Traditional detection methods of micro holes mainly aim at detecting single hole

and have a low lever of efficiency when applied in detecting multiple micro holes.A rapid detection system for multiple micro holes based on digital image processing technology is developed.The multiple micro holes are recognized through image skeleton extraction and pattern matching algorithm.The minimum zone method is used to obtain the diameter and the roundness of each hole

and the information of circle degree is employed to distinguish the shape of each hole.Experiments show that the system is provided with a fast detection speed and enough precision for meeting the production requirements

and suitable for rapid detection of multiple micro holes.