复杂铸件的三维测量

针对复杂铸件尺寸大, 结构复杂, 槽、腔多, 测量时需兼顾测量效率和槽腔可测性的特点, 提出了一种大视场双目光栅测量子系统和小视场光栅测量子系统相结合的立体视觉测量方法。该方法使用前者测量复杂铸件的外部可测部分; 使用后者测量复杂铸件的槽腔等被遮挡部分。建立了两个测量子系统的数据拼接模型, 给出了数据拼接模型参数的定标方法。最后, 通过实验验证了该方法的可行性。实验结果表明: 该系统测量数据拼接的均方根误差(RMSE)为0.22 mm, 满足复杂铸件测量的精度要求。相比传统测量方法, 该方法兼顾了测量复杂铸件速度快和可以灵活测量槽腔等被遮挡部分的特点, 对工程应用具有实际指导意义。

Abstract

As complex castings are characterized by larger sizes, complex structures and so many sheltered cavities, it is difficult to measure with higher efficiency and better measurability. Therefore, this paper proposes a stereo vision method combined a large-field binocular measuring subsystem with a small-field grating measuring subsystem. The former was used to measure the outer of the complex castings and the latter was used to measure the cavities of the complex castings. A data registration model for the two subsystems was established and also a method to calibrate the model parameters was proposed. The proposed method was validated by experimental tests. It is proved that the proposed method is suitable for measuring complex castings and the data registration Root Mean Square Error(RMSE) is 0.22 mm. Compared with traditional methods, this method has higher measuring velocity and can measure the complex castings with sheltered cavities. In conclusion, the research has great significance in applications.

参考文献

[1] SANSONI G, REBES CHI M T, DOCCHIO F. State-of-the-art and applications of 3D imaging sensors in in dustry, cultural heritage, medicine, and criminal in vestigation ［J］. Sensors, 2009, 9 (1): 568-601.

[2] ATOS compact scan-the compact class of scanning ［EB/OL］.［2013-09-01］.http: //www.gom.com/metrology-systems/system-overview/atos-compact-scan.html.

[3] Optical CMM scanners: metraSCAN 3D［EB/OL］.［2013-09-01］.http: //www.creaform3d.com/en/metrascan/default.aspx

[4] 魏振忠,高明,张广军. 光笔视觉三维测量中光斑图像点立体匹配方法［J］.光电工程,2009,36(8): 46-49.

WEI ZH ZH,GAO M,ZHANG G J. Stereo matching of light-spot image points in light-probe 3D vision measurement［J］.Opto-Electronic Engineering, 2009, 36(8): 46-49. (in Chinese)

[5] 黄凤山. 光笔式单摄像机三维坐标视觉测量系统关键技术研究［D］.天津: 天津大学,2005: 1-10.

HUANG F SH. Key Technologies of Single Camera Based Light-probe 3D Coordinates Vision Measurement System ［D］. Tianjin: Tianjin University,2005: 1-10. (in Chinese)

[6] 解则晓, 韩振华, 高翔. 光笔式单目视觉测量系统的关键技术［J］. 中国光学, 2013,6(5): 780-787.

XIE Z X, HAN ZH H, GAO X. Key technologies of monocular vision measurement system with light pen［J］.Chinese Optics, 2013,6(5): 780-787.

[7] BARONE S, PAOLIN A, RAZIONALE A V. Shape measurement by a multi-view methodology based on the remote tracking of a 3D optical scan-ner［J］. Opt. Lasers Eng., 2012,48(2): 380-390.

[8] CALLIERI M,FASANO A,IMPOCO G,et al.. Robosca: an automatic system for accurate and unattended 3D scanning［J］. Proc. 3DPVT’04, 2004: 805-812 .

[9] 刘建伟,梁晋,梁新合,等. 大尺寸工业视觉测量系统［J］.光学精密工程,2010,18(1): 126-134.

LIU J W,LIANG J,LIANG X H, et al.. Industrial vision measuring system for large dimension work-pieces［J］. Opt. Precision Eng., 2010,18(1): 126-134. (in Chinese)

[10] 姜宏志,赵慧洁,梁宵月,等. 基于极线校正的快速相位立体匹配方法［J］.光学精密工程, 2011,19(10): 2520-2025.

JIANG H ZH, ZHAO H J,LIANG X Y, et al.. Phase-based stereo matching using epipolar line rectification［J］. Opt. Precision Eng., 2011,19(10): 2520-2025. (in Chinese)

[11] 姜宏志,赵慧洁,李旭东,等. 用于强反射表面形貌测量的投影栅相位法［J］.光学精密工程,2010,18(9): 2002-2008.

JIANG H ZH, ZHAO H J,LI X D, et al..Projected fringe profilometry for profile measurement of high reflective surface［J］. Opt. Precision Eng., 2010,18(9): 2002-2008. (in Chinese)

[12] 雷彦章,赵慧洁,姜宏志. 一种单双目结合的三维测量方法［J］.光学学报, 2008, 28(7): 1338-1342.

LEI Y ZH,ZHAO H J,JIANG H ZH. A three dimensional measurement method by combining binocular and monocular vision systems［J］. Acta Optica Sinica, 2008, 28(7): 1338-1342. (in Chinese)

[13] EGGERT DW, LORUSSO A, FISCHER R B. Estimating 3-D rigid body transformations: a comparison of four major algorithms［J］. Mach. Vis. Appl., 1997(9): 272-290.

李旭东, 孙健, 姜宏志, 赵慧洁, 冯伟庆, 鞠长滨. 复杂铸件的三维测量[J]. 光学精密工程, 2014, 22(4): 884. LI Xu-dong, SUN Jian, JIANG Hong-zhi, ZHAO Hui-jie, FENG Wei-qing, J Chang-bin. 3D measurement for complex castings[J]. Optics and Precision Engineering, 2014, 22(4): 884.

复杂铸件的三维测量

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