激光与光电子学进展, 2020, 57 (22): 221013, 网络出版: 2020-11-12
基于线结构光的核燃料棒表面裂缝尺寸测量 
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Surface Crack Size Detection in Nuclear Fuel Rods Based on Line Structured Light
图 & 表
图 4. 感兴趣区域的定位框选。(a)原始图像;(b)框选效果图
Fig. 4. Position and frame selection for region of interest. (a) Original image; (b) diagram of frame selection effect
图 5. 燃料棒水平投影与一阶微分结果
Fig. 5. Horizontal projection and first-order differential results for fuel rods
图 6. 框选区域的扩大。(a) |im-is|≥6; (b)|im-is|<6
Fig. 6. Expansion of the frame selection area. (a) |im-is|≥6; (b)im-is|<6
图 9. 上边界判断方法。(a)边界像素点类型一;(b)边界像素点类型二;(c)边界像素点类型三;(d)边界像素点类型四
Fig. 9. Upper boundary judgment method. (a) Boundary pixel type one; (b) boundary pixel type two; (c) boundary pixel type three; (d) boundary pixel type four
图 11. 裂缝处结构光中心线的获取。(a)带有裂缝;(b)不带有裂缝;(c) (a)图去除裂缝区域;(d) (b)图去除裂缝区域;(e)正常光条中心;(f)残缺光条中心
Fig. 11. Acquisition of structured light bar center at the crack. (a) With a crack; (b) without cracks;(c) removing cracked area for Fig. 11 (a); (d) removing cracked area for Fig. 11 (b); (e) normal light bar center; (f) incomplete light bar center
图 13. 裂缝边界处理。(a)边界判定示意图;(b)中心线与边界相交示意图
Fig. 13. Crack boundary treatment. (a) Diagram of boundary decision; (b) intersection diagram of center line and boundary
图 17. 相机拍摄图片。(a)曝光度为200;(b)曝光度为300;(c)曝光度为400;(d)曝光度为500;(e)裂缝尺寸为190.0μm;(f)裂缝尺寸为181.6μm;(g)裂缝尺寸为 128.6μm
Fig. 17. Photos taken. (a) Exposure of 200; (b) exposure of 300; (c) exposure of 400; (d) exposure of 500; (e) crack size of 190.0μm; (f) crack size of 181.6μm; (g) crack size of 128.6μm
表 1中心线拟合误差表
Table1. Center line fitting errors
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表 2裂缝尺寸测量结果
Table2. Tabel 2 Test results of crack size
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咸凯强, 庞静珠, 胡俊. 基于线结构光的核燃料棒表面裂缝尺寸测量[J]. 激光与光电子学进展, 2020, 57(22): 221013. Kaiqiang Xian, Jingzhu Pang, Jun Hu. Surface Crack Size Detection in Nuclear Fuel Rods Based on Line Structured Light[J]. Laser & Optoelectronics Progress, 2020, 57(22): 221013.
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