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采用改进型傅氏变换轮廓(I FTP)术,提出了一种实用化的非接触式三维测量系统。通过计算机建模仿真,证明了该技术用于三维测量的可行性。采用了一种局部滤波的方法,通过滤波修正测量结果,使得测量精度明显提高。利用该系统对螺纹钢肋径进行实际测量,获得了良好的实验结果,经与实际值对比,并进行误差分析,验证了该系统具有实用价值和开发前景。
A modified non-contact three-dimensional measurement system was proposed by using improved Fourier transform profile (I FTP) technique. Through computer modeling and simulation, the feasibility of this technique for three-dimensional measurement is proved. A local filtering method is adopted, and the measurement results are corrected by filtering, so that the measurement accuracy is obviously improved. The system was used to measure the rebar rib real, and the good experimental results were obtained. Compared with the actual value and the error analysis, the system was verified to have practical value and development prospect.