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Title:
METHOD AND APPARATUS FOR CALCULATING AREA FOR SHIP ANCHORING
Document Type and Number:
WIPO Patent Application WO/2022/142384
Kind Code:
A1
Abstract:
The present invention relates to a method for calculating the area for ship anchoring, comprising the following steps: acquiring the ship trajectory of each ship within a certain time period in an anchoring region; screening out ship trajectories comprising an anchoring process, eliminating trajectory points in a non-anchoring state in the ship trajectories comprising the anchoring process, and acquiring anchoring trajectories of anchored ships; clustering anchor points in each anchoring trajectory, and using cluster centers as anchoring position points of corresponding ships; establishing an anchoring data set in view of the anchoring position point of each ship, selecting anchoring data records in the anchoring data set within a set time period, and constructing an anchoring position point set in a corresponding time period; and setting a corresponding Thiessen polygon for each anchoring position point in the anchoring position point set, calculating the area of each Thiessen polygon, and obtaining the anchoring area of a corresponding ship. The present invention provides a method for effectively calculating anchoring area, in which the calculation process is fast and the calculation results are dynamic and accurate.

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Inventors:
ZHOU CHUNHUI (CN)
ZHAO JUNNAN (CN)
LIU ZONGYANG (CN)
GAN LANGXIONG (CN)
XU YANMIN (CN)
Application Number:
PCT/CN2021/113468
Publication Date:
July 07, 2022
Filing Date:
August 19, 2021
Export Citation:
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Assignee:
UNIV WUHAN TECH (CN)
International Classes:
G06T7/62
Foreign References:
CN112686944A2021-04-20
CN111985529A2020-11-24
CN110069582A2019-07-30
CN110009937A2019-07-12
CN109708638A2019-05-03
US20200184828A12020-06-11
Attorney, Agent or Firm:
WUHAN ZHI JIA JOINT INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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