在三维形状测量中运用条纹投影解决相位-高度关系的混合方法

In 3D Shape Measurement Using the Mixture of Fringe Pattern in the Relationship Between Phase-Height Method

高度估算函数的提出是基于三维(3-D)测量系统中使用数字光处理(DLP)投影仪和一台照相机的几何分析,本研究所提出的3-D投影测量方法是一种结合了几何参数测定和最小二乘法的混合方法。此方法使用相位-高度关系相关参数对于一个线在平面中的分析和使用最小平方估算法的相关参数测定。该方法具有每幅图像行一个功能取代了每个图像像素一个功能。投影机的正选条纹图案被投射在物体上并由照相机图像来计算出测量点的相位,然后利用条纹图案的相位和测量点的高度之间的关系通过参数在水平平面坐标上表现出来。实验表明当x-z的工作范围为100 mm×50 mm时,该模型的误差在±0.1 mm之间。因此,该方法可以显著降低在3-D测量中使用投影仪和照相机之间几何关系的绘图函数的数量。

Height estimation function was proposed based on three-dimensional （3-D） measurement system used in digital light processing （DLP） projector and a camera geometric analysis, and this paper proposed a 3 - D projection measurement method which is a combination of geometric parameters and the hybrid method of least squares. This method used the phase-highly relations related parameters for a line in the plane analysis and using the least square estimation of the determination of related parameters. This method was that each image row a function to replace the function of each image pixel. The projector＇ s first-choice stripe pattern was projected on the object and the camera images to calculate the measurement point of phase and then used stripe pattern of the relationship between the phase and the height of the measurement point on the parameters in a horizontal plane coordinate. Experiments show that when the work scope of x - z for 100 mm × 50 mm, the error of the model is between ±0. 1 mm. Therefore, this method can significantly reduce the 3-d measuring projector and camera used in the geometrical relationship between the numbers of the drawing functions.