Color Based Image Processing Techniques to Detect Oxide Film during Welding

From naval to aerospace and industry to household, everywhere the necessity of aluminum is felt. But oxide film can be formed on this metal and its alloys during casting or welding due to high affinity of aluminum for oxygen. This phenomenon can further lead to porosity which is a vital defect. Visual inspection is not sufficient due to different human constraints. So, many image processing techniques have been developed. For better welding, we propose here two useful and efficient techniques. Unlike most of the previous techniques, our proposed techniques are color based processing. In this manuscript, our main goal is to detect oxide film and we show that the task is successfully done by our methods.