摘要
时间相位解包裹是数字散斑干涉技术中新近发展的相位解包裹方法。不同于传统的空间相位解包裹法,时间相位解包裹从时间维度对相位进行解调,可以对非几何连续的表面进行测量,以确定绝对相位值。针对传统时间相位解包裹算法因逐点还原相位造成运算时间较长的问题,通过对解包裹算法的研究,提出一种基于选择还原法的时间相位解包裹算法。对少量的相位点进行还原的结果表明,该技术大幅度减少了相位解包裹运算时间,提高了测量速度。
Temporal phase unwrapping （TPU） is a recently developed phase unwrapping method in digital speckle pattern interferometry （ DSPI ）. Different from traditional spatial phase unwrapping （ SPU ） method, with TPU, the phase is demodulated from temporal dimension, so that the surface of non - geometric continuity can be measured to determine the absolute phase value. In traditional TPU algorithm, the phase is restored point by point, so longer operation time is taken, through researching the unwrapping algorithms, the TPU algorithm based on selective restoration method is proposed; only a small amount of phase points are restored, the operation time of phase wrapping can be greatly decreased, and the measurement speed of DSPI is increased.
出处
《自动化仪表》
CAS
2016年第7期34-36,共3页
Process Automation Instrumentation
基金
国家自然科学基金资助项目(编号:51275054)
北京市自然科学基金资助项目(编号:3144028)
关键词
光学测量
数字散斑干涉
解调
空间相位解包裹
时间相位解包裹
选择还原法
形变测量
振动测量
Optical measurement Digital speckle pattern interferometry Demodulation Spatial phase unwrapping Temporal phase unwrapping Selective restoration Deformation measurement Vibration measurement
