Comparison of synthetic exposure and sequential exposure for multiple exposure speckle imaging of blood flow

M. Chammas; C. H. Yu; H. Gurden; H. H. Lin; F. Pain

doi:10.1117/12.2615436

9 December 2021 Comparison of synthetic exposure and sequential exposure for multiple exposure speckle imaging of blood flow

M. Chammas, C. H. Yu, H. Gurden, H. H. Lin, F. Pain

Author Affiliations +

Proceedings Volume 11920, Diffuse Optical Spectroscopy and Imaging VIII; 1192022 (2021) https://doi.org/10.1117/12.2615436
Event: European Conferences on Biomedical Optics, 2021, Online Only

Abstract

We have compared multiple exposure speckle imaging using two approaches: (i) duration modulation of laser diode pulses with fixed exposure time and (ii) synthetic exposure created from the sum of frames obtained at 1ms exposure time. Both methods have been applied to evaluate controlled flows in micro-channels. The results demonstrate that the synthetic exposure method provides accurate speckle contrast data over a wide range of exposures, channel diameters and flows.

Citation Download Citation

M. Chammas, C. H. Yu, H. Gurden, H. H. Lin, and F. Pain "Comparison of synthetic exposure and sequential exposure for multiple exposure speckle imaging of blood flow", Proc. SPIE 11920, Diffuse Optical Spectroscopy and Imaging VIII, 1192022 (9 December 2021); https://doi.org/10.1117/12.2615436

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