In Ref.[1] we reported the V centers and hole-photostimulated luminescence(HPSL) of BaFCl crystal. The result shows that the V centers play an equal role asthe F centers in the X-ray storage and photostimulated lumine...In Ref.[1] we reported the V centers and hole-photostimulated luminescence(HPSL) of BaFCl crystal. The result shows that the V centers play an equal role asthe F centers in the X-ray storage and photostimulated luminescence (PSL) processes.Previous research work paid much attention to the F centers but neglected the Vcenters. So the X-ray storage and PSL processes have not been revealed completelyyet. Our research work is significant as a complement to the previous documents.展开更多
为了提高V型坡口焊缝特征提取算法的效率和准确性,对V型坡口光条图像预处理,在图像感兴趣区域(Region of Interest,ROI)开窗基础上构建差异化卷积模板,经图像差分后实现光条纹增强及噪声颗粒化.通过形态学开运算和小连通域去除提取出二...为了提高V型坡口焊缝特征提取算法的效率和准确性,对V型坡口光条图像预处理,在图像感兴趣区域(Region of Interest,ROI)开窗基础上构建差异化卷积模板,经图像差分后实现光条纹增强及噪声颗粒化.通过形态学开运算和小连通域去除提取出二值化光条,并采用几何中心法完成光条骨架细化.通过对光条形态学特征分析,初步定位角点,分区域提取光条中心线,最终获得焊缝的精确特征点.实验结果表明,采用该方法能够有效去除噪声,准确提取出亚像素级特征点,相较传统角点检测算法效率提升60%,满足工业应用的高精度和实时性要求.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘In Ref.[1] we reported the V centers and hole-photostimulated luminescence(HPSL) of BaFCl crystal. The result shows that the V centers play an equal role asthe F centers in the X-ray storage and photostimulated luminescence (PSL) processes.Previous research work paid much attention to the F centers but neglected the Vcenters. So the X-ray storage and PSL processes have not been revealed completelyyet. Our research work is significant as a complement to the previous documents.
文摘为了提高V型坡口焊缝特征提取算法的效率和准确性,对V型坡口光条图像预处理,在图像感兴趣区域(Region of Interest,ROI)开窗基础上构建差异化卷积模板,经图像差分后实现光条纹增强及噪声颗粒化.通过形态学开运算和小连通域去除提取出二值化光条,并采用几何中心法完成光条骨架细化.通过对光条形态学特征分析,初步定位角点,分区域提取光条中心线,最终获得焊缝的精确特征点.实验结果表明,采用该方法能够有效去除噪声,准确提取出亚像素级特征点,相较传统角点检测算法效率提升60%,满足工业应用的高精度和实时性要求.
