B-splines is an easiest function which has compact support and is efficient to put into practice via software and hardware, so we use B-splines wavelet to detect welding seam edge.

• 基数B样条函数可以说是对于软件或硬件实现都是比较有效的具有小支撑的最简单的函数,文中采用B样条小波进行焊缝坡口边缘检测。