Image Enhancement of Laser Welding Molten Pool Feature in Frequency Domain
Molten pool image feature extraction is the key to judge welding quality.The commonly used method of spatial domain image processing is an operation for each pixel of an image,which is sensitive to noises.The frequency domain image processing could overcome the shortcomings of the spatial domain image process,it modifies the parameters within the image transform domain and operates the whole image,and then implements inverse transformation to get processed image.During the high-power fiber laser welding,in order to obtain effective and accurate molten pool keyhole image features,frequency domain image enhancement was used to remove noises and obtain the molten pool keyhole feature information.The experimental results showed that the image enhancement in the frequency domain was better than the spatial domain image processing in molten pool feature extraction.
molten pool keyhole frequency domain image enhancement
Ling MO Xiangdong GAO Deyong YOU
School of Electromechanical Engineering,Guangdong University of Technology,No.100 West Waihuan Road,Higher Education Mega Center,Panyu District,Guangzhou 510006,China
国际会议
沈阳
英文
1213-1216
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）