In this framework, an innovative welding system based on
a 3-axis motion device and a vision system has been
developed and implemented (Fig. 1). The vision system,
consisting of a video camera, a laser head and a band-pass
filter, allows to capture pictures of the weld joints. Image
processing algorithms have been developed to recognise the
desired features of the weld joint, such as geometry and
dimensions. This information is used for automatic decision
making concerning the selection of the most suitable welding
parameters for the specific welding task.