Method for identifying deflection polarity of rudder based on motion detection

Abstract

The invention discloses a method for identifying deflection polarity of a rudder based on motion detection. The method comprises the following steps of obtaining an undeflected static image of the rudder, applying a rotary rectangular mask to extract an interested area image of each rudder as a background frame of the rudder, and obtaining positive and negative deflection segmentation areas; applying a background eliminating method onto the dynamic image of each rudder according to the background frame of the rudder to obtain a motion image of each rudder, denoising and enhancing the motion image of each rudder, and obtaining the identifying image of each rudder; obtaining the average gray value of the identification image of each rudder in the positive and negative deflection segmentation areas; according to the single frame, identifying the average gray value of the positive and negative deflection segmentation areas and the multi-frame average gray value of the positive and negative deflection segmentation areas, so as to identify the deflection polarity of the rudder. The method for identifying the rudder deflection polarity has the advantages that the configuration is simple, the safety property is high, the method is effective, the identification efficiency is high, and the reliability is good.

Description

technical field [0001] The invention belongs to an image processing method, in particular to a method for identifying the deflection polarity of a rudder blade based on motion detection. Background technique [0002] With the advancement of science and technology, the field of equipment such as ships has developed rapidly. In the field of these devices, due to their high production costs and high risks, it is necessary to fully test their interfaces, performance and various functions before use to ensure the safety of the devices. During the test process, it is often necessary to identify the deflection polarity of the rudder blades. Due to the small size of the rudder blades, the fast deflection speed and the small deflection angle, manual identification is very difficult and dangerous. Therefore, there is an urgent need There is a machine vision-based automatic identification system with the characteristics of human-machine isolation and high efficiency to achieve the goa...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for identifying the deflection polarity of the rudder blade based on motion detection, which can solve the technical problems of low efficiency and high risk in judging the deflection polarity of the rudder blade by human eyes, and difficulty in distinguishing due to the small deflection angle. Simple, reliable, fast recognition

Images