The Virtual Measurement Based on CT Image
-
摘要: 工业CT作为一种先进的无损检测手段,可以有效地检测零件的内外部结构情况,对扫描得到的工业CT图像进行二值化,将图像目标和背景分离,然后进行轮廓跟踪,识别出图像的外轮廓和内轮廓,并将内外轮廓数据拟合成样条曲线,最后进行虚拟测量。结果表明,该方法可以测量内外轮廓沿x,y方向以及任意方向的尺寸。Abstract: Industrial CT can effectively detect the parts in shape and appearance as an advanced nondestructive test method. A series of industrial CT images can be got after the part is scanned by industrial CT equipment. The industrial CT image is binary-coded, so the target and background are separated. Then the outer contour and inner contour are identified by contour tracking and the data of the outer contour and inner contour are fitted as spline curves. Finally, virtual measurements are used to get the dimensions of the outer contour and inner contour along the x direction, the y direction and the arbitrary direction.
-
Keywords:
- CT slice /
- virtual measurement /
- nondestructive testing /
- contour tracking
-
-
[1] ZHAO Yingliang, WANG Liming, HAN Yan. A 3-D industrial CT reconstruction algorithm to directly reconstruct the characteristics[J]. Nuclear Instruments and Methods in Physics Research A, 2011,626(2):20-24.
[2] CHIFFRE L D, CARMIGNATO S, KRUTH J P, et al. Industrial applications of computed tomography[J]. CIRP Annals, 2014,63(2), 655-677.
[3] 方黎勇,李柏林,李辉,等. 工业CT在反求工程上的应用[J].强激光与粒子束, 2013, 25(7):1620-1624. [4] 张莉,丛鹏. 工业CT反向工程测量涡轮叶片壁厚方法[J]. 核电子学与探测技术, 2015, 35(5):503-505. [5] 周京,徐滨士,王海斗.工业CT技术应用介绍及其在再制造中的展望[J]. 材料导报,2017, 27(z1):101-103. [6] 刘健庄,栗文青.灰度图像的二维Otsu自动阈值分割法[J].自动化学报,1993,19(1):101-105. [7] 倪麟,龚劬,曹莉,等.基于自适应加权中值滤波的二维Otsu图像分割算法[J].计算机应用研究,2013,30(2):598-600.
计量
- 文章访问数: 2
- HTML全文浏览量: 0
- PDF下载量: 1