摘要
在反向工程中 ,由实体获得 3D测量数据是关键的一步 ,不同与激光点扫描及移相等方法 ,本文要讨论的是一种基于图像识别和立体视觉 3D测量设备的算法 ,比较与其他方法 ,这种方法的精度有很大的改善 ,适用范围也十分广泛。本文说明了系统各参数的校正方法 ,说明了算法中光栅投影模块的逻辑序列问题 ,及相应的计算机识别过程 ,找到了影响投影图像数量的原因所在。并在此基础上对识别后的拟合曲线进行 3D数据的计算讨论 ,解决了取样及数值计算的算法问题。
The acquirement of 3D measurement data is key step in Reverse Engineering. Different with laser scanning and phase-shift measurement, a new method based on image recognition and stereovision is discussed. Compare with other methods, the method can have significantly improve the precision and can be widely applied in many fields. The emendation of system parameters, the logic sequence of projection image and correspondence recognized program are given. The effect factor of projected image is found. According to these, the 3D data calculation is discussed for recognized fitted curve, and the problem of sampling and numerical calculation method is solved. The practical experiment verifies the feasibility of the method.
出处
《模具技术》
2003年第2期48-51,共4页
Die and Mould Technology
关键词
3D测量
投影测量
反向工程
投影编码
立体视觉
3D-measurement
projection measurement
reverse engineering
projection code
stereovision
