Moire technique by means of digital image processing.
Moiré technique by means of projected fringes is a suitable method for full field measurements of out-of-plane deformations and object contouring. One disadvantage in industrial applications has been the photographic process with the involved time-consuming development of the photographic film. This paper presents a new method using a TV camera and a digital image processor whereby real-time measurements of deformations and comparison of object contours are possible. Also the principles and limitations of the projected moiré method are described.
Gasvik
K J
KJ
SINTEF, Division of Machine Design, University of Trondheim, N-7034 Trondheim-NTH, Norway.