基于条纹投影的复杂物体体积测量装置
毕业论文关键词 三文测量 条纹投影 标定技术 线性标定
Title The Volume Measurement of Complex Objects Based on Fringe Projection
Abstract With the development of industry, topography measurement technology has been gradually concerned by people. In order to broaden the application of topography measurement by projecting fringe, this paper studied the volume measurement of complex objects which are based on fringe projection. This paper also discusses the principle of fringe projection shape measurement technology, and the depth research has been carried out into camera and projector calibration. The corner detection algorithm based on template matching is used and the linear calibration technology is applied to calibrating the interior and exterior parameters of camera and projector so that the back-projection error is smaller than one pixel. At the same time a simple volume calculation algorithm based on topographic data is proposed. Comparing with the volume obtained by drainage, the measurement error is less than 1%.
Keywords 3D measurement fringe projection calibration technology liner calibration
目次
1引言（或绪论）1
1.1课题的研究背景和意义1
1.2国内外研究概况、水平和发展趋势1
1.3本文所做的工作2
2基于条纹投影的复杂物体体积测量系统的理论分析3
2.1求解相位3
2.2相位解包4
2.3面形恢复6
2.4体积测量7
2.5本章小结9
3标定技术研究10
3.1摄像机标定10
3.1.1角点检测技术10
3.1.2标定坐标系研究13
3.1.3摄像机标定方法17
3.2投影仪标定20
3.3标定实验20
3.3.1摄像机标定实验20
3.3.2投影仪标定实验22
3.4本章小结23
4基于条纹投影的复杂物体体积测量系统24
4.1硬件系统的搭建24
4.2实验及数据处理25
4.3本章小结26
结论27
致谢28
参考文献29
附录A31
附录B33
附录C34
1 绪论
1.1 课题的研究背景及意义 随着现代制造业、工业的发展，在生产过程中往往需要对产品或零件进行大量的检测工作。其中，样件的三文形貌高精度测量显得极其重要，决定了产品性能的优劣以及质量的好坏。因此，三文形貌测量技术得到了越来越多行业的重视，随着图像处理技术，光电检测技术，计算机技术的发展与完善，三文形貌测量技术得到了极大的发展[1]。接触式测量和非接触式测量是物体形貌测量经常采用的方法。三文坐标测量设备和接触式轮廓仪[2]等都是较为传统的形貌测量方法。经过几十年的发展，其电子系统以及机械结构已经相当成熟，具有较高的可靠性以及准确性，但是由于其测量方式需要接触被测件从而损伤被测件表面导致该种方法的使用受到较大的限制。而基于条纹投影的非接触式光学三文形貌测量技术[1,3,4]能够实现无接触式测量，从而减少对被测物体的破坏，同时具有较高的灵敏度等优点而被广泛应用。