In response to the key step of obtaining the gear center coordinates in current gear parameter measurement and detec-tion based on machine vision,which lacks versatility,a method based on Hough involute transform was proposed.First,a mathe-matical model of gear involute tooth profile was established in image coordinates.Then performing convolution and edge detection to obtain the gear edge image and the pixel gradient angle.Finally,the gear center coordinate was found by performing Houghin-volute transform on the edge pixel.Simulation and experiment results show that the standard deviation of the real coordinates and the method's is within 1 pixel,and there is no requirement for the shape of the gear inner hole.It can be used as an effective meth-od for gear center detection.
维普
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