Digital pure shear-strain moiré patterns
Abstract
A method for constructing digital shear-strain moirepatterns with pure shear-strain fringes is presented which is based on digital image processing techniques and moire carrier patterns of rotation. The proposed method is an extension of a digital pure secondary moire pattern method. The shear-strain moire pattern under consideration can give the shear-strain values over the whole field and the visible distribution of the shear-strain field. The pattern eliminates the backnoise of primary fringes and does not require high density of primary moire fringes, which can increase processing accuracy and efficiency.
- Publication:
-
Applied Optics
- Pub Date:
- April 1992
- DOI:
- 10.1364/AO.31.001813
- Bibcode:
- 1992ApOpt..31.1813Y
- Keywords:
-
- Diffraction Patterns;
- Digital Techniques;
- Image Processing;
- Moire Interferometry;
- Shear Strain;
- Gratings (Spectra);
- Moire Fringes;
- Pattern Recognition;
- Strain Distribution;
- Instrumentation and Photography;
- IMAGE PROCESSING