Phase triangulation method with statistical filtering for measurements under conditions of random additive noise and a limited dynamic range of a photodetector

S. V. Dvoynishnikov; Y. G. Meledin; I. K. Kabardin; V. V. Rakhmanov; V. O. Zuev

doi:10.32446/0368-1025it.2022-6-36-40

Phase triangulation method with statistical filtering for measurements under conditions of random additive noise and a limited dynamic range of a photodetector

S. V. Dvoynishnikov, Y. G. Meledin, I. K. Kabardin, V. V. Rakhmanov, V. O. Zuev

https://doi.org/10.32446/0368-1025it.2022-6-36-40

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Abstract

The application of optical methods for measuring the parameters of three-dimensional objects has been studied. Methods for decoding phase images under conditions of additive noise and a limited dynamic range of a photodetector are considered. The existing methods for decoding phase images introduce nonlinear distortions and systematic error into the measurement results under such conditions. A phase triangulation method with statistical data fitering is proposed for measuring the three-dimensional profie of an object under conditions of random additive noise and a limited dynamic range of a hotodetector, which excludes systematic distortions of the measurement results. The method is based on adaptive filtering and statistical analysisof the intensity distribution in the recorded phase images. The error of the method of decoding phase images using statistical data filtering and threshold fi ltering is analyzed analytically. The proposed method can be used to decode data in systems for measuring three-dimensional geometry that implement the phase triangulation method.

Keywords

3D-geometry, phase triangulation, dynamic range, statistical analysis

About the Authors

S. V. Dvoynishnikov

Kutateladze Institute of thermophysics SB RAS; Novosibirsk State University
Russian Federation

Sergey V. Dvoynishnikov

Novosibirsk

Y. G. Meledin

Kutateladze Institute of thermophysics SB RAS
Russian Federation

Vladimir G. Meledin

Novosibirsk

I. K. Kabardin

Kutateladze Institute of thermophysics SB RAS
Russian Federation

Ivan K. Kabardin

Novosibirsk

V. V. Rakhmanov

Kutateladze Institute of thermophysics SB RAS
Russian Federation

Vitaly V. Rakhmanov

Novosibirsk

V. O. Zuev

Kutateladze Institute of thermophysics SB RAS; Novosibirsk State University
Russian Federation

Vladislav O. Zuev

Novosibirsk

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For citations:

Dvoynishnikov S.V., Meledin Y.G., Kabardin I.K., Rakhmanov V.V., Zuev V.O. Phase triangulation method with statistical filtering for measurements under conditions of random additive noise and a limited dynamic range of a photodetector. Izmeritel`naya Tekhnika. 2022;(6):36-40. (In Russ.) https://doi.org/10.32446/0368-1025it.2022-6-36-40

ISSN 0368-1025 (Print)
ISSN 2949-5237 (Online)

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Izmeritel`naya Tekhnika

Phase triangulation method with statistical filtering for measurements under conditions of random additive noise and a limited dynamic range of a photodetector

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Abstract

Keywords

About the Authors

References

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