Patent ID: 11920912
Assignee: SHIP AND OCEAN INDUSTRIES R&DCENTER
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An automatic berthing image ranging system for vessels, comprising:
an image capturing device, configured on a vessel; wherein the image capturing device captures a reference image which comprises a first pattern and at least two second patterns; wherein the first pattern is disposed on the vessel and the at least two second patterns are disposed on a port; and
an electronic control unit, connected with the image capturing device; wherein the electronic control unit is configured for implementing an operating method of an automatic berthing image ranging system for vessels; wherein the operating method of the automatic berthing image ranging system for vessels comprises:
receiving the reference image form the image capturing device;
projecting the reference image onto a reference plane;
calculating a projection distance from the position of one second pattern in the at least two second patterns to another second pattern, at the reference plane;
dividing the projection distance by a predetermined distance to yield a corresponding calibration ratio;
calculating a reference distance between the first pattern and each of the second patterns respectively via the reference plane;
multiplying each of reference distances by the corresponding calibration ratio individually to yield a plurality of real distances; and
performing trigonometry calculations on the predetermined distance and the real distances, accordingly estimating a value of an acute angle between the vessel and the port;
wherein value of the predetermined distance is defined as a known distance;
wherein the known distance is defined as distance between any two of the at least two second patterns.