Vision detecting spray transfer pool and contour extraction

This article analyzes sensing method of arc welding pool. With respect to spray transfer pool, compound filters system composed of 405 nm or 1065 nm narrow-band filer are used, and respective pool images are obtained. Compared with each other, more clear pool image can be found through filter set composed of 1064 nm narrow-band. Characters of spray transfer pool are studied. Based on these characters,through computer image processing such as Gauss filter, gray stretch, border detection etc., a clear and sequential pool contour is acquired.