The influence of the image noises on error of laser beam center determination

A. I. Imshenetskiy

doi:10.1117/12.610499

16 February 2005 The influence of the image noises on error of laser beam center determination

A. I. Imshenetskiy

Proceedings Volume 5447, Lasers for Measurements and Information Transfer 2004; 54470H (2005) https://doi.org/10.1117/12.610499
Event: Lasers for Measurements and Information Transfer 2004, 2004, St. Petersburg, Russian Federation

Abstract

The research of noise's influence in the digital image of a laser beam on the error of its center definition with the help of the program of image's processing Image Center is carried out. The given program is used for processing of flow's visualization pictures in computer-laser refractometrical method. The program allows to make an individual filtration of the entered image from noise and to find the center of images brightness. During researches the influence of multiplicate, additive noise; their sums; the size and a spatial site of the beam on an error of definition of its center was studied. For the analysis of noises influence on the results of work of the program a line of images with obviously known characteristics of noise and a site of the center of a stain was generated. Parameters of modeled images were maximal approached to experimentally received values. By results of researches the dependences of displacement of beams center position on a signal/noise ratio were constructed and analyzed, recommendations for realization of experiments are given and the data on threshold values of noise at which it is possible to find the center of the beam with the given error are received.

Citation Download Citation

A. I. Imshenetskiy "The influence of the image noises on error of laser beam center determination", Proc. SPIE 5447, Lasers for Measurements and Information Transfer 2004, 54470H (16 February 2005); https://doi.org/10.1117/12.610499

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