The study of detecting barrel eccentric hole based on machine vision technology

Positioning technology based on machine vision technology is proposed for poisonous liquid automatic filling machine barrels. Barrel image is collected by CCD sensor and processed with the image edge detection technology to separate the barrels image from background. Hough transform method is used to get the position of the hole of barrel in the pixel coordinate, after coordinate transform, the actual position is obtained in space coordinates. Finally, Stepping motor is droved by stepping drive system to located the actual position of the hole of barrel and achieve the automatic positioning.