Smart fringe image processing system

摘要

Optical methods equipped with phase measuring methods of fringe pattern analysis have become recently an important tool in non-destructive testing, remote shape measurement and strain analysis. However they are usually vulnerable to improper settings of operational parameters, algorithm selection, data evaluation sequence and often require highly qualified operator. These disadvantages may be reduced by implementing smart fringe image processing system, SFIPS, which is equipped in image quality evaluation modules and feed-back and feed-forward decision loops. The paper presents the architecture of SFIPS and the principles of formation and usage of image feature vectors at sequential stages of processing. Example of implementing the SFIPS for analysis of crossed fringe pattern obtained in grating interferometry system is given.