Comparative study of the efficiency of noise-proof algorithms in improving the contrast of speckle interferograms registered by the time-average method
Year: 2024
Type: article
Abstract: A noise-proof algorithm for post-processing of video files recorded without isolation from vibration in the optical scheme of a digital speckle interferometer with a continuous laser and a diffuse-scattering element placed in front of the object is proposed. The results of the proposed algorithm are compared with the results of the known method for processing of a video stream in real time which is based on the sequential determination of residual images with their subsequent accumulation. The possibility of the contrast improvement by 19 – 48% compared to the basic method for the resulting speckle interferograms obtained by post-processing is shown. The developed algorithm was verified during a study of natural vibration modes of the vibrating blade of a gas turbine engine.
Source: Computer Optics
Author: A.V. Ivchenko
Institution: Samara National Research University
Language: English
Subfield: Computer Vision and Pattern Recognition
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
Funder: Russian Science Foundation
Award: G7706387967
OpenAlex ID: W4406678658