Counting Method for Wire Bars and Rods Based on Digital Image Processing
基于数字图像处理的棒线材计数方法

The automatic counting of wire bars and rods is an unsolved problem. To solve this problem, an image recognition approach which is based on the distance transform technique is presented in this paper. The profile images of wire bars and rods are captured by CCD cameras. In the image preprocessing the binary transform, erosion, dilation and open are conducted. The method of searching the seed spots in the distance transformed image is put forward, by which the numbers of wire bars and rods can be counted. The technique is verified by experiment that image are acquired in the factories. The counting results are not affected by the varieties and the profile shapes of wire bars and rods. This methodology is suitable for the image of wire bars and rods that are disorder and the pack are not trimness, so it is worthy of popularizing and applying.