Turncap centering and straight slot angle identification method based on machine vision

• Main Authors: YANG JUHUI, LI MINGFEI, LU CHAOWEI, LI WENHAO, XU DONGLAI, SUN GUOQIN
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2020
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

A turncap centering and straight slot angle identification method based on machine vision comprises the following steps: obtaining an image of a turncap of the type in advance, performing image processing to establish a template, enabling the focus center of the template image to be the center of the turncap, and building a template database; collecting a to-be-identified image of the turncap to be positioned; and matching with the template image after image processing is carried out; processing the matching result to obtain a plurality of screw cap circle center coordinates (X01, Y01), (X02,Y02),..; establishing a relative coordinate system according to the obtained turncap center, establishing a new template again, and storing the new template in a template database; establishing a straight line identification area under the relative coordinate system, and identifying a straight line of the straight line slot to obtain starting points and ending points of a plurality of straight lines; calculating the slope