Bolt positioning and looseness full-angle detection method based on color segmentation

• Main Authors: ZHAO TIANHAO, ZHANG LIJUN, YANG XIAOYU, ZHANG ZHENWEI, SUN YUANDONG, WANG RUOLAN, TIAN ZHAOYONG, KANG JINGJIE
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention relates to a bolt positioning and loosening full-angle detection method based on color segmentation, and belongs to the technical field of industrial fastener structure safety monitoring, and the method comprises the following steps: (1) installing a color difference gasket between a bolt and a base, (2) respectively marking anti-loosening lines used for measuring the loosening angle of the bolt on the surface of the bolt and the base, and (3) measuring the loosening angle of the bolt. (4) carrying out color segmentation and edge contour extraction on a chromatic aberration gasket; (5) carrying out perspective transformation; (6) carrying out open operation on a connection domain of a locking line to optimize the connection domain; (7) calculating a mass center and a direction by using geometric moment characteristics of a rotation locking line connection domain and a fixed locking line connection domain; and (9) calculating the looseness full angle of the bolt, and adopting a vector processing