventor 李博沈益骏王琦
Owner ZHEJIANG OCEAN UNIV
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