Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
851307 | Optik - International Journal for Light and Electron Optics | 2011 | 6 Pages |
Abstract
This communication presents the results of investigation undertaken towards testing the viability of wavelet filtering techniques in analyzing the Lau interferometric fringes. Towards this, the applicability of Haar, Daubechies and Symlet wavelet based filtering schemes have been tested. Of these schemes, the Symlet based filtering scheme gives the best results in terms of improved signal to noise ratio. This scheme is then used to analyze Lau interferograms recorded in the experimental arrangement for tilt angle measurement. The processed interferograms yield improved accuracy and precision of measurement.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Sumitra Singh, Santosh Rana, Shashi Prakash, Osami Sasaki,